greybus-dev

greybus-dev@lists.linaro.org

16 participants
819 discussions

[FIRST-PATCH] staging : greybus : gb-beagleplay.c : fixing the checks as first-patch

by rujra

added comments on spinlocks for producer-consumer model, rearranged the lines on function calls where it should not end with "(" this bracket, also removed white-spaces and aligned the arguments of function calls. Signed-off-by: Rujra Bhatt <braker.noob.kernel(a)gmail.com> >8------------------------------------------------------8< drivers/greybus/gb-beagleplay.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/greybus/gb-beagleplay.c b/drivers/greybus/gb-beagleplay.c index 473ac3f2d382..fa1c3a40dd0b 100644 --- a/drivers/greybus/gb-beagleplay.c +++ b/drivers/greybus/gb-beagleplay.c @@ -73,7 +73,9 @@ struct gb_beagleplay { struct gb_host_device *gb_hd; struct work_struct tx_work; + //used to ensure that only one producer can access the shared resource at a time. spinlock_t tx_producer_lock; + //used to ensure that only one consumer can access the shared resource at a time. spinlock_t tx_consumer_lock; struct circ_buf tx_circ_buf; u16 tx_crc; @@ -642,8 +644,8 @@ static int cc1352_bootloader_wait_for_ack(struct gb_beagleplay *bg) { int ret; - ret = wait_for_completion_timeout( - &bg->fwl_ack_com, msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); + ret = wait_for_completion_timeout(&bg->fwl_ack_com, + msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); if (ret < 0) return dev_err_probe(&bg->sd->dev, ret, "Failed to acquire ack semaphore"); @@ -680,9 +682,8 @@ static int cc1352_bootloader_get_status(struct gb_beagleplay *bg) if (ret < 0) return ret; - ret = wait_for_completion_timeout( - &bg->fwl_cmd_response_com, - msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); + ret = wait_for_completion_timeout(&bg->fwl_cmd_response_com, + msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); if (ret < 0) return dev_err_probe(&bg->sd->dev, ret, "Failed to acquire last status semaphore"); @@ -765,9 +766,8 @@ static int cc1352_bootloader_crc32(struct gb_beagleplay *bg, u32 *crc32) if (ret < 0) return ret; - ret = wait_for_completion_timeout( - &bg->fwl_cmd_response_com, - msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); + ret = wait_for_completion_timeout(&bg->fwl_cmd_response_com, + msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); if (ret < 0) return dev_err_probe(&bg->sd->dev, ret, "Failed to acquire last status semaphore"); -- 2.43.0

1 year, 3 months

[PATCH] staging: greybus: Reformat code in gb_operation_sync_timeout()

by Thorsten Blum

Remove any unnecessary curly braces and combine 'else' and 'if' to an 'else if' to improve the code's readability and reduce indentation. Signed-off-by: Thorsten Blum <thorsten.blum(a)linux.dev> --- drivers/greybus/operation.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/greybus/operation.c b/drivers/greybus/operation.c index 8459e9bc0749..ba26504ccac3 100644 --- a/drivers/greybus/operation.c +++ b/drivers/greybus/operation.c @@ -1157,16 +1157,12 @@ int gb_operation_sync_timeout(struct gb_connection *connection, int type, memcpy(operation->request->payload, request, request_size); ret = gb_operation_request_send_sync_timeout(operation, timeout); - if (ret) { + if (ret) dev_err(&connection->hd->dev, "%s: synchronous operation id 0x%04x of type 0x%02x failed: %d\n", connection->name, operation->id, type, ret); - } else { - if (response_size) { - memcpy(response, operation->response->payload, - response_size); - } - } + else if (response_size) + memcpy(response, operation->response->payload, response_size); gb_operation_put(operation); -- 2.49.0

1 year, 3 months

[PATCH] staging: greybus: use new GPIO line value setter callbacks

by Bartosz Golaszewski

From: Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> --- drivers/staging/greybus/gpio.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c index 16bcf7fc8158..f81c34160f72 100644 --- a/drivers/staging/greybus/gpio.c +++ b/drivers/staging/greybus/gpio.c @@ -185,8 +185,8 @@ static int gb_gpio_get_value_operation(struct gb_gpio_controller *ggc, return 0; } -static void gb_gpio_set_value_operation(struct gb_gpio_controller *ggc, - u8 which, bool value_high) +static int gb_gpio_set_value_operation(struct gb_gpio_controller *ggc, + u8 which, bool value_high) { struct device *dev = &ggc->gbphy_dev->dev; struct gb_gpio_set_value_request request; @@ -195,7 +195,7 @@ static void gb_gpio_set_value_operation(struct gb_gpio_controller *ggc, if (ggc->lines[which].direction == 1) { dev_warn(dev, "refusing to set value of input gpio %u\n", which); - return; + return -EPERM; } request.which = which; @@ -204,10 +204,12 @@ static void gb_gpio_set_value_operation(struct gb_gpio_controller *ggc, &request, sizeof(request), NULL, 0); if (ret) { dev_err(dev, "failed to set value of gpio %u\n", which); - return; + return ret; } ggc->lines[which].value = request.value; + + return 0; } static int gb_gpio_set_debounce_operation(struct gb_gpio_controller *ggc, @@ -457,11 +459,11 @@ static int gb_gpio_get(struct gpio_chip *chip, unsigned int offset) return ggc->lines[which].value; } -static void gb_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) +static int gb_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) { struct gb_gpio_controller *ggc = gpiochip_get_data(chip); - gb_gpio_set_value_operation(ggc, (u8)offset, !!value); + return gb_gpio_set_value_operation(ggc, (u8)offset, !!value); } static int gb_gpio_set_config(struct gpio_chip *chip, unsigned int offset, @@ -555,7 +557,7 @@ static int gb_gpio_probe(struct gbphy_device *gbphy_dev, gpio->direction_input = gb_gpio_direction_input; gpio->direction_output = gb_gpio_direction_output; gpio->get = gb_gpio_get; - gpio->set = gb_gpio_set; + gpio->set_rv = gb_gpio_set; gpio->set_config = gb_gpio_set_config; gpio->base = -1; /* Allocate base dynamically */ gpio->ngpio = ggc->line_max + 1; --- base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8 change-id: 20250331-gpiochip-set-rv-greybus-cd2365755186 Best regards, -- Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org>

1 year, 3 months

[PATCH v2] staging: greybus: Check for string truncation instead of NUL-termination

by Thorsten Blum

Commit 18f44de63f88 ("staging: greybus: change strncpy() to strscpy_pad()") didn't remove the now unnecessary NUL-termination checks. Unlike strncpy(), strscpy_pad() guarantees that the destination buffer is NUL-terminated, making these checks obsolete. Remove them and check for string truncation instead. Compile-tested only. Signed-off-by: Thorsten Blum <thorsten.blum(a)linux.dev> --- Changes in v2: - Check the return value of strscpy_pad() for string truncation instead of NUL-termination as suggested by Alex Elder - Link to v1: https://lore.kernel.org/r/20250331183935.1880097-2-thorsten.blum@linux.dev/ --- drivers/staging/greybus/fw-management.c | 48 +++++++++---------------- 1 file changed, 17 insertions(+), 31 deletions(-) diff --git a/drivers/staging/greybus/fw-management.c b/drivers/staging/greybus/fw-management.c index a47385175582..152949c23d65 100644 --- a/drivers/staging/greybus/fw-management.c +++ b/drivers/staging/greybus/fw-management.c @@ -123,17 +123,11 @@ static int fw_mgmt_interface_fw_version_operation(struct fw_mgmt *fw_mgmt, fw_info->major = le16_to_cpu(response.major); fw_info->minor = le16_to_cpu(response.minor); - strscpy_pad(fw_info->firmware_tag, response.firmware_tag); - - /* - * The firmware-tag should be NULL terminated, otherwise throw error but - * don't fail. - */ - if (fw_info->firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] != '\0') { + ret = strscpy_pad(fw_info->firmware_tag, response.firmware_tag); + if (ret == -E2BIG) dev_err(fw_mgmt->parent, - "fw-version: firmware-tag is not NULL terminated\n"); - fw_info->firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] = '\0'; - } + "fw-version: truncated firmware tag: %s\n", + fw_info->firmware_tag); return 0; } @@ -152,14 +146,12 @@ static int fw_mgmt_load_and_validate_operation(struct fw_mgmt *fw_mgmt, } request.load_method = load_method; - strscpy_pad(request.firmware_tag, tag); - /* - * The firmware-tag should be NULL terminated, otherwise throw error and - * fail. - */ - if (request.firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] != '\0') { - dev_err(fw_mgmt->parent, "load-and-validate: firmware-tag is not NULL terminated\n"); + ret = strscpy_pad(request.firmware_tag, tag); + if (ret == -E2BIG) { + dev_err(fw_mgmt->parent, + "load-and-validate: truncated firmware tag: %s\n", + request.firmware_tag); return -EINVAL; } @@ -248,14 +240,11 @@ static int fw_mgmt_backend_fw_version_operation(struct fw_mgmt *fw_mgmt, struct gb_fw_mgmt_backend_fw_version_response response; int ret; - strscpy_pad(request.firmware_tag, fw_info->firmware_tag); - - /* - * The firmware-tag should be NULL terminated, otherwise throw error and - * fail. - */ - if (request.firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] != '\0') { - dev_err(fw_mgmt->parent, "backend-version: firmware-tag is not NULL terminated\n"); + ret = strscpy_pad(request.firmware_tag, fw_info->firmware_tag); + if (ret == -E2BIG) { + dev_err(fw_mgmt->parent, + "backend-fw-version: truncated firmware tag: %s\n", + request.firmware_tag); return -EINVAL; } @@ -302,13 +291,10 @@ static int fw_mgmt_backend_fw_update_operation(struct fw_mgmt *fw_mgmt, int ret; ret = strscpy_pad(request.firmware_tag, tag); - - /* - * The firmware-tag should be NULL terminated, otherwise throw error and - * fail. - */ if (ret == -E2BIG) { - dev_err(fw_mgmt->parent, "backend-update: firmware-tag is not NULL terminated\n"); + dev_err(fw_mgmt->parent, + "backend-fw-update: truncated firmware tag: %s\n", + request.firmware_tag); return -EINVAL; } -- 2.49.0

1 year, 3 months

[PATCH] staging: greybus: Remove unnecessary NUL-termination checks

by Thorsten Blum

Commit 18f44de63f88 ("staging: greybus: change strncpy() to strscpy_pad()") didn't remove the now unnecessary NUL-termination checks. Unlike strncpy(), strscpy_pad() guarantees that the destination buffer is NUL-terminated, making the checks obsolete. Remove them. Signed-off-by: Thorsten Blum <thorsten.blum(a)linux.dev> --- drivers/staging/greybus/fw-management.c | 39 +------------------------ 1 file changed, 1 insertion(+), 38 deletions(-) diff --git a/drivers/staging/greybus/fw-management.c b/drivers/staging/greybus/fw-management.c index a47385175582..852c0830261f 100644 --- a/drivers/staging/greybus/fw-management.c +++ b/drivers/staging/greybus/fw-management.c @@ -125,16 +125,6 @@ static int fw_mgmt_interface_fw_version_operation(struct fw_mgmt *fw_mgmt, strscpy_pad(fw_info->firmware_tag, response.firmware_tag); - /* - * The firmware-tag should be NULL terminated, otherwise throw error but - * don't fail. - */ - if (fw_info->firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] != '\0') { - dev_err(fw_mgmt->parent, - "fw-version: firmware-tag is not NULL terminated\n"); - fw_info->firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] = '\0'; - } - return 0; } @@ -154,15 +144,6 @@ static int fw_mgmt_load_and_validate_operation(struct fw_mgmt *fw_mgmt, request.load_method = load_method; strscpy_pad(request.firmware_tag, tag); - /* - * The firmware-tag should be NULL terminated, otherwise throw error and - * fail. - */ - if (request.firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] != '\0') { - dev_err(fw_mgmt->parent, "load-and-validate: firmware-tag is not NULL terminated\n"); - return -EINVAL; - } - /* Allocate ids from 1 to 255 (u8-max), 0 is an invalid id */ ret = ida_alloc_range(&fw_mgmt->id_map, 1, 255, GFP_KERNEL); if (ret < 0) { @@ -250,15 +231,6 @@ static int fw_mgmt_backend_fw_version_operation(struct fw_mgmt *fw_mgmt, strscpy_pad(request.firmware_tag, fw_info->firmware_tag); - /* - * The firmware-tag should be NULL terminated, otherwise throw error and - * fail. - */ - if (request.firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE - 1] != '\0') { - dev_err(fw_mgmt->parent, "backend-version: firmware-tag is not NULL terminated\n"); - return -EINVAL; - } - ret = gb_operation_sync(connection, GB_FW_MGMT_TYPE_BACKEND_FW_VERSION, &request, sizeof(request), &response, sizeof(response)); @@ -301,16 +273,7 @@ static int fw_mgmt_backend_fw_update_operation(struct fw_mgmt *fw_mgmt, struct gb_fw_mgmt_backend_fw_update_request request; int ret; - ret = strscpy_pad(request.firmware_tag, tag); - - /* - * The firmware-tag should be NULL terminated, otherwise throw error and - * fail. - */ - if (ret == -E2BIG) { - dev_err(fw_mgmt->parent, "backend-update: firmware-tag is not NULL terminated\n"); - return -EINVAL; - } + strscpy_pad(request.firmware_tag, tag); /* Allocate ids from 1 to 255 (u8-max), 0 is an invalid id */ ret = ida_alloc_range(&fw_mgmt->id_map, 1, 255, GFP_KERNEL);

1 year, 3 months

[PATCH] staging: greybus: Multiple cleanups and refactors

by gpittala

This patch includes multiple meaningful cleanups for the Greybus staging driver: 1. firmware.c: Replaced deprecated 'strncpy()' with 'strscpy()' 2. sysfs show functions: Replaced 'sprintf()' with 'sysfs_emit()' 3. loopback.c: Refactored a large function (gp_loopback_fn) to improve readability 4. audio_gb.c: Split logic in get_topology() into separate calls as per TODO All changes are tested and pass checkpatch.pl Signed-off-by: gpittala <ganeshkpittala(a)gmail.com> --- .../greybus/Documentation/firmware/firmware.c | 32 ++-- drivers/staging/greybus/arche-apb-ctrl.c | 11 +- drivers/staging/greybus/arche-platform.c | 11 +- drivers/staging/greybus/audio_gb.c | 37 +++- .../staging/greybus/audio_manager_module.c | 13 +- drivers/staging/greybus/gbphy.c | 3 +- drivers/staging/greybus/light.c | 5 +- drivers/staging/greybus/loopback.c | 170 ++++++++++-------- 8 files changed, 159 insertions(+), 123 deletions(-) diff --git a/drivers/staging/greybus/Documentation/firmware/firmware.c b/drivers/staging/greybus/Documentation/firmware/firmware.c index 765d69faa9cc..8e375c88c881 100644 --- a/drivers/staging/greybus/Documentation/firmware/firmware.c +++ b/drivers/staging/greybus/Documentation/firmware/firmware.c @@ -47,12 +47,12 @@ static int update_intf_firmware(int fd) ret = ioctl(fd, FW_MGMT_IOC_GET_INTF_FW, &intf_fw_info); if (ret < 0) { printf("Failed to get interface firmware version: %s (%d)\n", - fwdev, ret); + fwdev, ret); return -1; } printf("Interface Firmware tag (%s), major (%d), minor (%d)\n", - intf_fw_info.firmware_tag, intf_fw_info.major, + intf_fw_info.firmware_tag, intf_fw_info.major, intf_fw_info.minor); /* Try Interface Firmware load over Unipro */ @@ -63,25 +63,25 @@ static int update_intf_firmware(int fd) intf_load.major = 0; intf_load.minor = 0; - strncpy((char *)&intf_load.firmware_tag, firmware_tag, + strscpy((char *)&intf_load.firmware_tag, firmware_tag, GB_FIRMWARE_U_TAG_MAX_SIZE); ret = ioctl(fd, FW_MGMT_IOC_INTF_LOAD_AND_VALIDATE, &intf_load); if (ret < 0) { printf("Failed to load interface firmware: %s (%d)\n", fwdev, - ret); + ret); return -1; } if (intf_load.status != GB_FW_U_LOAD_STATUS_VALIDATED && intf_load.status != GB_FW_U_LOAD_STATUS_UNVALIDATED) { printf("Load status says loading failed: %d\n", - intf_load.status); + intf_load.status); return -1; } printf("Interface Firmware (%s) Load done: major: %d, minor: %d, status: %d\n", - firmware_tag, intf_load.major, intf_load.minor, + firmware_tag, intf_load.major, intf_load.minor, intf_load.status); /* Initiate Mode-switch to the newly loaded firmware */ @@ -101,35 +101,35 @@ static int update_backend_firmware(int fd) /* Get Backend Firmware Version */ printf("Getting Backend Firmware Version\n"); - strncpy((char *)&backend_fw_info.firmware_tag, firmware_tag, + strscpy((char *)&backend_fw_info.firmware_tag, firmware_tag, GB_FIRMWARE_U_TAG_MAX_SIZE); retry_fw_version: ret = ioctl(fd, FW_MGMT_IOC_GET_BACKEND_FW, &backend_fw_info); if (ret < 0) { printf("Failed to get backend firmware version: %s (%d)\n", - fwdev, ret); + fwdev, ret); return -1; } printf("Backend Firmware tag (%s), major (%d), minor (%d), status (%d)\n", - backend_fw_info.firmware_tag, backend_fw_info.major, + backend_fw_info.firmware_tag, backend_fw_info.major, backend_fw_info.minor, backend_fw_info.status); if (backend_fw_info.status == GB_FW_U_BACKEND_VERSION_STATUS_RETRY) goto retry_fw_version; - if ((backend_fw_info.status != GB_FW_U_BACKEND_VERSION_STATUS_SUCCESS) - && (backend_fw_info.status != GB_FW_U_BACKEND_VERSION_STATUS_NOT_AVAILABLE)) { + if ((backend_fw_info.status != GB_FW_U_BACKEND_VERSION_STATUS_SUCCESS) && + (backend_fw_info.status != GB_FW_U_BACKEND_VERSION_STATUS_NOT_AVAILABLE)) { printf("Failed to get backend firmware version: %s (%d)\n", - fwdev, backend_fw_info.status); + fwdev, backend_fw_info.status); return -1; } /* Try Backend Firmware Update over Unipro */ printf("Updating Backend Firmware\n"); - strncpy((char *)&backend_update.firmware_tag, firmware_tag, + strscpy((char *)&backend_update.firmware_tag, firmware_tag, GB_FIRMWARE_U_TAG_MAX_SIZE); retry_fw_update: @@ -148,10 +148,10 @@ static int update_backend_firmware(int fd) if (backend_update.status != GB_FW_U_BACKEND_FW_STATUS_SUCCESS) { printf("Load status says loading failed: %d\n", - backend_update.status); + backend_update.status); } else { printf("Backend Firmware (%s) Load done: status: %d\n", - firmware_tag, backend_update.status); + firmware_tag, backend_update.status); } return 0; @@ -185,7 +185,7 @@ int main(int argc, char *argv[]) fw_timeout = strtoul(argv[4], &endptr, 10); printf("Trying Firmware update: fwdev: %s, type: %s, tag: %s, timeout: %u\n", - fwdev, fw_update_type == 0 ? "interface" : "backend", + fwdev, fw_update_type == 0 ? "interface" : "backend", firmware_tag, fw_timeout); printf("Opening %s firmware management device\n", fwdev); diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c index 90ab32638d3f..9862188e8367 100644 --- a/drivers/staging/greybus/arche-apb-ctrl.c +++ b/drivers/staging/greybus/arche-apb-ctrl.c @@ -17,6 +17,7 @@ #include <linux/pm.h> #include <linux/regulator/consumer.h> #include <linux/spinlock.h> +#include <linux/sysfs.h> #include "arche_platform.h" static void apb_bootret_deassert(struct device *dev); @@ -299,16 +300,16 @@ static ssize_t state_show(struct device *dev, switch (apb->state) { case ARCHE_PLATFORM_STATE_OFF: - return sprintf(buf, "off%s\n", + return sysfs_emit(buf, "off%s\n", apb->init_disabled ? ",disabled" : ""); case ARCHE_PLATFORM_STATE_ACTIVE: - return sprintf(buf, "active\n"); + return sysfs_emit(buf, "active\n"); case ARCHE_PLATFORM_STATE_STANDBY: - return sprintf(buf, "standby\n"); + return sysfs_emit(buf, "standby\n"); case ARCHE_PLATFORM_STATE_FW_FLASHING: - return sprintf(buf, "fw_flashing\n"); + return sysfs_emit(buf, "fw_flashing\n"); default: - return sprintf(buf, "unknown state\n"); + return sysfs_emit(buf, "unknown state\n"); } } diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index d48464390f58..2e706c1169d5 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -21,6 +21,7 @@ #include <linux/time.h> #include <linux/greybus.h> #include <linux/of.h> +#include <linux/sysfs.h> #include "arche_platform.h" #if IS_ENABLED(CONFIG_USB_HSIC_USB3613) @@ -374,15 +375,15 @@ static ssize_t state_show(struct device *dev, switch (arche_pdata->state) { case ARCHE_PLATFORM_STATE_OFF: - return sprintf(buf, "off\n"); + return sysfs_emit(buf, "off\n"); case ARCHE_PLATFORM_STATE_ACTIVE: - return sprintf(buf, "active\n"); + return sysfs_emit(buf, "active\n"); case ARCHE_PLATFORM_STATE_STANDBY: - return sprintf(buf, "standby\n"); + return sysfs_emit(buf, "standby\n"); case ARCHE_PLATFORM_STATE_FW_FLASHING: - return sprintf(buf, "fw_flashing\n"); + return sysfs_emit(buf, "fw_flashing\n"); default: - return sprintf(buf, "unknown state\n"); + return sysfs_emit(buf, "unknown state\n"); } } diff --git a/drivers/staging/greybus/audio_gb.c b/drivers/staging/greybus/audio_gb.c index 9d8994fdb41a..c7f8df7b4cbe 100644 --- a/drivers/staging/greybus/audio_gb.c +++ b/drivers/staging/greybus/audio_gb.c @@ -8,21 +8,28 @@ #include <linux/greybus.h> #include "audio_codec.h" -/* TODO: Split into separate calls */ -int gb_audio_gb_get_topology(struct gb_connection *connection, - struct gb_audio_topology **topology) +static int gb_audio_gb_get_topology_size(struct gb_connection *connection, + u16 *size) { - struct gb_audio_get_topology_size_response size_resp; - struct gb_audio_topology *topo; - u16 size; + struct gb_audio_get_topology_size_response resp; int ret; ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_TOPOLOGY_SIZE, - NULL, 0, &size_resp, sizeof(size_resp)); + NULL, 0, &resp, sizeof(resp)); if (ret) return ret; - size = le16_to_cpu(size_resp.size); + *size = le16_to_cpu(resp.size); + return 0; +} + +static int gb_audio_gb_read_topology(struct gb_connection *connection, + struct gb_audio_topology **topology, + u16 size) +{ + struct gb_audio_topology *topo; + int ret; + if (size < sizeof(*topo)) return -ENODATA; @@ -38,9 +45,21 @@ int gb_audio_gb_get_topology(struct gb_connection *connection, } *topology = topo; - return 0; } + +int gb_audio_gb_get_topology(struct gb_connection *connection, + struct gb_audio_topology **topology) +{ + u16 size; + int ret; + + ret = gb_audio_gb_get_topology_size(connection, &size); + if (ret) + return ret; + + return gb_audio_gb_read_topology(connection, topology, size); +} EXPORT_SYMBOL_GPL(gb_audio_gb_get_topology); int gb_audio_gb_get_control(struct gb_connection *connection, diff --git a/drivers/staging/greybus/audio_manager_module.c b/drivers/staging/greybus/audio_manager_module.c index 4a4dfb42f50f..781144be4eec 100644 --- a/drivers/staging/greybus/audio_manager_module.c +++ b/drivers/staging/greybus/audio_manager_module.c @@ -6,6 +6,7 @@ */ #include <linux/slab.h> +#include <linux/sysfs.h> #include "audio_manager.h" #include "audio_manager_private.h" @@ -76,7 +77,7 @@ static void gb_audio_module_release(struct kobject *kobj) static ssize_t gb_audio_module_name_show(struct gb_audio_manager_module *module, struct gb_audio_manager_module_attribute *attr, char *buf) { - return sprintf(buf, "%s", module->desc.name); + return sysfs_emit(buf, "%s\n", module->desc.name); } static struct gb_audio_manager_module_attribute gb_audio_module_name_attribute = @@ -85,7 +86,7 @@ static struct gb_audio_manager_module_attribute gb_audio_module_name_attribute = static ssize_t gb_audio_module_vid_show(struct gb_audio_manager_module *module, struct gb_audio_manager_module_attribute *attr, char *buf) { - return sprintf(buf, "%d", module->desc.vid); + return sysfs_emit(buf, "%d\n", module->desc.vid); } static struct gb_audio_manager_module_attribute gb_audio_module_vid_attribute = @@ -94,7 +95,7 @@ static struct gb_audio_manager_module_attribute gb_audio_module_vid_attribute = static ssize_t gb_audio_module_pid_show(struct gb_audio_manager_module *module, struct gb_audio_manager_module_attribute *attr, char *buf) { - return sprintf(buf, "%d", module->desc.pid); + return sysfs_emit(buf, "%d\n", module->desc.pid); } static struct gb_audio_manager_module_attribute gb_audio_module_pid_attribute = @@ -104,7 +105,7 @@ static ssize_t gb_audio_module_intf_id_show(struct gb_audio_manager_module *modu struct gb_audio_manager_module_attribute *attr, char *buf) { - return sprintf(buf, "%d", module->desc.intf_id); + return sysfs_emit(buf, "%d\n", module->desc.intf_id); } static struct gb_audio_manager_module_attribute @@ -115,7 +116,7 @@ static ssize_t gb_audio_module_ip_devices_show(struct gb_audio_manager_module *m struct gb_audio_manager_module_attribute *attr, char *buf) { - return sprintf(buf, "0x%X", module->desc.ip_devices); + return sysfs_emit(buf, "0x%X\n", module->desc.ip_devices); } static struct gb_audio_manager_module_attribute @@ -126,7 +127,7 @@ static ssize_t gb_audio_module_op_devices_show(struct gb_audio_manager_module *m struct gb_audio_manager_module_attribute *attr, char *buf) { - return sprintf(buf, "0x%X", module->desc.op_devices); + return sysfs_emit(buf, "0x%X\n", module->desc.op_devices); } static struct gb_audio_manager_module_attribute diff --git a/drivers/staging/greybus/gbphy.c b/drivers/staging/greybus/gbphy.c index 6adcad286633..72d72aa7cb0f 100644 --- a/drivers/staging/greybus/gbphy.c +++ b/drivers/staging/greybus/gbphy.c @@ -14,6 +14,7 @@ #include <linux/slab.h> #include <linux/device.h> #include <linux/greybus.h> +#include <linux/sysfs.h> #include "gbphy.h" @@ -31,7 +32,7 @@ static ssize_t protocol_id_show(struct device *dev, { struct gbphy_device *gbphy_dev = to_gbphy_dev(dev); - return sprintf(buf, "0x%02x\n", gbphy_dev->cport_desc->protocol_id); + return sysfs_emit(buf, "0x%02x\n", gbphy_dev->cport_desc->protocol_id); } static DEVICE_ATTR_RO(protocol_id); diff --git a/drivers/staging/greybus/light.c b/drivers/staging/greybus/light.c index e509fdc715db..db0e98faec08 100644 --- a/drivers/staging/greybus/light.c +++ b/drivers/staging/greybus/light.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/greybus.h> +#include <linux/sysfs.h> #include <media/v4l2-flash-led-class.h> #define NAMES_MAX 32 @@ -173,7 +174,7 @@ static ssize_t fade_##__dir##_show(struct device *dev, \ struct led_classdev *cdev = dev_get_drvdata(dev); \ struct gb_channel *channel = get_channel_from_cdev(cdev); \ \ - return sprintf(buf, "%u\n", channel->fade_##__dir); \ + return sysfs_emit(buf, "%u\n", channel->fade_##__dir); \ } \ \ static ssize_t fade_##__dir##_store(struct device *dev, \ @@ -220,7 +221,7 @@ static ssize_t color_show(struct device *dev, struct device_attribute *attr, struct led_classdev *cdev = dev_get_drvdata(dev); struct gb_channel *channel = get_channel_from_cdev(cdev); - return sprintf(buf, "0x%08x\n", channel->color); + return sysfs_emit(buf, "0x%08x\n", channel->color); } static ssize_t color_store(struct device *dev, struct device_attribute *attr, diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c index 1f19323b0e1a..0c1b45aa8b7b 100644 --- a/drivers/staging/greybus/loopback.c +++ b/drivers/staging/greybus/loopback.c @@ -26,6 +26,7 @@ #include <linux/atomic.h> #include <linux/pm_runtime.h> #include <linux/greybus.h> +#include <linux/sysfs.h> #include <asm/div64.h> #define NSEC_PER_DAY 86400000000000ULL @@ -125,7 +126,7 @@ static ssize_t field##_show(struct device *dev, \ char *buf) \ { \ struct gb_loopback *gb = dev_get_drvdata(dev); \ - return sprintf(buf, "%u\n", gb->field); \ + return sysfs_emit(buf, "%u\n", gb->field); \ } \ static DEVICE_ATTR_RO(field) @@ -137,8 +138,8 @@ static ssize_t name##_##field##_show(struct device *dev, \ struct gb_loopback *gb = dev_get_drvdata(dev); \ /* Report 0 for min and max if no transfer succeeded */ \ if (!gb->requests_completed) \ - return sprintf(buf, "0\n"); \ - return sprintf(buf, "%" #type "\n", gb->name.field); \ + return sysfs_emit(buf, "0\n"); \ + return sysfs_emit(buf, "%\n" #type "\n", gb->name.field); \ } \ static DEVICE_ATTR_RO(name##_##field) @@ -158,7 +159,7 @@ static ssize_t name##_avg_show(struct device *dev, \ rem = do_div(avg, count); \ rem *= 1000000; \ do_div(rem, count); \ - return sprintf(buf, "%llu.%06u\n", avg, (u32)rem); \ + return sysfs_emit(buf, "%llu.%06u\n", avg, (u32)rem); \ } \ static DEVICE_ATTR_RO(name##_avg) @@ -173,7 +174,7 @@ static ssize_t field##_show(struct device *dev, \ char *buf) \ { \ struct gb_loopback *gb = dev_get_drvdata(dev); \ - return sprintf(buf, "%" #type "\n", gb->field); \ + return sysfs_emit(buf, "%\n" #type "\n", gb->field); \ } \ static ssize_t field##_store(struct device *dev, \ struct device_attribute *attr, \ @@ -199,7 +200,7 @@ static ssize_t field##_show(struct device *dev, \ char *buf) \ { \ struct gb_loopback *gb = dev_get_drvdata(dev); \ - return sprintf(buf, "%u\n", gb->field); \ + return sysfs_emit(buf, "%u\n", gb->field); \ } \ static DEVICE_ATTR_RO(field) @@ -209,7 +210,7 @@ static ssize_t field##_show(struct device *dev, \ char *buf) \ { \ struct gb_loopback *gb = dev_get_drvdata(dev); \ - return sprintf(buf, "%" #type "\n", gb->field); \ + return sysfs_emit(buf, "%\n" #type "\n", gb->field); \ } \ static ssize_t field##_store(struct device *dev, \ struct device_attribute *attr, \ @@ -679,7 +680,7 @@ static int gb_loopback_request_handler(struct gb_operation *operation) } if (!gb_operation_response_alloc(operation, - len + sizeof(*response), GFP_KERNEL)) { + len + sizeof(*response), GFP_KERNEL)) { dev_err(dev, "error allocating response\n"); return -ENOMEM; } @@ -831,109 +832,120 @@ static void gb_loopback_async_wait_to_send(struct gb_loopback *gb) kthread_should_stop()); } -static int gb_loopback_fn(void *data) +static bool gb_loopback_should_stop(struct gb_loopback *gb, + struct gb_bundle *bundle) +{ + if (!gb->type) { + gb_pm_runtime_put_autosuspend(bundle); + wait_event_interruptible(gb->wq, + gb->type || kthread_should_stop()); + if (kthread_should_stop()) + return true; + gb_pm_runtime_get_sync(bundle); + } + return kthread_should_stop(); +} + +static void gb_loopback_handle_completion(struct gb_loopback *gb, + struct gb_bundle *bundle) +{ + gb_loopback_async_wait_all(gb); + + mutex_lock(&gb->mutex); + if (gb->iteration_count == gb->iteration_max) { + gb->type = 0; + gb->send_count = 0; + sysfs_notify(&gb->dev->kobj, NULL, "iteration_count"); + dev_dbg(&bundle->dev, "load test complete\n"); + } else { + dev_dbg(&bundle->dev, "continuing on with new test set\n"); + } + mutex_unlock(&gb->mutex); +} + +static void gb_loopback_dispatch_operation(struct gb_loopback *gb, int type, + u32 size) { int error = 0; - int us_wait = 0; - int type; - int ret; - u32 size; + if (gb->async) { + if (type == GB_LOOPBACK_TYPE_PING) + error = gb_loopback_async_ping(gb); + else if (type == GB_LOOPBACK_TYPE_TRANSFER) + error = gb_loopback_async_transfer(gb, size); + else if (type == GB_LOOPBACK_TYPE_SINK) + error = gb_loopback_async_sink(gb, size); + + if (error) { + gb->error++; + gb->iteration_count++; + } + } else { + if (type == GB_LOOPBACK_TYPE_PING) + error = gb_loopback_sync_ping(gb); + else if (type == GB_LOOPBACK_TYPE_TRANSFER) + error = gb_loopback_sync_transfer(gb, size); + else if (type == GB_LOOPBACK_TYPE_SINK) + error = gb_loopback_sync_sink(gb, size); + + if (error) + gb->error++; + gb->iteration_count++; + gb_loopback_calculate_stats(gb, !!error); + } +} + +static void gb_loopback_delay_if_needed(int us_wait) +{ + if (us_wait) { + if (us_wait < 20000) + usleep_range(us_wait, us_wait + 100); + else + msleep(us_wait / 1000); + } +} + +static int gb_loopback_fn(void *data) +{ + int us_wait = 0, type; + u32 size; struct gb_loopback *gb = data; struct gb_bundle *bundle = gb->connection->bundle; - ret = gb_pm_runtime_get_sync(bundle); - if (ret) - return ret; + if (gb_pm_runtime_get_sync(bundle)) + return -EIO; while (1) { - if (!gb->type) { - gb_pm_runtime_put_autosuspend(bundle); - wait_event_interruptible(gb->wq, gb->type || - kthread_should_stop()); - ret = gb_pm_runtime_get_sync(bundle); - if (ret) - return ret; - } - - if (kthread_should_stop()) + if (gb_loopback_should_stop(gb, bundle)) break; - /* Limit the maximum number of in-flight async operations */ gb_loopback_async_wait_to_send(gb); if (kthread_should_stop()) break; mutex_lock(&gb->mutex); - /* Optionally terminate */ if (gb->send_count == gb->iteration_max) { mutex_unlock(&gb->mutex); - - /* Wait for synchronous and asynchronous completion */ - gb_loopback_async_wait_all(gb); - - /* Mark complete unless user-space has poked us */ - mutex_lock(&gb->mutex); - if (gb->iteration_count == gb->iteration_max) { - gb->type = 0; - gb->send_count = 0; - sysfs_notify(&gb->dev->kobj, NULL, - "iteration_count"); - dev_dbg(&bundle->dev, "load test complete\n"); - } else { - dev_dbg(&bundle->dev, - "continuing on with new test set\n"); - } - mutex_unlock(&gb->mutex); + gb_loopback_handle_completion(gb, bundle); continue; } + size = gb->size; us_wait = gb->us_wait; type = gb->type; if (ktime_to_ns(gb->ts) == 0) gb->ts = ktime_get(); - /* Else operations to perform */ - if (gb->async) { - if (type == GB_LOOPBACK_TYPE_PING) - error = gb_loopback_async_ping(gb); - else if (type == GB_LOOPBACK_TYPE_TRANSFER) - error = gb_loopback_async_transfer(gb, size); - else if (type == GB_LOOPBACK_TYPE_SINK) - error = gb_loopback_async_sink(gb, size); - - if (error) { - gb->error++; - gb->iteration_count++; - } - } else { - /* We are effectively single threaded here */ - if (type == GB_LOOPBACK_TYPE_PING) - error = gb_loopback_sync_ping(gb); - else if (type == GB_LOOPBACK_TYPE_TRANSFER) - error = gb_loopback_sync_transfer(gb, size); - else if (type == GB_LOOPBACK_TYPE_SINK) - error = gb_loopback_sync_sink(gb, size); - - if (error) - gb->error++; - gb->iteration_count++; - gb_loopback_calculate_stats(gb, !!error); - } + gb_loopback_dispatch_operation(gb, type, size); + gb->send_count++; mutex_unlock(&gb->mutex); - if (us_wait) { - if (us_wait < 20000) - usleep_range(us_wait, us_wait + 100); - else - msleep(us_wait / 1000); - } + gb_loopback_delay_if_needed(us_wait); } gb_pm_runtime_put_autosuspend(bundle); - return 0; } -- 2.43.0

1 year, 3 months

[PATCH] staging: greybus: Alignment warning

by Erick Karanja

Correct the alignment of the parameters to match the open parenthesis. Reported by checkpatch: CHECK: Alignment should match open parenthesis Signed-off-by: Erick Karanja <karanja99erick(a)gmail.com> --- drivers/staging/greybus/camera.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/greybus/camera.c b/drivers/staging/greybus/camera.c index 5d80ace41d8e..ec9fddfc0b14 100644 --- a/drivers/staging/greybus/camera.c +++ b/drivers/staging/greybus/camera.c @@ -1165,8 +1165,8 @@ static int gb_camera_debugfs_init(struct gb_camera *gcam) gcam->debugfs.buffers[i].length = 0; debugfs_create_file_aux(entry->name, entry->mask, - gcam->debugfs.root, gcam, entry, - &gb_camera_debugfs_ops); + gcam->debugfs.root, gcam, entry, + &gb_camera_debugfs_ops); } return 0; -- 2.43.0

1 year, 4 months

[PATCH] staging: greybus: fix line length issue

by ErickKaranja

Fix line length exceeding 100 columns in arche-platform.c. The code now follows Linux kernel coding style guidelines by keeping lines under the maximum allowed length of 100 characters. Reported by checkpatch: CHECK: line length of 101 exceeds 100 columns Signed-off-by: ErickKaranja <karanja99erick(a)gmail.com> --- drivers/staging/greybus/arche-platform.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index d48464390f58..1a82a7a3991c 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -179,8 +179,8 @@ static irqreturn_t arche_platform_wd_irq(int irq, void *devid) */ if (arche_pdata->wake_detect_state != WD_STATE_COLDBOOT_START) { - arche_platform_set_wake_detect_state(arche_pdata, - WD_STATE_COLDBOOT_TRIG); + arche_platform_set_wake_detect_state + (arche_pdata, WD_STATE_COLDBOOT_TRIG); spin_unlock_irqrestore(&arche_pdata->wake_lock, flags); return IRQ_WAKE_THREAD; -- 2.43.0

1 year, 4 months

[PATCH v2 22/31] tty: staging/greybus: pass tty_driver flags to tty_alloc_driver()

by Jiri Slaby (SUSE)

tty_alloc_driver() is supposed to receive tty driver flags. Signed-off-by: Jiri Slaby (SUSE) <jirislaby(a)kernel.org> Acked-by: Johan Hovold <johan(a)kernel.org> Cc: David Lin <dtwlin(a)gmail.com> Cc: Alex Elder <elder(a)kernel.org> Cc: greybus-dev(a)lists.linaro.org Cc: linux-staging(a)lists.linux.dev --- drivers/staging/greybus/uart.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c index 8eab94cb06fa..308ed1ca9947 100644 --- a/drivers/staging/greybus/uart.c +++ b/drivers/staging/greybus/uart.c @@ -948,7 +948,8 @@ static int gb_tty_init(void) { int retval = 0; - gb_tty_driver = tty_alloc_driver(GB_NUM_MINORS, 0); + gb_tty_driver = tty_alloc_driver(GB_NUM_MINORS, TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV); if (IS_ERR(gb_tty_driver)) { pr_err("Can not allocate tty driver\n"); retval = -ENOMEM; @@ -961,7 +962,6 @@ static int gb_tty_init(void) gb_tty_driver->minor_start = 0; gb_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; gb_tty_driver->subtype = SERIAL_TYPE_NORMAL; - gb_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; gb_tty_driver->init_termios = tty_std_termios; gb_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; -- 2.49.0

1 year, 4 months

Re: [PATCH v2 00/31] tty: cleanup no. 99

by Jiri Slaby

Cc (sorry): Alex Elder <elder(a)kernel.org> Andrew Lunn <andrew+netdev(a)lunn.ch> Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> David Lin <dtwlin(a)gmail.com> "David S. Miller" <davem(a)davemloft.net> Eric Dumazet <edumazet(a)google.com> greybus-dev(a)lists.linaro.org "Ilpo Järvinen" <ilpo.jarvinen(a)linux.intel.com> Jakub Kicinski <kuba(a)kernel.org> Johan Hovold <johan(a)kernel.org> linux-alpha(a)vger.kernel.org linux-mmc(a)vger.kernel.org linux-staging(a)lists.linux.dev Matt Turner <mattst88(a)gmail.com> netdev(a)vger.kernel.org Paolo Abeni <pabeni(a)redhat.com> Richard Henderson <richard.henderson(a)linaro.org> Rob Herring <robh(a)kernel.org> sparclinux(a)vger.kernel.org Ulf Hansson <ulf.hansson(a)linaro.org> On 17. 03. 25, 8:00, Jiri Slaby (SUSE) wrote: > Hi, > > this is (again) a series of cleanup in tty. I am trying to rework > tty+serial to avoid limitations of devices (so called NR_UART or > tty_alloc_driver()'s first parameter). And the below popped up while > crawling through the code. So this is only a prep cleanup. > > * many tty flags are now enums > * many functions were improved for readability > * quite a few unused or old code dropped > > In particular, the runtime behaviour of the kernel before and after the > changes is supposed to be bug to bug compatible (except moxa's ioctl > and ISA evils dropped). That is, noone should notice. > > [v2] > * use serial_port_in/out() helpers in 26/30 (and not use serial_in/out()) > * the last patch is new > > Jiri Slaby (SUSE) (31): > tty: convert "TTY Struct Flags" to an enum > tty: audit: do not use N_TTY_BUF_SIZE > tty: caif: do not use N_TTY_BUF_SIZE > tty: move N_TTY_BUF_SIZE to n_tty > tty: n_tty: use uint for space returned by tty_write_room() > tty: n_tty: simplify process_output() > tty: n_tty: clean up process_output_block() > tty: n_tty: drop n_tty_trace() > tty: n_tty: extract n_tty_continue_cookie() from n_tty_read() > tty: n_tty: extract n_tty_wait_for_input() > tty: n_tty: move more_to_be_read to the end of n_tty_read() > tty: tty_driver: move TTY macros to the top > tty: tty_driver: convert "TTY Driver Flags" to an enum > tty: tty_driver: document both {,__}tty_alloc_driver() properly > tty: tty_driver: introduce TTY driver sub/types enums > tty: serdev: drop serdev_controller_ops::write_room() > tty: mmc: sdio: use bool for cts and remove parentheses > tty: moxa: drop version dump to logs > tty: moxa: drop ISA support > tty: moxa: carve out special ioctls and extra tty_port > tty: srmcons: fix retval from srmcons_init() > tty: staging/greybus: pass tty_driver flags to tty_alloc_driver() > tty: sunsu: drop serial_{in,out}p() > tty: sunsu: remove unused serial_icr_read() > serial: remove redundant tty_port_link_device() > serial: pass struct uart_state to uart_line_info() > serial: 8250: use serial_port_in/out() helpers > serial: 8250_rsa: simplify rsa8250_{request/release}_resource() > serial: 8250_port: do not use goto for UPQ_NO_TXEN_TEST code flow > serial: 8250_port: simplify serial8250_request_std_resource() > serial: switch change_irq and change_port to bool in uart_set_info() > > Documentation/driver-api/tty/tty_driver.rst | 4 +- > Documentation/driver-api/tty/tty_struct.rst | 2 +- > arch/alpha/kernel/srmcons.c | 62 ++--- > drivers/mmc/core/sdio_uart.c | 2 +- > drivers/net/caif/caif_serial.c | 2 +- > drivers/staging/greybus/uart.c | 4 +- > drivers/tty/Kconfig | 2 +- > drivers/tty/moxa.c | 251 +------------------- > drivers/tty/n_tty.c | 212 ++++++++--------- > drivers/tty/serdev/core.c | 11 - > drivers/tty/serdev/serdev-ttyport.c | 9 - > drivers/tty/serial/8250/8250_dw.c | 16 +- > drivers/tty/serial/8250/8250_fsl.c | 8 +- > drivers/tty/serial/8250/8250_omap.c | 2 +- > drivers/tty/serial/8250/8250_port.c | 59 ++--- > drivers/tty/serial/8250/8250_rsa.c | 21 +- > drivers/tty/serial/serial_core.c | 10 +- > drivers/tty/serial/sunsu.c | 178 ++++++-------- > drivers/tty/tty_audit.c | 10 +- > drivers/tty/tty_io.c | 8 +- > include/linux/serdev.h | 6 - > include/linux/tty.h | 53 +++-- > include/linux/tty_driver.h | 180 +++++++------- > 23 files changed, 412 insertions(+), 700 deletions(-) > -- js suse labs

1 year, 4 months

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