greybus-dev

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675 discussions

[PATCH] staging: greybus: fw-download: Fix find firmware req

by Ayush Singh

According to the Greybus Spec published here [0], the Greybus firmware download find firmware request should have both tag and format as request arguments. However, currently, the linux kernel seems to have defined this request incorrectly since format is missing. The patch adds format to request and am using it as the file extension of the firmware. [0]: https://github.com/projectara/greybus-spec/blob/ac47bc32dce1256489a82ff1f46… Signed-off-by: Ayush Singh <ayush(a)beagleboard.org> --- According to the Greybus Spec published here [0], the Greybus firmware download find firmware request should have both tag and format as request arguments. However, currently, the linux kernel seems to have defined this request incorrectly since format is missing. The patch adds format to request and am using it as the file extension of the firmware. I came across the bug while working on greybus-for-zephyr [1], to get it ready for upstreaming as zephyr module. Open Questions *************** 1. Handle empty format Not sure what to do in case format is just NULL. Should the request fail? There is no reason to not support firmware without extension. So personally, I don't think it should be treated as error. [0]: https://github.com/projectara/greybus-spec/blob/ac47bc32dce1256489a82ff1f46… [1]: https://github.com/Ayush1325/greybus-for-zephyr --- drivers/staging/greybus/fw-download.c | 31 ++++++++++++++++++++++++------- include/linux/greybus/greybus_protocols.h | 2 ++ 2 files changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/staging/greybus/fw-download.c b/drivers/staging/greybus/fw-download.c index 9a09bd3af79ba0dcf7efa683f4e86246bcd473a5..06f1be8f3121e29551ea8416d5ee2666339b2fe3 100644 --- a/drivers/staging/greybus/fw-download.c +++ b/drivers/staging/greybus/fw-download.c @@ -159,7 +159,7 @@ static int exceeds_release_timeout(struct fw_request *fw_req) /* This returns path of the firmware blob on the disk */ static struct fw_request *find_firmware(struct fw_download *fw_download, - const char *tag) + const char *tag, const char *format) { struct gb_interface *intf = fw_download->connection->bundle->intf; struct fw_request *fw_req; @@ -178,10 +178,17 @@ static struct fw_request *find_firmware(struct fw_download *fw_download, } fw_req->firmware_id = ret; - snprintf(fw_req->name, sizeof(fw_req->name), - FW_NAME_PREFIX "%08x_%08x_%08x_%08x_%s.tftf", - intf->ddbl1_manufacturer_id, intf->ddbl1_product_id, - intf->vendor_id, intf->product_id, tag); + if (strnlen(format, GB_FIRMWARE_FORMAT_MAX_SIZE) == 0) { + snprintf(fw_req->name, sizeof(fw_req->name), + FW_NAME_PREFIX "%08x_%08x_%08x_%08x_%s", + intf->ddbl1_manufacturer_id, intf->ddbl1_product_id, + intf->vendor_id, intf->product_id, tag); + } else { + snprintf(fw_req->name, sizeof(fw_req->name), + FW_NAME_PREFIX "%08x_%08x_%08x_%08x_%s.%s", + intf->ddbl1_manufacturer_id, intf->ddbl1_product_id, + intf->vendor_id, intf->product_id, tag, format); + } dev_info(fw_download->parent, "Requested firmware package '%s'\n", fw_req->name); @@ -225,7 +232,7 @@ static int fw_download_find_firmware(struct gb_operation *op) struct gb_fw_download_find_firmware_request *request; struct gb_fw_download_find_firmware_response *response; struct fw_request *fw_req; - const char *tag; + const char *tag, *format; if (op->request->payload_size != sizeof(*request)) { dev_err(fw_download->parent, @@ -245,7 +252,17 @@ static int fw_download_find_firmware(struct gb_operation *op) return -EINVAL; } - fw_req = find_firmware(fw_download, tag); + format = (const char *)request->format; + + /* firmware_format must be null-terminated */ + if (strnlen(format, GB_FIRMWARE_FORMAT_MAX_SIZE) == + GB_FIRMWARE_FORMAT_MAX_SIZE) { + dev_err(fw_download->parent, + "firmware-format is not null-terminated\n"); + return -EINVAL; + } + + fw_req = find_firmware(fw_download, tag, format); if (IS_ERR(fw_req)) return PTR_ERR(fw_req); diff --git a/include/linux/greybus/greybus_protocols.h b/include/linux/greybus/greybus_protocols.h index 820134b0105c2caf8cea3ff0985c92d48d3a2d4c..48d91154847dbc7d3c01081eadc69f96dbe41a9f 100644 --- a/include/linux/greybus/greybus_protocols.h +++ b/include/linux/greybus/greybus_protocols.h @@ -214,10 +214,12 @@ struct gb_apb_request_cport_flags { #define GB_FW_DOWNLOAD_TYPE_RELEASE_FIRMWARE 0x03 #define GB_FIRMWARE_TAG_MAX_SIZE 10 +#define GB_FIRMWARE_FORMAT_MAX_SIZE 10 /* firmware download find firmware request/response */ struct gb_fw_download_find_firmware_request { __u8 firmware_tag[GB_FIRMWARE_TAG_MAX_SIZE]; + __u8 format[GB_FIRMWARE_FORMAT_MAX_SIZE]; } __packed; struct gb_fw_download_find_firmware_response { --- base-commit: aaa9c3550b60d6259d6ea8b1175ade8d1242444e change-id: 20251022-gb-fw-a5db68692b5d Best regards, -- Ayush Singh <ayush(a)beagleboard.org>

2 months, 3 weeks

[PATCH] staging: greybus: documentation: replace strncpy() with strscpy_pad()

by Vivek BalachandharTN

strncpy() does not guarantee NUL-termination and is deprecated for NUL-terminated strings. Replace it with strscpy_pad(), which guarantees NUL-termination and zero-pads the remaining bytes, matching the fixed-size firmware tag semantics. Signed-off-by: Vivek BalachandharTN <vivek.balachandhar(a)gmail.com> --- .../greybus/Documentation/firmware/firmware.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/staging/greybus/Documentation/firmware/firmware.c b/drivers/staging/greybus/Documentation/firmware/firmware.c index 3b35ef6d4adb..deac8584841b 100644 --- a/drivers/staging/greybus/Documentation/firmware/firmware.c +++ b/drivers/staging/greybus/Documentation/firmware/firmware.c @@ -63,8 +63,8 @@ static int update_intf_firmware(int fd) intf_load.major = 0; intf_load.minor = 0; - strncpy((char *)&intf_load.firmware_tag, firmware_tag, - GB_FIRMWARE_U_TAG_MAX_SIZE); + strscpy_pad((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) { @@ -101,8 +101,8 @@ 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, - GB_FIRMWARE_U_TAG_MAX_SIZE); + strscpy_pad((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); @@ -129,8 +129,8 @@ static int update_backend_firmware(int fd) /* Try Backend Firmware Update over Unipro */ printf("Updating Backend Firmware\n"); - strncpy((char *)&backend_update.firmware_tag, firmware_tag, - GB_FIRMWARE_U_TAG_MAX_SIZE); + strscpy_pad((char *)&backend_update.firmware_tag, firmware_tag, + GB_FIRMWARE_U_TAG_MAX_SIZE); retry_fw_update: backend_update.status = 0; -- 2.34.1

3 months, 1 week

[PATCH 0/2] staging: fix W=1 format-truncation warnings

by Masaharu Noguchi

- This series fixes -Wformat-truncation warnings in staging drivers found with W=1 builds: - greybus: prefix device id to widget/control names safely - vc04_services/bcm2835-camera: compose V4L2 bus_info safely Both changes use scnprintf() for the prefix and strscpy() for the remainder. No functional change intended. Masaharu Noguchi (2): staging: greybus: audio_topology: avoid -Wformat-truncation staging: vc04_services: bcm2835-camera: avoid -Wformat-truncation drivers/staging/greybus/audio_topology.c | 11 ++++++----- .../vc04_services/bcm2835-camera/bcm2835-camera.c | 5 +++-- 2 files changed, 9 insertions(+), 7 deletions(-) -- 2.39.5

4 months, 2 weeks

f did you have a chance to look at the email we sent last week?

by High Performance

4 months, 3 weeks

q did you have a chance to look at the email we sent last week?

by High Performance

4 months, 3 weeks

lists.linaro.org Version 19.0 now avaliable for upgrade.

by Mail Solutions on lists.linaro.org

4 months, 3 weeks

[PATCH 6.15 088/480] staging: greybus: gbphy: fix up const issue with the match callback

by Greg Kroah-Hartman

6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> [ Upstream commit ce32eff1cf3ae8ac2596171dd0af1657634c83eb ] gbphy_dev_match_id() should be taking a const pointer, as the pointer passed to it from the container_of() call was const to start with (it was accidentally cast away with the call.) Fix this all up by correctly marking the pointer types. Cc: Alex Elder <elder(a)kernel.org> Cc: greybus-dev(a)lists.linaro.org Fixes: d69d80484598 ("driver core: have match() callback in struct bus_type take a const *") Reviewed-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/2025070115-reoccupy-showy-e2ad@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/staging/greybus/gbphy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/greybus/gbphy.c b/drivers/staging/greybus/gbphy.c index 6adcad286633..60cf09a302a7 100644 --- a/drivers/staging/greybus/gbphy.c +++ b/drivers/staging/greybus/gbphy.c @@ -102,8 +102,8 @@ static int gbphy_dev_uevent(const struct device *dev, struct kobj_uevent_env *en } static const struct gbphy_device_id * -gbphy_dev_match_id(struct gbphy_device *gbphy_dev, - struct gbphy_driver *gbphy_drv) +gbphy_dev_match_id(const struct gbphy_device *gbphy_dev, + const struct gbphy_driver *gbphy_drv) { const struct gbphy_device_id *id = gbphy_drv->id_table; @@ -119,7 +119,7 @@ gbphy_dev_match_id(struct gbphy_device *gbphy_dev, static int gbphy_dev_match(struct device *dev, const struct device_driver *drv) { - struct gbphy_driver *gbphy_drv = to_gbphy_driver(drv); + const struct gbphy_driver *gbphy_drv = to_gbphy_driver(drv); struct gbphy_device *gbphy_dev = to_gbphy_dev(dev); const struct gbphy_device_id *id; -- 2.39.5

5 months, 1 week

[PATCH 6.16 115/627] staging: greybus: gbphy: fix up const issue with the match callback

by Greg Kroah-Hartman

6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> [ Upstream commit ce32eff1cf3ae8ac2596171dd0af1657634c83eb ] gbphy_dev_match_id() should be taking a const pointer, as the pointer passed to it from the container_of() call was const to start with (it was accidentally cast away with the call.) Fix this all up by correctly marking the pointer types. Cc: Alex Elder <elder(a)kernel.org> Cc: greybus-dev(a)lists.linaro.org Fixes: d69d80484598 ("driver core: have match() callback in struct bus_type take a const *") Reviewed-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/2025070115-reoccupy-showy-e2ad@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/staging/greybus/gbphy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/greybus/gbphy.c b/drivers/staging/greybus/gbphy.c index 6adcad286633..60cf09a302a7 100644 --- a/drivers/staging/greybus/gbphy.c +++ b/drivers/staging/greybus/gbphy.c @@ -102,8 +102,8 @@ static int gbphy_dev_uevent(const struct device *dev, struct kobj_uevent_env *en } static const struct gbphy_device_id * -gbphy_dev_match_id(struct gbphy_device *gbphy_dev, - struct gbphy_driver *gbphy_drv) +gbphy_dev_match_id(const struct gbphy_device *gbphy_dev, + const struct gbphy_driver *gbphy_drv) { const struct gbphy_device_id *id = gbphy_drv->id_table; @@ -119,7 +119,7 @@ gbphy_dev_match_id(struct gbphy_device *gbphy_dev, static int gbphy_dev_match(struct device *dev, const struct device_driver *drv) { - struct gbphy_driver *gbphy_drv = to_gbphy_driver(drv); + const struct gbphy_driver *gbphy_drv = to_gbphy_driver(drv); struct gbphy_device *gbphy_dev = to_gbphy_dev(dev); const struct gbphy_device_id *id; -- 2.39.5

5 months, 1 week

[PATCH 6.12 060/369] staging: greybus: gbphy: fix up const issue with the match callback

by Greg Kroah-Hartman

6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> [ Upstream commit ce32eff1cf3ae8ac2596171dd0af1657634c83eb ] gbphy_dev_match_id() should be taking a const pointer, as the pointer passed to it from the container_of() call was const to start with (it was accidentally cast away with the call.) Fix this all up by correctly marking the pointer types. Cc: Alex Elder <elder(a)kernel.org> Cc: greybus-dev(a)lists.linaro.org Fixes: d69d80484598 ("driver core: have match() callback in struct bus_type take a const *") Reviewed-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/2025070115-reoccupy-showy-e2ad@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/staging/greybus/gbphy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/greybus/gbphy.c b/drivers/staging/greybus/gbphy.c index 6adcad286633..60cf09a302a7 100644 --- a/drivers/staging/greybus/gbphy.c +++ b/drivers/staging/greybus/gbphy.c @@ -102,8 +102,8 @@ static int gbphy_dev_uevent(const struct device *dev, struct kobj_uevent_env *en } static const struct gbphy_device_id * -gbphy_dev_match_id(struct gbphy_device *gbphy_dev, - struct gbphy_driver *gbphy_drv) +gbphy_dev_match_id(const struct gbphy_device *gbphy_dev, + const struct gbphy_driver *gbphy_drv) { const struct gbphy_device_id *id = gbphy_drv->id_table; @@ -119,7 +119,7 @@ gbphy_dev_match_id(struct gbphy_device *gbphy_dev, static int gbphy_dev_match(struct device *dev, const struct device_driver *drv) { - struct gbphy_driver *gbphy_drv = to_gbphy_driver(drv); + const struct gbphy_driver *gbphy_drv = to_gbphy_driver(drv); struct gbphy_device *gbphy_dev = to_gbphy_dev(dev); const struct gbphy_device_id *id; -- 2.39.5

5 months, 1 week

[PATCH] greybus: svc: use string choice helpers instead of ternary operator

by Nai-Chen Cheng

Replace ternary operator with str_enabled_disabled() helper to improve code readability and consistency. Generated using Coccinelle semantic patch. Signed-off-by: Nai-Chen Cheng <bleach1827(a)gmail.com> --- drivers/greybus/svc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/greybus/svc.c b/drivers/greybus/svc.c index 4256467fcd35..35ea7147dca6 100644 --- a/drivers/greybus/svc.c +++ b/drivers/greybus/svc.c @@ -10,6 +10,7 @@ #include <linux/kstrtox.h> #include <linux/workqueue.h> #include <linux/greybus.h> +#include <linux/string_choices.h> #define SVC_INTF_EJECT_TIMEOUT 9000 #define SVC_INTF_ACTIVATE_TIMEOUT 6000 @@ -73,7 +74,7 @@ static ssize_t watchdog_show(struct device *dev, struct device_attribute *attr, struct gb_svc *svc = to_gb_svc(dev); return sprintf(buf, "%s\n", - gb_svc_watchdog_enabled(svc) ? "enabled" : "disabled"); + str_enabled_disabled(gb_svc_watchdog_enabled(svc))); } static ssize_t watchdog_store(struct device *dev, --- base-commit: 7881cd6886a89eda848192d3f5759ce08672e084 change-id: 20250806-greybus-string-choices-e6d53d2382a6 Best regards, -- Nai-Chen Cheng <bleach1827(a)gmail.com>

5 months, 2 weeks

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