[greybus-dev] Re: [PATCH] greybus: Remove usage of the deprecated ida_simple_xx() API

On 1/14/24 3:57 AM, Christophe JAILLET wrote:

ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove().

Note that the upper limit of ida_simple_get() is exclusive, but the one of ida_alloc_range()/ida_alloc_max() is inclusive. So a -1 has been added when needed.

Looks good.

Reviewed-by: Alex Elder elder@linaro.org

Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr

drivers/greybus/es2.c | 8 ++++---- drivers/greybus/hd.c | 16 ++++++++-------- drivers/greybus/interface.c | 9 ++++----- 3 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/drivers/greybus/es2.c b/drivers/greybus/es2.c index e89cca015095..1ee78d0d90b4 100644 --- a/drivers/greybus/es2.c +++ b/drivers/greybus/es2.c @@ -513,16 +513,16 @@ static int es2_cport_allocate(struct gb_host_device *hd, int cport_id, if (cport_id < 0) { ida_start = 0;

• ida_end = hd->num_cports;
  

• ida_end = hd->num_cports - 1;
  

  } else if (cport_id < hd->num_cports) { ida_start = cport_id;

• ida_end = cport_id + 1;
  

• ida_end = cport_id;
  

  } else { dev_err(&hd->dev, "cport %d not available\n", cport_id); return -EINVAL; }

• return ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);

• return ida_alloc_range(id_map, ida_start, ida_end, GFP_KERNEL); }

static void es2_cport_release(struct gb_host_device *hd, u16 cport_id) @@ -535,7 +535,7 @@ static void es2_cport_release(struct gb_host_device *hd, u16 cport_id) return; }

• ida_simple_remove(&hd->cport_id_map, cport_id);

• ida_free(&hd->cport_id_map, cport_id); }

static int cport_enable(struct gb_host_device *hd, u16 cport_id, diff --git a/drivers/greybus/hd.c b/drivers/greybus/hd.c index 72b21bf2d7d3..bc5fd2f53d8b 100644 --- a/drivers/greybus/hd.c +++ b/drivers/greybus/hd.c @@ -50,7 +50,7 @@ int gb_hd_cport_reserve(struct gb_host_device *hd, u16 cport_id) struct ida *id_map = &hd->cport_id_map; int ret;

• ret = ida_simple_get(id_map, cport_id, cport_id + 1, GFP_KERNEL);

• ret = ida_alloc_range(id_map, cport_id, cport_id, GFP_KERNEL); if (ret < 0) { dev_err(&hd->dev, "failed to reserve cport %u\n", cport_id); return ret;

@@ -64,7 +64,7 @@ void gb_hd_cport_release_reserved(struct gb_host_device *hd, u16 cport_id) { struct ida *id_map = &hd->cport_id_map;

• ida_simple_remove(id_map, cport_id);

• ida_free(id_map, cport_id); } EXPORT_SYMBOL_GPL(gb_hd_cport_release_reserved);

@@ -80,16 +80,16 @@ int gb_hd_cport_allocate(struct gb_host_device *hd, int cport_id, if (cport_id < 0) { ida_start = 0;

• ida_end = hd->num_cports;
  

• ida_end = hd->num_cports - 1;
  

  } else if (cport_id < hd->num_cports) { ida_start = cport_id;

• ida_end = cport_id + 1;
  

• ida_end = cport_id;
  

  } else { dev_err(&hd->dev, "cport %d not available\n", cport_id); return -EINVAL; }

• return ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);

• return ida_alloc_range(id_map, ida_start, ida_end, GFP_KERNEL); }

/* Locking: Caller guarantees serialisation */ @@ -100,7 +100,7 @@ void gb_hd_cport_release(struct gb_host_device *hd, u16 cport_id) return; }

• ida_simple_remove(&hd->cport_id_map, cport_id);

• ida_free(&hd->cport_id_map, cport_id); }

static void gb_hd_release(struct device *dev) @@ -111,7 +111,7 @@ static void gb_hd_release(struct device *dev) if (hd->svc) gb_svc_put(hd->svc);

• ida_simple_remove(&gb_hd_bus_id_map, hd->bus_id);

• ida_free(&gb_hd_bus_id_map, hd->bus_id); ida_destroy(&hd->cport_id_map); kfree(hd); }

@@ -162,7 +162,7 @@ struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver, if (!hd) return ERR_PTR(-ENOMEM);

• ret = ida_simple_get(&gb_hd_bus_id_map, 1, 0, GFP_KERNEL);

• ret = ida_alloc_min(&gb_hd_bus_id_map, 1, GFP_KERNEL); if (ret < 0) { kfree(hd); return ERR_PTR(ret);

diff --git a/drivers/greybus/interface.c b/drivers/greybus/interface.c index 9ec949a438ef..c3cfd62831ff 100644 --- a/drivers/greybus/interface.c +++ b/drivers/greybus/interface.c @@ -131,9 +131,8 @@ static int gb_interface_route_create(struct gb_interface *intf) int ret; /* Allocate an interface device id. */

• ret = ida_simple_get(&svc->device_id_map,

• 	     GB_SVC_DEVICE_ID_MIN, GB_SVC_DEVICE_ID_MAX + 1,
  

• 	     GFP_KERNEL);
  

• ret = ida_alloc_range(&svc->device_id_map, GB_SVC_DEVICE_ID_MIN,

• 	      GB_SVC_DEVICE_ID_MAX, GFP_KERNEL);
  

  if (ret < 0) { dev_err(&intf->dev, "failed to allocate device id: %d\n", ret); return ret;

@@ -165,7 +164,7 @@ static int gb_interface_route_create(struct gb_interface *intf) * XXX anymore. */ err_ida_remove:

• ida_simple_remove(&svc->device_id_map, device_id);

• ida_free(&svc->device_id_map, device_id);

return ret; } @@ -178,7 +177,7 @@ static void gb_interface_route_destroy(struct gb_interface *intf) return; gb_svc_route_destroy(svc, svc->ap_intf_id, intf->interface_id);

• ida_simple_remove(&svc->device_id_map, intf->device_id);

• ida_free(&svc->device_id_map, intf->device_id); intf->device_id = GB_INTERFACE_DEVICE_ID_BAD; }