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author | Andrew F. Davis <afd@ti.com> | 2016-08-02 14:07:06 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-02 19:35:39 -0400 |
commit | 098f9fb0c962eb2fdba5f9d34f4cf7a938237184 (patch) | |
tree | 9f0ed4b3613e27b22c200e1f6f64a1089673f87c /drivers | |
parent | 0b9364b5cf11c6e504f4b77e24b15a0dc8a82df0 (diff) | |
download | linux-stable-098f9fb0c962eb2fdba5f9d34f4cf7a938237184.tar.gz linux-stable-098f9fb0c962eb2fdba5f9d34f4cf7a938237184.tar.bz2 linux-stable-098f9fb0c962eb2fdba5f9d34f4cf7a938237184.zip |
w1: remove need for ida and use PLATFORM_DEVID_AUTO
PLATFORM_DEVID_AUTO can be used to have the platform core assign a
unique ID instead of manually creating one with IDA. Do this in all
applicable drivers.
Link: http://lkml.kernel.org/r/20160531204313.20979-1-afd@ti.com
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/w1/slaves/w1_ds2760.c | 28 | ||||
-rw-r--r-- | drivers/w1/slaves/w1_ds2780.c | 25 | ||||
-rw-r--r-- | drivers/w1/slaves/w1_ds2781.c | 26 |
3 files changed, 13 insertions, 66 deletions
diff --git a/drivers/w1/slaves/w1_ds2760.c b/drivers/w1/slaves/w1_ds2760.c index d9079d48d112..59a81cfe64d5 100644 --- a/drivers/w1/slaves/w1_ds2760.c +++ b/drivers/w1/slaves/w1_ds2760.c @@ -121,25 +121,14 @@ static const struct attribute_group *w1_ds2760_groups[] = { NULL, }; -static DEFINE_IDA(bat_ida); - static int w1_ds2760_add_slave(struct w1_slave *sl) { int ret; - int id; struct platform_device *pdev; - id = ida_simple_get(&bat_ida, 0, 0, GFP_KERNEL); - if (id < 0) { - ret = id; - goto noid; - } - - pdev = platform_device_alloc("ds2760-battery", id); - if (!pdev) { - ret = -ENOMEM; - goto pdev_alloc_failed; - } + pdev = platform_device_alloc("ds2760-battery", PLATFORM_DEVID_AUTO); + if (!pdev) + return -ENOMEM; pdev->dev.parent = &sl->dev; ret = platform_device_add(pdev); @@ -148,24 +137,19 @@ static int w1_ds2760_add_slave(struct w1_slave *sl) dev_set_drvdata(&sl->dev, pdev); - goto success; + return 0; pdev_add_failed: platform_device_put(pdev); -pdev_alloc_failed: - ida_simple_remove(&bat_ida, id); -noid: -success: + return ret; } static void w1_ds2760_remove_slave(struct w1_slave *sl) { struct platform_device *pdev = dev_get_drvdata(&sl->dev); - int id = pdev->id; platform_device_unregister(pdev); - ida_simple_remove(&bat_ida, id); } static struct w1_family_ops w1_ds2760_fops = { @@ -182,14 +166,12 @@ static struct w1_family w1_ds2760_family = { static int __init w1_ds2760_init(void) { pr_info("1-Wire driver for the DS2760 battery monitor chip - (c) 2004-2005, Szabolcs Gyurko\n"); - ida_init(&bat_ida); return w1_register_family(&w1_ds2760_family); } static void __exit w1_ds2760_exit(void) { w1_unregister_family(&w1_ds2760_family); - ida_destroy(&bat_ida); } EXPORT_SYMBOL(w1_ds2760_read); diff --git a/drivers/w1/slaves/w1_ds2780.c b/drivers/w1/slaves/w1_ds2780.c index 50e85f7929d4..e63eb86d66f1 100644 --- a/drivers/w1/slaves/w1_ds2780.c +++ b/drivers/w1/slaves/w1_ds2780.c @@ -113,25 +113,14 @@ static const struct attribute_group *w1_ds2780_groups[] = { NULL, }; -static DEFINE_IDA(bat_ida); - static int w1_ds2780_add_slave(struct w1_slave *sl) { int ret; - int id; struct platform_device *pdev; - id = ida_simple_get(&bat_ida, 0, 0, GFP_KERNEL); - if (id < 0) { - ret = id; - goto noid; - } - - pdev = platform_device_alloc("ds2780-battery", id); - if (!pdev) { - ret = -ENOMEM; - goto pdev_alloc_failed; - } + pdev = platform_device_alloc("ds2780-battery", PLATFORM_DEVID_AUTO); + if (!pdev) + return -ENOMEM; pdev->dev.parent = &sl->dev; ret = platform_device_add(pdev); @@ -144,19 +133,15 @@ static int w1_ds2780_add_slave(struct w1_slave *sl) pdev_add_failed: platform_device_put(pdev); -pdev_alloc_failed: - ida_simple_remove(&bat_ida, id); -noid: + return ret; } static void w1_ds2780_remove_slave(struct w1_slave *sl) { struct platform_device *pdev = dev_get_drvdata(&sl->dev); - int id = pdev->id; platform_device_unregister(pdev); - ida_simple_remove(&bat_ida, id); } static struct w1_family_ops w1_ds2780_fops = { @@ -172,14 +157,12 @@ static struct w1_family w1_ds2780_family = { static int __init w1_ds2780_init(void) { - ida_init(&bat_ida); return w1_register_family(&w1_ds2780_family); } static void __exit w1_ds2780_exit(void) { w1_unregister_family(&w1_ds2780_family); - ida_destroy(&bat_ida); } module_init(w1_ds2780_init); diff --git a/drivers/w1/slaves/w1_ds2781.c b/drivers/w1/slaves/w1_ds2781.c index 1eb98fb1688d..99b0f4dc0e31 100644 --- a/drivers/w1/slaves/w1_ds2781.c +++ b/drivers/w1/slaves/w1_ds2781.c @@ -17,7 +17,6 @@ #include <linux/types.h> #include <linux/platform_device.h> #include <linux/mutex.h> -#include <linux/idr.h> #include "../w1.h" #include "../w1_int.h" @@ -111,25 +110,14 @@ static const struct attribute_group *w1_ds2781_groups[] = { NULL, }; -static DEFINE_IDA(bat_ida); - static int w1_ds2781_add_slave(struct w1_slave *sl) { int ret; - int id; struct platform_device *pdev; - id = ida_simple_get(&bat_ida, 0, 0, GFP_KERNEL); - if (id < 0) { - ret = id; - goto noid; - } - - pdev = platform_device_alloc("ds2781-battery", id); - if (!pdev) { - ret = -ENOMEM; - goto pdev_alloc_failed; - } + pdev = platform_device_alloc("ds2781-battery", PLATFORM_DEVID_AUTO); + if (!pdev) + return -ENOMEM; pdev->dev.parent = &sl->dev; ret = platform_device_add(pdev); @@ -142,19 +130,15 @@ static int w1_ds2781_add_slave(struct w1_slave *sl) pdev_add_failed: platform_device_put(pdev); -pdev_alloc_failed: - ida_simple_remove(&bat_ida, id); -noid: + return ret; } static void w1_ds2781_remove_slave(struct w1_slave *sl) { struct platform_device *pdev = dev_get_drvdata(&sl->dev); - int id = pdev->id; platform_device_unregister(pdev); - ida_simple_remove(&bat_ida, id); } static struct w1_family_ops w1_ds2781_fops = { @@ -170,14 +154,12 @@ static struct w1_family w1_ds2781_family = { static int __init w1_ds2781_init(void) { - ida_init(&bat_ida); return w1_register_family(&w1_ds2781_family); } static void __exit w1_ds2781_exit(void) { w1_unregister_family(&w1_ds2781_family); - ida_destroy(&bat_ida); } module_init(w1_ds2781_init); |