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authorJulia Lawall <Julia.Lawall@lip6.fr>2012-12-07 00:15:23 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-15 23:38:43 -0800
commiteea2172e6915a92cab1d3a79a4961e14a3c388ff (patch)
treed37dfa0ae8ab771df7ec8227d52a7a6dfc4c102e /drivers/w1
parentfeee830394cab4e697d2204da6d10a606619de3d (diff)
downloadlinux-eea2172e6915a92cab1d3a79a4961e14a3c388ff.tar.gz
drivers/w1/masters/ds1wm.c: use devm_ functions
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/w1')
-rw-r--r--drivers/w1/masters/ds1wm.c52
1 files changed, 18 insertions, 34 deletions
diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c
index 7c294f4dc0e..96cab6ac2b4 100644
--- a/drivers/w1/masters/ds1wm.c
+++ b/drivers/w1/masters/ds1wm.c
@@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/io.h>
#include <linux/irq.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
@@ -459,43 +460,34 @@ static int ds1wm_probe(struct platform_device *pdev)
if (!pdev)
return -ENODEV;
- ds1wm_data = kzalloc(sizeof(*ds1wm_data), GFP_KERNEL);
+ ds1wm_data = devm_kzalloc(&pdev->dev, sizeof(*ds1wm_data), GFP_KERNEL);
if (!ds1wm_data)
return -ENOMEM;
platform_set_drvdata(pdev, ds1wm_data);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENXIO;
- goto err0;
- }
- ds1wm_data->map = ioremap(res->start, resource_size(res));
- if (!ds1wm_data->map) {
- ret = -ENOMEM;
- goto err0;
- }
+ if (!res)
+ return -ENXIO;
+ ds1wm_data->map = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!ds1wm_data->map)
+ return -ENOMEM;
/* calculate bus shift from mem resource */
ds1wm_data->bus_shift = resource_size(res) >> 3;
ds1wm_data->pdev = pdev;
ds1wm_data->cell = mfd_get_cell(pdev);
- if (!ds1wm_data->cell) {
- ret = -ENODEV;
- goto err1;
- }
+ if (!ds1wm_data->cell)
+ return -ENODEV;
plat = pdev->dev.platform_data;
- if (!plat) {
- ret = -ENODEV;
- goto err1;
- }
+ if (!plat)
+ return -ENODEV;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!res) {
- ret = -ENXIO;
- goto err1;
- }
+ if (!res)
+ return -ENXIO;
ds1wm_data->irq = res->start;
ds1wm_data->int_en_reg_none = (plat->active_high ? DS1WM_INTEN_IAS : 0);
ds1wm_data->reset_recover_delay = plat->reset_recover_delay;
@@ -505,10 +497,10 @@ static int ds1wm_probe(struct platform_device *pdev)
if (res->flags & IORESOURCE_IRQ_LOWEDGE)
irq_set_irq_type(ds1wm_data->irq, IRQ_TYPE_EDGE_FALLING);
- ret = request_irq(ds1wm_data->irq, ds1wm_isr,
+ ret = devm_request_irq(&pdev->dev, ds1wm_data->irq, ds1wm_isr,
IRQF_DISABLED | IRQF_SHARED, "ds1wm", ds1wm_data);
if (ret)
- goto err1;
+ return ret;
ds1wm_up(ds1wm_data);
@@ -516,17 +508,12 @@ static int ds1wm_probe(struct platform_device *pdev)
ret = w1_add_master_device(&ds1wm_master);
if (ret)
- goto err2;
+ goto err;
return 0;
-err2:
+err:
ds1wm_down(ds1wm_data);
- free_irq(ds1wm_data->irq, ds1wm_data);
-err1:
- iounmap(ds1wm_data->map);
-err0:
- kfree(ds1wm_data);
return ret;
}
@@ -560,9 +547,6 @@ static int ds1wm_remove(struct platform_device *pdev)
w1_remove_master_device(&ds1wm_master);
ds1wm_down(ds1wm_data);
- free_irq(ds1wm_data->irq, ds1wm_data);
- iounmap(ds1wm_data->map);
- kfree(ds1wm_data);
return 0;
}