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authorInha Song <ideal.song@samsung.com>2015-08-07 04:35:59 +0300
committerLee Jones <lee.jones@linaro.org>2015-08-11 17:09:13 +0300
commitdd30acc889f586cecdea0d7f401f3dc80752b41e (patch)
tree75844c7603469a7ed1a14190789d4eda6b1deacd /drivers/mfd
parentff066f731a71409a3c29d8bd1d702867167c6994 (diff)
downloadlinux-dd30acc889f586cecdea0d7f401f3dc80752b41e.tar.xz
mfd: wm8994: Fix NULL pointer exception on missing pdata
If we use the dev_get_platdata, pdata can be NULL in DT environments. Actually, NULL pointer exception is occurs with error messages like this: [ 1.226583] Unable to handle kernel NULL pointer dereference at virtual address 00000044 [ 1.467910] [<c02f1e38>] (wm8994_irq_init) from [<c02f1bd4>] (wm8994_i2c_probe+0x684/0x858) [ 1.476241] [<c02f1bd4>] (wm8994_i2c_probe) from [<c0371c78>] (i2c_device_probe+0x11c/0x17c) In wm8994-core, we already checked whether platform data is NULL and set the wm8994->pdata to platform data if platform data is not NULL. So, we can use wm8994->pdata instead of platform data. Signed-off-by: Inha Song <ideal.song@samsung.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/wm8994-irq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c
index 6f1427d32a93..18710f3b5c53 100644
--- a/drivers/mfd/wm8994-irq.c
+++ b/drivers/mfd/wm8994-irq.c
@@ -186,7 +186,7 @@ int wm8994_irq_init(struct wm8994 *wm8994)
{
int ret;
unsigned long irqflags;
- struct wm8994_pdata *pdata = dev_get_platdata(wm8994->dev);
+ struct wm8994_pdata *pdata = &wm8994->pdata;
if (!wm8994->irq) {
dev_warn(wm8994->dev,