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.s...@samsung.com>
Acked-by: Charles Keepax <ckee...@opensource.wolfsonmicro.com>
---
drivers/mfd/wm8994-irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c
index 55c380a..55c59d9 100644
--- a/drivers/mfd/wm8994-irq.c
+++ b/drivers/mfd/wm8994-irq.c
@@ -193,7 +193,7 @@ 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,
--
2.0.0.390.gcb682f8
--
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