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hwmon: (lis3) Fix Oops with NULL platform data 

The recent addition of threaded irq handler causes a NULL dereference
when used with hp_accel driver, which has NULL pdata.

Acked-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Takashi Iwai 2010-09-23 10:01:11 -07:00 committed by Guenter Roeck
parent a850ea3037
commit f7c77a3dc4
1 changed files with 2 additions and 2 deletions
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4
drivers/hwmon/lis3lv02d.c
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@ -277,7 +277,7 @@ static irqreturn_t lis302dl_interrupt(int irq, void *dummy)
wake_up_interruptible(&lis3_dev.misc_wait);
kill_fasync(&lis3_dev.async_queue, SIGIO, POLL_IN);
out:
if (lis3_dev.whoami == WAI_8B && lis3_dev.idev &&
if (lis3_dev.pdata && lis3_dev.whoami == WAI_8B && lis3_dev.idev &&
lis3_dev.idev->input->users)
return IRQ_WAKE_THREAD;
return IRQ_HANDLED;
@ -718,7 +718,7 @@ int lis3lv02d_init_device(struct lis3lv02d *dev)
* io-apic is not configurable (and generates a warning) but I keep it
* in case of support for other hardware.
*/
if (dev->whoami == WAI_8B)
if (dev->pdata && dev->whoami == WAI_8B)
thread_fn = lis302dl_interrupt_thread1_8b;
else
thread_fn = NULL;