iio: pressure: bmp280: Tolerate IRQ before registering

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With DEBUG_SHIRQ enabled we have a kernel crash

[  116.482696] BUG: kernel NULL pointer dereference, address: 0000000000000000

...

[  116.606571] Call Trace:
[  116.609023]  <IRQ>
[  116.611047]  complete+0x34/0x50
[  116.614206]  bmp085_eoc_irq+0x9/0x10 [bmp280]

because DEBUG_SHIRQ mechanism fires an IRQ before registration and drivers
ought to be able to handle an interrupt happening before request_irq() returns.

Fixes: aae9539496 ("iio: pressure: bmp280: add support for BMP085 EOC interrupt")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

...

This commit is contained in:

Andy Shevchenko 2020-03-23 12:41:25 +02:00 • committed by Jonathan Cameron

parent b5fbf0568c

commit 97b31a6f5f

1 changed files with 4 additions and 1 deletions

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drivers/iio/pressure/bmp280-core.c

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