[3.12,39/82] staging:iio:ad799x fix error_free_irq which was freeing an irq that may not have been requested
diff mbox series

Message ID 20140220235020.646061257@linuxfoundation.org
State New, archived
Headers show
  • 3.12.13-stable review
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Commit Message

Greg KH Feb. 20, 2014, 11:52 p.m. UTC
3.12-stable review patch.  If anyone has any objections, please let me know.


From: Hartmut Knaack <knaack.h@gmx.de>

commit 38408d056188be29a6c4e17f3703c796551bb330 upstream.

Only free an IRQ in error_free_irq, if it has been requested previously.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

 drivers/staging/iio/adc/ad799x_core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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diff mbox series

--- a/drivers/staging/iio/adc/ad799x_core.c
+++ b/drivers/staging/iio/adc/ad799x_core.c
@@ -644,7 +644,8 @@  static int ad799x_probe(struct i2c_clien
 	return 0;
-	free_irq(client->irq, indio_dev);
+	if (client->irq > 0)
+		free_irq(client->irq, indio_dev);