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Pavel Herrmann authored
spi_sync call uses its spi_message parameter to keep completion information, using a drvdata structure is not thread-safe. Use a mutex to prevent multiple access to shared driver data. Signed-off-by:
Pavel Herrmann <morpheus.ibis@gmail.com> Acked-by:
Russell King <rmk+kernel@arm.linux.org.uk> Acked-by:
Pavel Machek <pavel@ucw.cz> Acked-by:
Marek Vasut <marek.vasut@gmail.com> Acked-by:
Cyril Hrubis <metan@ucw.cz> Tested-by:
Stanislav Brabec <utx@penguin.cz> Signed-off-by:
Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org
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