hwmon: (max1111) Fix race condition causing NULL pointer exception

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 <[email protected]>
Acked-by: Russell King <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Acked-by: Marek Vasut <[email protected]>
Acked-by: Cyril Hrubis <[email protected]>
Tested-by: Stanislav Brabec <[email protected]>
Signed-off-by: Jean Delvare <[email protected]>
Cc: [email protected]

0 files changed, 0 insertions, 0 deletions