USB: serial: mos7720: fix control-message error handling

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Make sure to log an error on short transfers when reading a device
register.

Also clear the provided buffer (which if often an uninitialised
automatic variable) on errors as the driver currently does not bother to
check for errors.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

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This commit is contained in:

Johan Hovold 2017-01-12 14:56:17 +01:00

parent 36356a669e

commit 0d130367ab

1 changed files with 7 additions and 2 deletions

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9

drivers/usb/serial/mos7720.c

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