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Alex Elder 7a9366aa1e greybus: don't let i2c code assume non-null payload pointer This is in preparation for an upcoming patch, which makes the payload pointer be NULL when a message has zero bytes of payload. It ensures a null payload pointer never gets dereferenced. To do this we pass the response structure to gb_i2c_transfer_response() rather than just its data, and if it's null, returning immediately. Rearrange the logic in gb_i2c_transfer_operation() a bit. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>	History 2014-12-03 15:08:17 -08:00
drivers/staging/greybus	greybus: don't let i2c code assume non-null payload pointer	2014-12-03 15:08:17 -08:00

Alex Elder 7a9366aa1e greybus: don't let i2c code assume non-null payload pointer

This is in preparation for an upcoming patch, which makes the
payload pointer be NULL when a message has zero bytes of payload.

It ensures a null payload pointer never gets dereferenced.  To do
this we pass the response structure to gb_i2c_transfer_response()
rather than just its data, and if it's null, returning immediately.

Rearrange the logic in gb_i2c_transfer_operation() a bit.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

History

2014-12-03 15:08:17 -08:00

drivers/staging/greybus

greybus: don't let i2c code assume non-null payload pointer

2014-12-03 15:08:17 -08:00