driver: spi: Modify core to compute the message length

Make spi core calculate the message length while
populating the other transfer parameters.

Usecase, driver can use it to populate framelength filed in their
controller.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Sourav Poddar 2013-07-18 15:31:25 +05:30 committed by Mark Brown
parent ad81f0545e
commit 078726ce6d
2 changed files with 2 additions and 0 deletions

View file

@ -1375,6 +1375,7 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
* it is not set for this transfer.
*/
list_for_each_entry(xfer, &message->transfers, transfer_list) {
message->frame_length += xfer->len;
if (!xfer->bits_per_word)
xfer->bits_per_word = spi->bits_per_word;
if (!xfer->speed_hz)

View file

@ -578,6 +578,7 @@ struct spi_message {
/* completion is reported through a callback */
void (*complete)(void *context);
void *context;
unsigned frame_length;
unsigned actual_length;
int status;