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@xxxxxx>
---
drivers/spi/spi.c | 1 +
include/linux/spi/spi.h | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 32b7bb1..6a05b3c 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -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)
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 6ff26c8..d83841e 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -575,6 +575,7 @@ struct spi_message {
/* completion is reported through a callback */
void (*complete)(void *context);
void *context;
+ unsigned frame_length;
unsigned actual_length;
int status;
--
1.7.1
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