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spi: make sure all transfer has proper speed set 

When spi client does the spi transfer and if it does not set
the speed for each transfer then set it as default
of spi device in spi core before calling low level transfer.

This will remove the extra check in low level driver for setting
speed.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Laxman Dewangan 2013-01-05 00:17:14 +05:30 committed by Grant Likely
parent c4a31f4300
commit 059b8ffeee
1 changed files with 4 additions and 2 deletions
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6
drivers/spi/spi.c
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@ -1369,12 +1369,14 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
} }
/** /**
* Set transfer bits_per_word as spi device default if it is not * Set transfer bits_per_word and max speed as spi device default if
* set for this transfer. * it is not set for this transfer.
*/ */
list_for_each_entry(xfer, &message->transfers, transfer_list) { list_for_each_entry(xfer, &message->transfers, transfer_list) {
if (!xfer->bits_per_word) if (!xfer->bits_per_word)
xfer->bits_per_word = spi->bits_per_word; xfer->bits_per_word = spi->bits_per_word;
if (!xfer->speed_hz)
xfer->speed_hz = spi->max_speed_hz;
} }
message->spi = spi; message->spi = spi;