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spi: pxa2xx: Fix cs_change management 

Fix cs_change management so that it is in line with other spi drivers.

In the spi core api helpers such as spi_bus_lock/unlock and spi_sync_locked
or cs_change field in spi_transfer help to manage chip select from the
device driver.

The driver was setting the chip select to idle if the message queue was
empty despite cs_change or other status field set by spi_bus_lock/unlock
or spi_sync_locked.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Christophe Ricard 2016-03-20 19:30:17 +01:00 committed by Mark Brown
parent 8c3ad488fe
commit a52db659c7
1 changed files with 2 additions and 3 deletions
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5
drivers/spi/spi-pxa2xx.c
View File

@ -570,9 +570,8 @@ static void giveback(struct driver_data *drv_data)
/* see if the next and current messages point
* to the same chip
*/
if (next_msg && next_msg->spi != msg->spi)
next_msg = NULL;
if (!next_msg || msg->state == ERROR_STATE)
if ((next_msg && next_msg->spi != msg->spi) ||
msg->state == ERROR_STATE)
cs_deassert(drv_data);
}