The patch titled
atmel_spi: allow transfer when max_speed_hz = 0
has been removed from the -mm tree. Its filename was
atmel_spi-allow-transfer-when-max_speed_hz-=-0.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: atmel_spi: allow transfer when max_speed_hz = 0
From: Stanislaw Gruszka <stf_xl@xxxxx>
For some reason I have to slowdown clock to touchscreen device.
In atmel_spi_setup() there is comment that max_speed_hz == 0 means as slow
as possible and divider is set to maximum value. But in
atmel_spi_transfer() function is check against not zero max_speed_hz with
EINVAL returned.
Probably driver should setup divider for each transfer based on
transfer->speed_hz value, but I think that would be not necessary overhead
as all used devices have constant clock.
Below patch works fine for me.
Signed-off-by: Stanislaw Gruszka <stf_xl@xxxxx>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@xxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/spi/atmel_spi.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff -puN drivers/spi/atmel_spi.c~atmel_spi-allow-transfer-when-max_speed_hz-=-0 drivers/spi/atmel_spi.c
--- a/drivers/spi/atmel_spi.c~atmel_spi-allow-transfer-when-max_speed_hz-=-0
+++ a/drivers/spi/atmel_spi.c
@@ -670,8 +670,7 @@ static int atmel_spi_transfer(struct spi
dev_dbg(controller, "new message %p submitted for %s\n",
msg, spi->dev.bus_id);
- if (unlikely(list_empty(&msg->transfers)
- || !spi->max_speed_hz))
+ if (unlikely(list_empty(&msg->transfers)))
return -EINVAL;
if (as->stopping)
_
Patches currently in -mm which might be from stf_xl@xxxxx are
origin.patch
arm-at91-fix-nr_aic_irqs-undeclared.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
