[PATCH] spi: rockchip: Signal unfinished DMA transfers
From: heiko@sntech.de (Heiko Stübner)
Date: 2016-06-08 12:27:08
Also in:
linux-rockchip, linux-spi, lkml
Am Mittwoch, 8. Juni 2016, 09:32:51 schrieb Tomeu Vizoso:
When using DMA, the transfer_one callback should return 1 because the
transfer hasn't finished yet.
A previous commit changed the function to return 0 when the DMA channels
were correctly prepared.
This manifested in Veyron boards with this message:
[ 1.983605] cros-ec-spi spi0.0: EC failed to respond in time
Signed-off-by: Tomeu Vizoso <redacted>
Fixes: ea9849113343 ("spi: rockchip: check return value of
dmaengine_prep_slave_sg")
Cc: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Javier Martinez Canillas <redacted>looks like Mark already applied it, but nevertheless I was able to verify that this patch fixes the issue on my veyron jerry chromebook as well, so Tested-by: Heiko Stuebner <heiko@sntech.de>