stuartl/linux-stable
1
0
Fork 0
mirror of https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable.git synced 2025-09-26 17:10:55 +10:00
Code Issues Releases Wiki Activity

spi: spi-fsl-lpspi: Reset FIFO and disable module on transfer abort

Browse Source 
[ Upstream commit e811b088a3 ]

In DMA mode fsl_lpspi_reset() is always called at the end, even when the
transfer is aborted. In PIO mode aborts skip the reset leaving the FIFO
filled and the module enabled.

Fix it by always calling fsl_lpspi_reset().

Fixes: a15dc3d657 ("spi: lpspi: Fix CLK pin becomes low before one transfer")
Signed-off-by: Larisa Grigore <larisa.grigore@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://patch.msgid.link/20250828-james-nxp-lpspi-v2-3-6262b9aa9be4@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Larisa Grigore 2025-08-28 11:14:42 +01:00 committed by Greg Kroah-Hartman
parent dfebae5fc6
commit 7b3d508b33
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/spi/spi-fsl-lpspi.c
View File

@ -705,12 +705,10 @@ static int fsl_lpspi_pio_transfer(struct spi_controller *controller,
fsl_lpspi_write_tx_fifo(fsl_lpspi);
ret = fsl_lpspi_wait_for_completion(controller);
if (ret)
return ret;
fsl_lpspi_reset(fsl_lpspi);
return 0;
return ret;
}
static int fsl_lpspi_transfer_one(struct spi_controller *controller,