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authorLeonard Göhrs <l.goehrs@pengutronix.de>2023-08-16 16:52:37 +0200
committerMark Brown <broonie@kernel.org>2023-08-21 13:09:56 +0100
commit715dc9a1f0c8ae0bbd4e5b37f9a165ea39e47fe9 (patch)
treeed91b93f50f4837a163607e992db692ee9a48ebd /drivers/spi/spi-stm32.c
parent2ccdd1b13c591d306f0401d98dedc4bdcd02b421 (diff)
spi: stm32: fix accidential revert to byte-sized transfer splitting
Commit 6f486556abe35 ("spi: stm32: renaming of spi_master into spi_controller") included an accidential reverted of a change added in commit 1e4929112507f ("spi: stm32: split large transfers based on word size instead of bytes"). This breaks large SPI transfers with word sizes > 8 bits, which are e.g. common when driving MIPI DBI displays. Fix this by using `spi_split_transfers_maxwords()` instead of `spi_split_transfers_maxsize()`. Fixes: 6f486556abe35 ("spi: stm32: renaming of spi_master into spi_controller") Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de> Link: https://lore.kernel.org/r/20230816145237.3159817-1-l.goehrs@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-stm32.c')
-rw-r--r--drivers/spi/spi-stm32.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index 6d10fa4ab783..7ddf9db776b0 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -1001,9 +1001,9 @@ static int stm32_spi_prepare_msg(struct spi_controller *ctrl,
if (spi->cfg->set_number_of_data) {
int ret;
- ret = spi_split_transfers_maxsize(ctrl, msg,
- STM32H7_SPI_TSIZE_MAX,
- GFP_KERNEL | GFP_DMA);
+ ret = spi_split_transfers_maxwords(ctrl, msg,
+ STM32H7_SPI_TSIZE_MAX,
+ GFP_KERNEL | GFP_DMA);
if (ret)
return ret;
}