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spi: stm32: fix accidential revert to byte-sized transfer splitting

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Commit 6f486556ab ("spi: stm32: renaming of spi_master into
spi_controller") included an accidential reverted of a change added in
commit 1e49291125 ("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: 6f486556ab ("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>
This commit is contained in:
Leonard Göhrs 2023-08-16 16:52:37 +02:00 committed by Mark Brown
parent 2ccdd1b13c
commit 715dc9a1f0
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 3 deletions
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6
drivers/spi/spi-stm32.c
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@ -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;
}