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spi: fsl: Fix driver breakage when SPI_CS_HIGH is not set in spi->mode 

Commit 766c6b63aa ("spi: fix client driver breakages when using GPIO
descriptors") broke fsl spi driver.

As now we fully rely on gpiolib for handling the polarity of
chip selects, the driver shall not alter the GPIO value anymore
when SPI_CS_HIGH is not set in spi->mode.

Fixes: 766c6b63aa ("spi: fix client driver breakages when using GPIO descriptors")
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/6b51cc2bfbca70d3e9b9da7b7aa4c7a9d793ca0e.1610629002.git.christophe.leroy@csgroup.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Christophe Leroy 2021-01-14 13:09:37 +00:00 committed by Mark Brown
parent 7c53f6b671
commit 7a2da5d796
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 3 deletions
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5
drivers/spi/spi-fsl-spi.c
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@ -115,14 +115,13 @@ static void fsl_spi_chipselect(struct spi_device *spi, int value)
{
struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master);
struct fsl_spi_platform_data *pdata;
bool pol = spi->mode & SPI_CS_HIGH;
struct spi_mpc8xxx_cs *cs = spi->controller_state;
pdata = spi->dev.parent->parent->platform_data;
if (value == BITBANG_CS_INACTIVE) {
if (pdata->cs_control)
pdata->cs_control(spi, !pol);
pdata->cs_control(spi, false);
}
if (value == BITBANG_CS_ACTIVE) {
@ -134,7 +133,7 @@ static void fsl_spi_chipselect(struct spi_device *spi, int value)
fsl_spi_change_mode(spi);
if (pdata->cs_control)
pdata->cs_control(spi, pol);
pdata->cs_control(spi, true);
}
}