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| author | Maxim Kochetkov <fido_max@inbox.ru> | 2020-12-01 09:59:16 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-12-01 13:17:13 +0100 |
| commit | 2c2b3ad2c4c801bab1eec7264ea6991b1e4e8f2c (patch) | |
| tree | a7e89f9f074c5aaa278d59f49f81382c7e57dfe2 /drivers/spi | |
| parent | spi: fsl: fix use of spisel_boot signal on MPC8309 (diff) | |
| download | linux-2c2b3ad2c4c801bab1eec7264ea6991b1e4e8f2c.tar.xz linux-2c2b3ad2c4c801bab1eec7264ea6991b1e4e8f2c.zip | |
spi: spi-fsl-dspi: Use max_native_cs instead of num_chipselect to set SPI_MCR
If cs-gpios property is used in devicetree then ctlr->num_chipselect value
may be changed by spi_get_gpio_descs().
So use ctlr->max_native_cs instead of ctlr->num_chipselect to set SPI_MCR
Fixes: 4fcc7c2292de (spi: spi-fsl-dspi: Don't access reserved fields in SPI_MCR)
Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Link: https://lore.kernel.org/r/20201201085916.63543-1-fido_max@inbox.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-dspi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 1a08c1d584ab..028736687488 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -1165,7 +1165,7 @@ static int dspi_init(struct fsl_dspi *dspi) unsigned int mcr; /* Set idle states for all chip select signals to high */ - mcr = SPI_MCR_PCSIS(GENMASK(dspi->ctlr->num_chipselect - 1, 0)); + mcr = SPI_MCR_PCSIS(GENMASK(dspi->ctlr->max_native_cs - 1, 0)); if (dspi->devtype_data->trans_mode == DSPI_XSPI_MODE) mcr |= SPI_MCR_XSPI; @@ -1250,7 +1250,7 @@ static int dspi_probe(struct platform_device *pdev) pdata = dev_get_platdata(&pdev->dev); if (pdata) { - ctlr->num_chipselect = pdata->cs_num; + ctlr->num_chipselect = ctlr->max_native_cs = pdata->cs_num; ctlr->bus_num = pdata->bus_num; /* Only Coldfire uses platform data */ @@ -1263,7 +1263,7 @@ static int dspi_probe(struct platform_device *pdev) dev_err(&pdev->dev, "can't get spi-num-chipselects\n"); goto out_ctlr_put; } - ctlr->num_chipselect = cs_num; + ctlr->num_chipselect = ctlr->max_native_cs = cs_num; of_property_read_u32(np, "bus-num", &bus_num); ctlr->bus_num = bus_num; |