From: Tharun Kumar P <tharunkumar.pasumarthi@xxxxxxxxxxxxx>
[ Upstream commit 35c8c5e503a82e0a4bf251d32096211eba8c2be6 ]
In pci1xxxx_spi_transfer_one API, length of SPI transaction gets cleared
by setting of length mask. Set length of transaction only after masking
length field.
Fixes: 1cc0cbea7167 ("spi: microchip: pci1xxxx: Add driver for SPI controller of PCI1XXXX PCIe switch")
Signed-off-by: Tharun Kumar P <tharunkumar.pasumarthi@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230404171613.1336093-2-tharunkumar.pasumarthi@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/spi/spi-pci1xxxx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-pci1xxxx.c b/drivers/spi/spi-pci1xxxx.c
index a31c3b612a430..0805c441b4065 100644
--- a/drivers/spi/spi-pci1xxxx.c
+++ b/drivers/spi/spi-pci1xxxx.c
@@ -199,8 +199,9 @@ static int pci1xxxx_spi_transfer_one(struct spi_controller *spi_ctlr,
else
regval &= ~SPI_MST_CTL_MODE_SEL;
- regval |= ((clkdiv << 5) | SPI_FORCE_CE | (len << 8));
+ regval |= ((clkdiv << 5) | SPI_FORCE_CE);
regval &= ~SPI_MST_CTL_CMD_LEN_MASK;
+ regval |= (len << 8);
writel(regval, par->reg_base +
SPI_MST_CTL_REG_OFFSET(p->hw_inst));
regval = readl(par->reg_base +
--
2.39.2
