From: Tharun Kumar P tharunkumar.pasumarthi@microchip.com
[ 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@microchip.com Link: https://lore.kernel.org/r/20230404171613.1336093-2-tharunkumar.pasumarthi@mi... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 +