spi: bcm63xx-hsspi: Endianness fix for ARM based SoC

HSSPI controller uses big endian for the opcode in the message to the
controller ping pong buffer. Use cpu_to_be16 to properly handle the
endianness for both big and little endian host.

Fixes: 142168eba9dc ("spi: bcm63xx-hsspi: add bcm63xx HSSPI driver")
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230207065826.285013-7-william.zhang@broadcom.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c
index 01d5acad4a1b09cd55c303fcfccc43e450b66d7a..a65a0ec67641dd5ffa1224dec6421f99a3203e51 100644 (file)
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -194,7 +194,7 @@ static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
                        tx += curr_step;
                }
 
-               __raw_writew(opcode | curr_step, bs->fifo);
+               __raw_writew((u16)cpu_to_be16(opcode | curr_step), bs->fifo);
 
                /* enable interrupt */
                __raw_writel(HSSPI_PINGx_CMD_DONE(0),