This is a note to let you know that I've just added the patch titled
spi: bcm63xx-hsspi: Endianness fix for ARM based SoC
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-bcm63xx-hsspi-endianness-fix-for-arm-based-soc.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e19b7cbc048e87c72124953619a3b2ea546472ce
Author: William Zhang <william.zhang@xxxxxxxxxxxx>
Date: Mon Feb 6 22:58:17 2023 -0800
spi: bcm63xx-hsspi: Endianness fix for ARM based SoC
[ Upstream commit 85a84a61699990db6a025b5073f337f49933a875 ]
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@xxxxxxxxxxxx>
Signed-off-by: William Zhang <william.zhang@xxxxxxxxxxxx>
Acked-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230207065826.285013-7-william.zhang@xxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c
index 2ad7b3f3666be..443a480767e09 100644
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -192,7 +192,7 @@ 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),
