From: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx>
commit f83a96e5f033fbbd21764705cb9c04234b96218e upstream.
In some case, like after a transfer timeout, master->cur_msg pointer
is NULL which led to a kernel crash when trying to use master->cur_msg->spi.
mtk_spi_can_dma(), pointed by master->can_dma, doesn't use this parameter
avoid the problem by setting NULL as second parameter.
Fixes: a568231f46322 ("spi: mediatek: Add spi bus for Mediatek MT8173")
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220131141708.888710-1-benjamin.gaignard@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-mt65xx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -624,7 +624,7 @@ static irqreturn_t mtk_spi_interrupt(int
else
mdata->state = MTK_SPI_IDLE;
- if (!master->can_dma(master, master->cur_msg->spi, trans)) {
+ if (!master->can_dma(master, NULL, trans)) {
if (trans->rx_buf) {
cnt = mdata->xfer_len / 4;
ioread32_rep(mdata->base + SPI_RX_DATA_REG,
