From: Benjamin Gaignard benjamin.gaignard@collabora.com
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@collabora.com Link: https://lore.kernel.org/r/20220131141708.888710-1-benjamin.gaignard@collabor... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -540,7 +540,7 @@ 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,