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authorBenjamin Gaignard <benjamin.gaignard@collabora.com>2022-01-31 17:17:08 +0300
committerMark Brown <broonie@kernel.org>2022-01-31 18:24:05 +0300
commitf83a96e5f033fbbd21764705cb9c04234b96218e (patch)
tree0dd94d6f1aa9e6eee6ecd861f77ed98f0c681c3f /drivers/spi/spi-mt65xx.c
parent60b1e97140a487608b7cbde774b3cff1b5a99c00 (diff)
downloadlinux-f83a96e5f033fbbd21764705cb9c04234b96218e.tar.xz
spi: mediatek: Avoid NULL pointer crash in interrupt
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@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-mt65xx.c')
-rw-r--r--drivers/spi/spi-mt65xx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index a15de10ee286..753bd313e6fd 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -624,7 +624,7 @@ static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
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,