summaryrefslogtreecommitdiff
path: root/drivers/spi
diff options
context:
space:
mode:
authorYang Yingliang <yangyingliang@huawei.com>2022-05-05 12:39:54 +0300
committerMark Brown <broonie@kernel.org>2022-05-09 14:48:47 +0300
commita2b331ac11e1cac56f5b7d367e9f3c5796deaaed (patch)
tree086ae7f073a7279532a6e0240ef9f1a26936c096 /drivers/spi
parent2cd757e6292e23b898791d71978c6edf60a251ad (diff)
downloadlinux-a2b331ac11e1cac56f5b7d367e9f3c5796deaaed.tar.xz
spi: spi-fsl-qspi: check return value after calling platform_get_resource_byname()
It will cause null-ptr-deref if platform_get_resource_byname() returns NULL, we need check the return value. Fixes: 858e26a515c2 ("spi: spi-fsl-qspi: Reduce devm_ioremap size to 4 times AHB buffer size") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20220505093954.1285615-1-yangyingliang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-fsl-qspi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c
index 9851551ebbe0..46ae46a944c5 100644
--- a/drivers/spi/spi-fsl-qspi.c
+++ b/drivers/spi/spi-fsl-qspi.c
@@ -876,6 +876,10 @@ static int fsl_qspi_probe(struct platform_device *pdev)
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"QuadSPI-memory");
+ if (!res) {
+ ret = -EINVAL;
+ goto err_put_ctrl;
+ }
q->memmap_phy = res->start;
/* Since there are 4 cs, map size required is 4 times ahb_buf_size */
q->ahb_addr = devm_ioremap(dev, q->memmap_phy,