From: Changhuang Liang <changhuang.liang@starfivetech.com> mainline inclusion from mainline-v6.12-rc4 commit 2cf59663660799ce16f4dfbed97cdceac7a7fa11 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB2BXH CVE: CVE-2024-50137 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- data->asserted will be NULL on JH7110 SoC since commit 82327b127d41 ("reset: starfive: Add StarFive JH7110 reset driver") was added. Add the judgment condition to avoid errors when calling reset_control_status on JH7110 SoC. Fixes: 82327b127d41 ("reset: starfive: Add StarFive JH7110 reset driver") Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> Acked-by: Hal Feng <hal.feng@starfivetech.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20240925112442.1732416-1-changhuang.liang@starfive... Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Zeng Heng <zengheng4@huawei.com> --- drivers/reset/starfive/reset-starfive-jh71x0.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/reset/starfive/reset-starfive-jh71x0.c b/drivers/reset/starfive/reset-starfive-jh71x0.c index 55bbbd2de52c..29ce3486752f 100644 --- a/drivers/reset/starfive/reset-starfive-jh71x0.c +++ b/drivers/reset/starfive/reset-starfive-jh71x0.c @@ -94,6 +94,9 @@ static int jh71x0_reset_status(struct reset_controller_dev *rcdev, void __iomem *reg_status = data->status + offset * sizeof(u32); u32 value = readl(reg_status); + if (!data->asserted) + return !(value & mask); + return !((value ^ data->asserted[offset]) & mask); } -- 2.25.1