From bce7698e2e6565bb765bd0522337f29f5f312624 Mon Sep 17 00:00:00 2001 From: Haojie Li Date: Tue, 25 Aug 2026 18:08:45 +0800 Subject: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device platform_device_register_data() can fail and return an ERR_PTR, but the return value is used without checking, leading to an invalid pointer being stored in ddp_comp[].dev and passed to component_match_add() and mtk_ddp_comp_init(), which could result in a kernel crash. Add an IS_ERR() check to jump to the error handling path on failure. Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195") Cc: stable@vger.kernel.org Signed-off-by: Haojie Li Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/ Signed-off-by: Chun-Kuang Hu --- Documentation/admin-guide/aoe/udev-install.sh | 33 +++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/admin-guide/aoe/udev-install.sh (limited to 'Documentation/admin-guide/aoe/udev-install.sh') diff --git a/Documentation/admin-guide/aoe/udev-install.sh b/Documentation/admin-guide/aoe/udev-install.sh new file mode 100644 index 000000000..15e86f58c --- /dev/null +++ b/Documentation/admin-guide/aoe/udev-install.sh @@ -0,0 +1,33 @@ +# install the aoe-specific udev rules from udev.txt into +# the system's udev configuration +# + +me="`basename $0`" + +# find udev.conf, often /etc/udev/udev.conf +# (or environment can specify where to find udev.conf) +# +if test -z "$conf"; then + if test -r /etc/udev/udev.conf; then + conf=/etc/udev/udev.conf + else + conf="`find /etc -type f -name udev.conf 2> /dev/null`" + if test -z "$conf" || test ! -r "$conf"; then + echo "$me Error: no udev.conf found" 1>&2 + exit 1 + fi + fi +fi + +# find the directory where udev rules are stored, often +# /etc/udev/rules.d +# +rules_d="`sed -n '/^udev_rules=/{ s!udev_rules=!!; s!\"!!g; p; }' $conf`" +if test -z "$rules_d" ; then + rules_d=/etc/udev/rules.d +fi +if test ! -d "$rules_d"; then + echo "$me Error: cannot find udev rules directory" 1>&2 + exit 1 +fi +sh -xc "cp `dirname $0`/udev.txt $rules_d/60-aoe.rules" -- cgit v1.3.1