From: Xiaomeng Tong <xiam0nd.tong@gmail.com>
To: patrik.r.jakobsson@gmail.com, airlied@linux.ie, daniel@ffwll.ch
Cc: Xiaomeng Tong <xiam0nd.tong@gmail.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH v3] drm/gma500: fix a potential repeat execution in psb_driver_load
Date: Wed, 13 Apr 2022 13:11:05 +0800 [thread overview]
Message-ID: <20220413051105.5612-1-xiam0nd.tong@gmail.com> (raw)
Instead of exiting the loop as expected when an entry is found, the
list_for_each_entry() continues until the traversal is complete. To
avoid potential executing 'ret = gma_backlight_init(dev);' repeatly,
goto outside the loop when found entry by replacing switch/case with
if statement.
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
---
changes since v2:
- replace switch with if statement (Patrik Jakobsson)
changes since v1:
- goto outside the loop (Xiaomeng Tong)
v2: https://lore.kernel.org/dri-devel/20220406113143.10699-1-xiam0nd.tong@gmail.com/
v1: https://lore.kernel.org/lkml/20220401115811.9656-1-xiam0nd.tong@gmail.com/
---
drivers/gpu/drm/gma500/psb_drv.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 2aff54d505e2..85211ec16e52 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -396,9 +396,8 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags)
drm_for_each_connector_iter(connector, &conn_iter) {
gma_encoder = gma_attached_encoder(connector);
- switch (gma_encoder->type) {
- case INTEL_OUTPUT_LVDS:
- case INTEL_OUTPUT_MIPI:
+ if (gma_encoder->type == INTEL_OUTPUT_LVDS ||
+ gma_encoder->type == INTEL_OUTPUT_MIPI) {
ret = gma_backlight_init(dev);
break;
}
--
2.17.1
next reply other threads:[~2022-04-13 5:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-13 5:11 Xiaomeng Tong [this message]
2022-04-20 7:34 ` [PATCH v3] drm/gma500: fix a potential repeat execution in psb_driver_load Patrik Jakobsson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220413051105.5612-1-xiam0nd.tong@gmail.com \
--to=xiam0nd.tong@gmail.com \
--cc=airlied@linux.ie \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=linux-kernel@vger.kernel.org \
--cc=patrik.r.jakobsson@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).