Linux-ARM-MSM Archive on lore.kernel.org
 help / color / Atom feed
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sean Paul <seanpaul@chromium.org>,
	Jordan Crouse <jcrouse@codeaurora.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
	freedreno@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.2 016/171] drm/msm/a6xx: Check for ERR or NULL before iounmap
Date: Thu, 18 Jul 2019 23:54:07 -0400
Message-ID: <20190719035643.14300-16-sashal@kernel.org> (raw)
In-Reply-To: <20190719035643.14300-1-sashal@kernel.org>

From: Sean Paul <seanpaul@chromium.org>

[ Upstream commit 5ca4a094ba7e1369363dcbcbde8baf06ddcdc2d1 ]

pdcptr and seqptr aren't necessarily valid, check them before trying to
unmap them.

Changes in v2:
- None

Cc: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190523171653.138678-3-sean@poorly.run
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 38e2cfa9cec7..418bb08bbed7 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -504,8 +504,10 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu)
 	wmb();
 
 err:
-	devm_iounmap(gmu->dev, pdcptr);
-	devm_iounmap(gmu->dev, seqptr);
+	if (!IS_ERR_OR_NULL(pdcptr))
+		devm_iounmap(gmu->dev, pdcptr);
+	if (!IS_ERR_OR_NULL(seqptr))
+		devm_iounmap(gmu->dev, seqptr);
 }
 
 /*
-- 
2.20.1


       reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190719035643.14300-1-sashal@kernel.org>
2019-07-19  3:54 ` Sasha Levin [this message]
2019-07-19  3:54 ` [PATCH AUTOSEL 5.2 020/171] drm/msm/a6xx: Avoid freeing gmu resources multiple times Sasha Levin
2019-07-19  3:54 ` [PATCH AUTOSEL 5.2 049/171] tty: serial: msm_serial: avoid system lockup condition Sasha Levin
2019-07-19  3:55 ` [PATCH AUTOSEL 5.2 076/171] drm/msm/adreno: Ensure that the zap shader region is big enough Sasha Levin
2019-07-19  3:55 ` [PATCH AUTOSEL 5.2 078/171] drm/msm: Depopulate platform on probe failure Sasha Levin

Reply instructions:

You may reply publically 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=20190719035643.14300-16-sashal@kernel.org \
    --to=sashal@kernel.org \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=freedreno@lists.freedesktop.org \
    --cc=jcrouse@codeaurora.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=seanpaul@chromium.org \
    --cc=stable@vger.kernel.org \
    /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

Linux-ARM-MSM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-msm/0 linux-arm-msm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-msm linux-arm-msm/ https://lore.kernel.org/linux-arm-msm \
		linux-arm-msm@vger.kernel.org linux-arm-msm@archiver.kernel.org
	public-inbox-index linux-arm-msm


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-arm-msm


AGPL code for this site: git clone https://public-inbox.org/ public-inbox