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 [thread overview]
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
next parent reply other threads:[~2019-07-19 4:40 UTC|newest]
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
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