From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
Aditya Pakki <pakki001@umn.edu>,
Alex Deucher <alexander.deucher@amd.com>,
Evan Quan <evan.quan@amd.com>
Subject: [PATCH AUTOSEL 5.7 10/60] drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync
Date: Mon, 10 Aug 2020 15:09:38 -0400 [thread overview]
Message-ID: <20200810191028.3793884-10-sashal@kernel.org> (raw)
In-Reply-To: <20200810191028.3793884-1-sashal@kernel.org>
From: Aditya Pakki <pakki001@umn.edu>
[ Upstream commit 9fb10671011143d15b6b40d6d5fa9c52c57e9d63 ]
On calling pm_runtime_get_sync() the reference count of the device
is incremented. In case of failure, decrement the
reference count before returning the error.
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/radeon/radeon_display.c | 4 +++-
drivers/gpu/drm/radeon/radeon_drv.c | 4 +++-
drivers/gpu/drm/radeon/radeon_kms.c | 4 +++-
3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 35db79a168bf7..df1a7eb736517 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -635,8 +635,10 @@ radeon_crtc_set_config(struct drm_mode_set *set,
dev = set->crtc->dev;
ret = pm_runtime_get_sync(dev->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_autosuspend(dev->dev);
return ret;
+ }
ret = drm_crtc_helper_set_config(set, ctx);
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 59f8186a24151..0cf0b00a0623e 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -549,8 +549,10 @@ long radeon_drm_ioctl(struct file *filp,
long ret;
dev = file_priv->minor->dev;
ret = pm_runtime_get_sync(dev->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_autosuspend(dev->dev);
return ret;
+ }
ret = drm_ioctl(filp, cmd, arg);
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 58176db85952c..779e4cd86245d 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -638,8 +638,10 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
file_priv->driver_priv = NULL;
r = pm_runtime_get_sync(dev->dev);
- if (r < 0)
+ if (r < 0) {
+ pm_runtime_put_autosuspend(dev->dev);
return r;
+ }
/* new gpu have virtual address space support */
if (rdev->family >= CHIP_CAYMAN) {
--
2.25.1
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next prev parent reply other threads:[~2020-08-10 19:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200810191028.3793884-1-sashal@kernel.org>
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 09/60] drm/amdgpu: avoid dereferencing a NULL pointer Sasha Levin
2020-08-10 19:09 ` Sasha Levin [this message]
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 28/60] drm/radeon: disable AGP by default Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 32/60] drm/amd/display: Improve DisplayPort monitor interop Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 33/60] drm/amdgpu/display bail early in dm_pp_get_static_clocks Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 34/60] drm/amdgpu/display: properly guard the calls to swSMU functions Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 35/60] drm/amd/powerplay: fix compile error with ARCH=arc Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 44/60] drm/amd/powerplay: suppress compile error around BUG_ON Sasha Levin
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