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Subject[PATCH] drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync
Date
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.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
---
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 35db79a168bf..df1a7eb73651 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 bbb0883e8ce6..62b5069122cc 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 c5d1dc9618a4..99ee60f8b604 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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