[PATCH 1/2] drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()

[Xiongfeng Wang]

As comment of pci_get_class() says, it returns a pci_device with its
refcount increased and decreased the refcount for the input parameter
@from if it is not NULL.

If we break the loop in radeon_atrm_get_bios() with 'pdev' not NULL, we
need to call pci_dev_put() to decrease the refcount. Add the missing
pci_dev_put() to avoid refcount leak.

Fixes: d8ade3526b2a ("drm/radeon: handle non-VGA class pci devices with ATRM")
Fixes: c61e2775873f ("drm/radeon: split ATRM support out from the ATPX handler (v3)")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2 at huawei.com>
---
 drivers/gpu/drm/radeon/radeon_bios.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 33121655d50b..2df6ce3e32cb 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -227,6 +227,7 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
 
 	if (!found)
 		return false;
+	pci_dev_put(pdev);
 
 	rdev->bios = kmalloc(size, GFP_KERNEL);
 	if (!rdev->bios) {
-- 
2.20.1