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drm/vmwgfx/vmwgfx_drv: Fix an error path in vmw_setup_pci_resources() 

The devm_memremap() function never returns NULL, it returns error
pointers so the test needs to be fixed.  Also we need to call
pci_release_regions() to avoid a memory leak.

Fixes: be4f77ac68 ("drm/vmwgfx: Cleanup fifo mmio handling")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YA6FMboLhnE3uSvb@mwanda
(cherry picked from commit f3ebd4e6b6)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Dan Carpenter 2021-01-25 11:45:37 +03:00 committed by Maarten Lankhorst
parent 6ff92deff7
commit 78e4ba40f1
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
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@ -668,9 +668,10 @@ static int vmw_setup_pci_resources(struct vmw_private *dev,
fifo_size,
MEMREMAP_WB);
if (unlikely(dev->fifo_mem == NULL)) {
if (IS_ERR(dev->fifo_mem)) {
DRM_ERROR("Failed mapping FIFO memory.\n");
return -ENOMEM;
pci_release_regions(pdev);
return PTR_ERR(dev->fifo_mem);
}
/*