[PATCH v2 08/11] drm/xe: Remove driver side BAR release before resize

Ilpo Järvinen
2025-11-13T16:28:13Z

PCI core handles releasing device's resources and their rollback in
case of failure of a BAR resizing operation. Releasing resource prior
to calling pci_resize_resource() prevents PCI core from restoring the
BARs as they were.

Remove driver-side release of BARs from the xe driver.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
---
drivers/gpu/drm/xe/xe_vram.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_vram.c b/drivers/gpu/drm/xe/xe_vram.c
index 00dd027057df..5aacab9358a4 100644
--- a/drivers/gpu/drm/xe/xe_vram.c
+++ b/drivers/gpu/drm/xe/xe_vram.c
@@ -33,9 +33,6 @@ _resize_bar(struct xe_device *xe, int resno, resource_size_t size)
int bar_size = pci_rebar_bytes_to_size(size);
int ret;

- if (pci_resource_len(pdev, resno))
- pci_release_resource(pdev, resno);
-
ret = pci_resize_resource(pdev, resno, bar_size, 0);
if (ret) {
drm_info(&xe->drm, "Failed to resize BAR%d to %dM (%pe). Consider enabling 'Resizable BAR' support in your BIOS\n",
--
2.39.5