[PATCH 4.19 07/54] drm/bochs: downgrade pci_request_region failure from error to warning

From: Greg Kroah-Hartman
Date: Sat Apr 11 2020 - 08:15:13 EST


From: Gerd Hoffmann <kraxel@xxxxxxxxxx>

[ Upstream commit 8c34cd1a7f089dc03933289c5d4a4d1489549828 ]

Shutdown of firmware framebuffer has a bunch of problems. Because
of this the framebuffer region might still be reserved even after
drm_fb_helper_remove_conflicting_pci_framebuffers() returned.

Don't consider pci_request_region() failure for the framebuffer
region as fatal error to workaround this issue.

Reported-by: Marek Marczykowski-GÃrecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20200313084152.2734-1-kraxel@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/bochs/bochs_hw.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c
index a39b0343c197d..401c218567af9 100644
--- a/drivers/gpu/drm/bochs/bochs_hw.c
+++ b/drivers/gpu/drm/bochs/bochs_hw.c
@@ -97,10 +97,8 @@ int bochs_hw_init(struct drm_device *dev, uint32_t flags)
size = min(size, mem);
}

- if (pci_request_region(pdev, 0, "bochs-drm") != 0) {
- DRM_ERROR("Cannot request framebuffer\n");
- return -EBUSY;
- }
+ if (pci_request_region(pdev, 0, "bochs-drm") != 0)
+ DRM_WARN("Cannot request framebuffer, boot fb still active?\n");

bochs->fb_map = ioremap(addr, size);
if (bochs->fb_map == NULL) {
--
2.20.1