mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 21:57:43 +00:00
efifb: Check efifb_pci_dev before using it
On some platforms like Hyper-V and RPi4 with UEFI firmware, efifb is not
a PCI device.
So make sure efifb_pci_dev is found before using it.
Fixes: a6c0fd3d5a
("efifb: Ensure graphics device for efifb stays at PCI D0")
BugLink: https://bugs.launchpad.net/bugs/1922403
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210413170508.968148-1-kai.heng.feng@canonical.com
This commit is contained in:
parent
6a3608eae6
commit
d510c88cfb
1 changed files with 4 additions and 2 deletions
|
@ -575,6 +575,7 @@ static int efifb_probe(struct platform_device *dev)
|
|||
goto err_fb_dealoc;
|
||||
}
|
||||
fb_info(info, "%s frame buffer device\n", info->fix.id);
|
||||
if (efifb_pci_dev)
|
||||
pm_runtime_get_sync(&efifb_pci_dev->dev);
|
||||
return 0;
|
||||
|
||||
|
@ -602,6 +603,7 @@ static int efifb_remove(struct platform_device *pdev)
|
|||
unregister_framebuffer(info);
|
||||
sysfs_remove_groups(&pdev->dev.kobj, efifb_groups);
|
||||
framebuffer_release(info);
|
||||
if (efifb_pci_dev)
|
||||
pm_runtime_put(&efifb_pci_dev->dev);
|
||||
|
||||
return 0;
|
||||
|
|
Loading…
Reference in a new issue