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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2021-04-14 01:05:08 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-13 18:19:11 -0400 |
| commit | d510c88cfbb294d2b1e2d0b71576e9b79d0e2e83 (patch) | |
| tree | adf2b84e3a4cf7e60702a09bacb38ee1151ad0d4 /drivers | |
| parent | 6a3608eae6d33a478a29348eb5e9ca330a528ae6 (diff) | |
| download | linux-stable-d510c88cfbb294d2b1e2d0b71576e9b79d0e2e83.tar.gz linux-stable-d510c88cfbb294d2b1e2d0b71576e9b79d0e2e83.tar.bz2 linux-stable-d510c88cfbb294d2b1e2d0b71576e9b79d0e2e83.zip | |
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: a6c0fd3d5a8b ("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
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fbdev/efifb.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index f58a545b3bf3..8ea8f079cde2 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c @@ -575,7 +575,8 @@ static int efifb_probe(struct platform_device *dev) goto err_fb_dealoc; } fb_info(info, "%s frame buffer device\n", info->fix.id); - pm_runtime_get_sync(&efifb_pci_dev->dev); + if (efifb_pci_dev) + pm_runtime_get_sync(&efifb_pci_dev->dev); return 0; err_fb_dealoc: @@ -602,7 +603,8 @@ static int efifb_remove(struct platform_device *pdev) unregister_framebuffer(info); sysfs_remove_groups(&pdev->dev.kobj, efifb_groups); framebuffer_release(info); - pm_runtime_put(&efifb_pci_dev->dev); + if (efifb_pci_dev) + pm_runtime_put(&efifb_pci_dev->dev); return 0; } |