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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2021-12-16 14:47:38 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2021-12-16 14:48:27 +0100 |
| commit | 9758ff2fa240173e9a45613b07774b7a78b7653e (patch) | |
| tree | 44c1951f9fe4ded7f18d26ca677d006c0e191569 /drivers/video/fbdev/simplefb.c | |
| parent | 0b665d4af35837f0a0ae63135b84a3c187c1db3b (diff) | |
| parent | 244a36e50da05c33b860d20638ee4628017a5334 (diff) | |
Merge drm/drm-next into drm-misc-next
Backmerging for v5.16-rc5. Resolves a conflict between drm-misc-next
and drm-misc-fixes in the vc4 driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'drivers/video/fbdev/simplefb.c')
| -rw-r--r-- | drivers/video/fbdev/simplefb.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c index ee8b4412f7e4..57541887188b 100644 --- a/drivers/video/fbdev/simplefb.c +++ b/drivers/video/fbdev/simplefb.c @@ -407,6 +407,17 @@ static int simplefb_probe(struct platform_device *pdev) struct simplefb_par *par; struct resource *mem; + /* + * Generic drivers must not be registered if a framebuffer exists. + * If a native driver was probed, the display hardware was already + * taken and attempting to use the system framebuffer is dangerous. + */ + if (num_registered_fb > 0) { + dev_err(&pdev->dev, + "simplefb: a framebuffer is already registered\n"); + return -EINVAL; + } + if (fb_get_options("simplefb", NULL)) return -ENODEV; |