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firmware: google: framebuffer: Do not mark framebuffer as busy

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commit f3850d399de3b6142b02315227ef9e772ed0c302 upstream.

Remove the flag IORESOURCE_BUSY flag from coreboot's framebuffer
resource. It prevents simpledrm from successfully requesting the
range for its own use; resulting in errors such as

[    2.775430] simple-framebuffer simple-framebuffer.0: [drm] could not acquire memory region [mem 0x80000000-0x80407fff flags 0x80000200]

As with other uses of simple-framebuffer, the simple-framebuffer
device should only declare it's I/O resources, but not actively use
them.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 851b4c1453 ("firmware: coreboot: Add coreboot framebuffer driver")
Acked-by: Tzung-Bi Shih <tzungbi@kernel.org>
Acked-by: Julius Werner <jwerner@chromium.org>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tzung-Bi Shih <tzungbi@kernel.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Julius Werner <jwerner@chromium.org>
Cc: chrome-platform@lists.linux.dev
Cc: <stable@vger.kernel.org> # v4.18+
Link: https://patch.msgid.link/20260217155836.96267-3-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>
This commit is contained in:
Thomas Zimmermann
2026-02-17 16:56:12 +01:00
committed by Ulrich Hecht
parent 14cd633917
commit d3eb2ae8a8
1 changed files with 1 additions and 1 deletions
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drivers/firmware/google/framebuffer-coreboot.c
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@ -58,7 +58,7 @@ static int framebuffer_probe(struct coreboot_device *dev)
return -ENODEV;
memset(&res, 0, sizeof(res));
res.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res.flags = IORESOURCE_MEM;
res.name = "Coreboot Framebuffer";
res.start = fb->physical_address;
length = PAGE_ALIGN(fb->y_resolution * fb->bytes_per_line);