[PATCH v2 23/37] drm/gma500: Add support for the nomodeset kernel parameter

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According to disable Documentation/admin-guide/kernel-parameters.txt, this
parameter can be used to disable kernel modesetting.

DRM drivers will not perform display-mode changes or accelerated rendering
and only the system framebuffer will be available if it was set-up.

But only a few DRM drivers currently check for nomodeset, make this driver
to also support the command line parameter.

Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
---

(no changes since v1)

 drivers/gpu/drm/gma500/psb_drv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 65cf1c79dd7c..eeb681be9c95 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -538,6 +538,9 @@ static struct pci_driver psb_pci_driver = {
 
 static int __init psb_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	return pci_register_driver(&psb_pci_driver);
 }
 
-- 
2.33.1




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