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drm/radeon: restore nomodeset operation (v2)

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When UMS was deprecated it removed support for nomodeset commandline
we really want this in distro land so we can debug stuff, everyone
should fallback to vesa correctly.

v2: oops -1 isn't used anymore, restore original behaviour
-1 is default, so we can boot with nomodeset on the command line,
then use radeon.modeset=1 to override it for debugging later.

Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2013-05-15 01:23:36 +00:00
parent b90ed1e931
commit e9ced8e040
1 changed files with 11 additions and 1 deletions
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12
drivers/gpu/drm/radeon/radeon_drv.c
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@ -147,7 +147,7 @@ static inline void radeon_unregister_atpx_handler(void) {}
#endif
int radeon_no_wb;
int radeon_modeset = 1;
int radeon_modeset = -1;
int radeon_dynclks = -1;
int radeon_r4xx_atom = 0;
int radeon_agpmode = 0;
@ -456,6 +456,16 @@ static struct pci_driver radeon_kms_pci_driver = {
static int __init radeon_init(void)
{
#ifdef CONFIG_VGA_CONSOLE
if (vgacon_text_force() && radeon_modeset == -1) {
DRM_INFO("VGACON disable radeon kernel modesetting.\n");
radeon_modeset = 0;
}
#endif
/* set to modesetting by default if not nomodeset */
if (radeon_modeset == -1)
radeon_modeset = 1;
if (radeon_modeset == 1) {
DRM_INFO("radeon kernel modesetting enabled.\n");
driver = &kms_driver;