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drm/vkms: Avoid assigning 0 for possible_crtc

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When vkms invoke drm_universal_plane_init(), it sets 0 for
possible_crtcs parameter which means that planes can't be attached to
any CRTC. It currently works due to some safeguard in the drm_crtc file;
however, it is possible to identify the problem by trying to append a
second connector. This patch fixes this issue by modifying
vkms_plane_init() to accept an index parameter which makes the code a
little bit more flexible and avoid set zero to possible_crtcs.

Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/d67849c62a8d8ace1a0af455998b588798a4c45f.1561491964.git.rodrigosiqueiramelo@gmail.com
This commit is contained in:
Rodrigo Siqueira
2019-06-25 22:36:18 -03:00
parent 4f5368b554
commit e9d85f731d
4 changed files with 8 additions and 8 deletions
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4
drivers/gpu/drm/vkms/vkms_drv.h
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@@ -115,10 +115,10 @@ bool vkms_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
int *max_error, ktime_t *vblank_time,
bool in_vblank_irq);
int vkms_output_init(struct vkms_device *vkmsdev);
int vkms_output_init(struct vkms_device *vkmsdev, int index);
struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev,
enum drm_plane_type type);
enum drm_plane_type type, int index);
/* Gem stuff */
struct drm_gem_object *vkms_gem_create(struct drm_device *dev,