diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2010-10-14 08:55:23 +0400 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-12-03 08:06:23 +0300 |
| commit | 9acc8100cb14b91d446a482fdd0cf7e3ccbcf930 (patch) | |
| tree | 4f3131913c01dd8895f7414e9835a0cd1253e432 /drivers | |
| parent | 6032649df9f456f379be8d51f64488cacbfa8317 (diff) | |
| download | linux-9acc8100cb14b91d446a482fdd0cf7e3ccbcf930.tar.xz | |
drm/nouveau: fallback to sw fbcon if we can't get mutex immediately
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_fbcon.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index bc30dbe11d00..0fce4eb914d5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -61,8 +61,8 @@ nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect) return; ret = -ENODEV; - if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED)) { - mutex_lock(&dev_priv->channel->mutex); + if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && + mutex_trylock(&dev_priv->channel->mutex)) { if (dev_priv->card_type < NV_50) ret = nv04_fbcon_fillrect(info, rect); else @@ -91,8 +91,8 @@ nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image) return; ret = -ENODEV; - if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED)) { - mutex_lock(&dev_priv->channel->mutex); + if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && + mutex_trylock(&dev_priv->channel->mutex)) { if (dev_priv->card_type < NV_50) ret = nv04_fbcon_copyarea(info, image); else @@ -121,8 +121,8 @@ nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image) return; ret = -ENODEV; - if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED)) { - mutex_lock(&dev_priv->channel->mutex); + if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) && + mutex_trylock(&dev_priv->channel->mutex)) { if (dev_priv->card_type < NV_50) ret = nv04_fbcon_imageblit(info, image); else @@ -153,7 +153,9 @@ nouveau_fbcon_sync(struct fb_info *info) info->flags & FBINFO_HWACCEL_DISABLED) return 0; - mutex_lock(&chan->mutex); + if (!mutex_trylock(&chan->mutex)) + return 0; + ret = RING_SPACE(chan, 4); if (ret) { mutex_unlock(&chan->mutex); |