diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-29 21:24:36 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-30 21:04:54 -0400 |
| commit | 244ca2b4d0b5e500681e52ad9e6d7f3f2b9362a1 (patch) | |
| tree | be33e7733271215a9b8c37d0916d5501ed5363f5 | |
| parent | fd657170c039a918c0b46f51db8005317d4c83fa (diff) | |
| download | op-kernel-dev-244ca2b4d0b5e500681e52ad9e6d7f3f2b9362a1.zip op-kernel-dev-244ca2b4d0b5e500681e52ad9e6d7f3f2b9362a1.tar.gz | |
i810: switch to vm_mmap()
Weirdness around do_mmap() in there does not rely on ->mmap_sem for
exclusion, so no need to keep it under that. As the result, we can
turn that do_mmap() into vm_mmap().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | drivers/gpu/drm/i810/i810_dma.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index f920fb5..fa94391 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -130,11 +130,10 @@ static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv) return -EINVAL; /* This is all entirely broken */ - down_write(¤t->mm->mmap_sem); old_fops = file_priv->filp->f_op; file_priv->filp->f_op = &i810_buffer_fops; dev_priv->mmap_buffer = buf; - buf_priv->virtual = (void *)do_mmap(file_priv->filp, 0, buf->total, + buf_priv->virtual = (void *)vm_mmap(file_priv->filp, 0, buf->total, PROT_READ | PROT_WRITE, MAP_SHARED, buf->bus_address); dev_priv->mmap_buffer = NULL; @@ -145,7 +144,6 @@ static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv) retcode = PTR_ERR(buf_priv->virtual); buf_priv->virtual = NULL; } - up_write(¤t->mm->mmap_sem); return retcode; } |
