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| author |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-08-10 18:52:38 +0200 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2016-08-26 05:11:35 +1000 |
| commit | 2b721f20770ccbca4d3dad58e1bd44aa570efb3f (patch) | |
| tree | 8e96afa8e0d0bb616c2d58f71e2fef53e0d81a34 /drivers/gpu/drm/udl/udl_fb.c | |
| parent | Merge branch 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-fixes (diff) | |
| download | linux-dev-2b721f20770ccbca4d3dad58e1bd44aa570efb3f.tar.xz linux-dev-2b721f20770ccbca4d3dad58e1bd44aa570efb3f.zip | |
drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION
For reasons that entirely elude me fb.h exposes all the structures,
even when it is not enabled. Except for special stuff like fb_defio.
Which means all the drivers which haven't yet switched over to the
defio support in the helpers and still roll their own, will fail
to compile when fbdev emulation is disabled. Protect just those
bits, as a gnarly reminder that conversion to the core defio helpers
would be good.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1470847958-28465-6-git-send-email-daniel.vetter@ffwll.ch
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_fb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index d5df555aeba0..9688bfa92ccd 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -203,6 +203,7 @@ static int udl_fb_open(struct fb_info *info, int user) ufbdev->fb_count++; +#ifdef CONFIG_DRM_FBDEV_EMULATION if (fb_defio && (info->fbdefio == NULL)) { /* enable defio at last moment if not disabled by client */ @@ -218,6 +219,7 @@ static int udl_fb_open(struct fb_info *info, int user) info->fbdefio = fbdefio; fb_deferred_io_init(info); } +#endif pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n", info->node, user, info, ufbdev->fb_count); @@ -235,12 +237,14 @@ static int udl_fb_release(struct fb_info *info, int user) ufbdev->fb_count--; +#ifdef CONFIG_DRM_FBDEV_EMULATION if ((ufbdev->fb_count == 0) && (info->fbdefio)) { fb_deferred_io_cleanup(info); kfree(info->fbdefio); info->fbdefio = NULL; info->fbops->fb_mmap = udl_fb_mmap; } +#endif pr_warn("released /dev/fb%d user=%d count=%d\n", info->node, user, ufbdev->fb_count); |