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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-07-07 12:35:33 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-07-07 12:35:33 +0100 |
commit | 06be5eefe1192eb8ce8d07497f67595b6bfe9741 (patch) | |
tree | 80f1987d4970f8079681f8be0c135cafc8d6329a /drivers/gpu/drm/omapdrm/omap_fb.c | |
parent | ARM: fix lockdep unannotated irqs-off warning (diff) | |
parent | ARM: avoid unwanted GCC memset()/memcpy() optimisations for IO variants (diff) | |
download | linux-dev-06be5eefe1192eb8ce8d07497f67595b6bfe9741.tar.xz linux-dev-06be5eefe1192eb8ce8d07497f67595b6bfe9741.zip |
Merge branches 'fixes' and 'ioremap' into for-linus
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_fb.c')
-rw-r--r-- | drivers/gpu/drm/omapdrm/omap_fb.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c index b2c1a29cc12b..0b967e76df1a 100644 --- a/drivers/gpu/drm/omapdrm/omap_fb.c +++ b/drivers/gpu/drm/omapdrm/omap_fb.c @@ -17,11 +17,11 @@ * this program. If not, see <http://www.gnu.org/licenses/>. */ -#include "omap_drv.h" -#include "omap_dmm_tiler.h" +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> -#include "drm_crtc.h" -#include "drm_crtc_helper.h" +#include "omap_dmm_tiler.h" +#include "omap_drv.h" /* * framebuffer funcs @@ -89,6 +89,8 @@ struct omap_framebuffer { int pin_count; const struct format *format; struct plane planes[4]; + /* lock for pinning (pin_count and planes.paddr) */ + struct mutex lock; }; static int omap_framebuffer_create_handle(struct drm_framebuffer *fb, @@ -250,8 +252,11 @@ int omap_framebuffer_pin(struct drm_framebuffer *fb) struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); int ret, i, n = drm_format_num_planes(fb->pixel_format); + mutex_lock(&omap_fb->lock); + if (omap_fb->pin_count > 0) { omap_fb->pin_count++; + mutex_unlock(&omap_fb->lock); return 0; } @@ -265,6 +270,8 @@ int omap_framebuffer_pin(struct drm_framebuffer *fb) omap_fb->pin_count++; + mutex_unlock(&omap_fb->lock); + return 0; fail: @@ -274,6 +281,8 @@ fail: plane->paddr = 0; } + mutex_unlock(&omap_fb->lock); + return ret; } @@ -283,10 +292,14 @@ int omap_framebuffer_unpin(struct drm_framebuffer *fb) struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); int ret, i, n = drm_format_num_planes(fb->pixel_format); + mutex_lock(&omap_fb->lock); + omap_fb->pin_count--; - if (omap_fb->pin_count > 0) + if (omap_fb->pin_count > 0) { + mutex_unlock(&omap_fb->lock); return 0; + } for (i = 0; i < n; i++) { struct plane *plane = &omap_fb->planes[i]; @@ -296,9 +309,12 @@ int omap_framebuffer_unpin(struct drm_framebuffer *fb) plane->paddr = 0; } + mutex_unlock(&omap_fb->lock); + return 0; fail: + mutex_unlock(&omap_fb->lock); return ret; } @@ -411,6 +427,7 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, fb = &omap_fb->base; omap_fb->format = format; + mutex_init(&omap_fb->lock); for (i = 0; i < n; i++) { struct plane *plane = &omap_fb->planes[i]; |