diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-10-09 16:59:13 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-10-09 16:59:13 +0300 |
| commit | 8986bbc0ce83c1df4c314c9c04d30608cacae98b (patch) | |
| tree | 7bd8244de924630341976588137cbdef9302f89f /lib | |
| parent | 9792e7b58095dc03e63c105c494308ed771168f6 (diff) | |
lib: Document that gem_mmap__{cpu,gtt,wc} return NULL on failure
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Stochastically-reviwewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ioctl_wrappers.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c index 80e1ec6e..eb745bc0 100644 --- a/lib/ioctl_wrappers.c +++ b/lib/ioctl_wrappers.c @@ -456,7 +456,7 @@ void gem_execbuf(int fd, struct drm_i915_gem_execbuffer2 *execbuf) * This functions wraps up procedure to establish a memory mapping through the * GTT. * - * Returns: A pointer to the created memory mapping. + * Returns: A pointer to the created memory mapping, NULL on failure. */ void *gem_mmap__gtt(int fd, uint32_t handle, uint64_t size, unsigned prot) { @@ -535,7 +535,7 @@ bool gem_mmap__has_wc(int fd) * bypassing the GTT system agent (i.e. there is no automatic tiling of * the mmapping through the fence registers). * - * Returns: A pointer to the created memory mapping. + * Returns: A pointer to the created memory mapping, NULL on failure. */ void *gem_mmap__wc(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot) { @@ -569,7 +569,7 @@ void *gem_mmap__wc(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsi * This functions wraps up procedure to establish a memory mapping through * direct cpu access, bypassing the gpu completely. * - * Returns: A pointer to the created memory mapping. + * Returns: A pointer to the created memory mapping, NULL on failure. */ void *gem_mmap__cpu(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot) { |