[PATCH 1/4] intel: Unconditionally clear ioctl structs
Daniel Vetter
daniel.vetter at ffwll.ch
Wed Feb 11 03:42:45 PST 2015
We really have to do this to avoid surprises when extending the ABI
later on. Especially when growing the structures.
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
intel/intel_bufmgr_gem.c | 68 ++++++++++++++++++++++++------------------------
1 file changed, 34 insertions(+), 34 deletions(-)
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index cf85bb8ae0bf..78875fd329f2 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -74,7 +74,7 @@
#define VG(x)
#endif
-#define VG_CLEAR(s) VG(memset(&s, 0, sizeof(s)))
+#define memclear(s) memset(&s, 0, sizeof(s))
#define DBG(...) do { \
if (bufmgr_gem->bufmgr.debug) \
@@ -593,7 +593,7 @@ drm_intel_gem_bo_busy(drm_intel_bo *bo)
if (bo_gem->reusable && bo_gem->idle)
return false;
- VG_CLEAR(busy);
+ memclear(busy);
busy.handle = bo_gem->gem_handle;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
@@ -612,7 +612,7 @@ drm_intel_gem_bo_madvise_internal(drm_intel_bufmgr_gem *bufmgr_gem,
{
struct drm_i915_gem_madvise madv;
- VG_CLEAR(madv);
+ memclear(madv);
madv.handle = bo_gem->gem_handle;
madv.madv = state;
madv.retained = 1;
@@ -741,7 +741,7 @@ retry:
bo_gem->bo.size = bo_size;
- VG_CLEAR(create);
+ memclear(create);
create.size = bo_size;
ret = drmIoctl(bufmgr_gem->fd,
@@ -888,7 +888,7 @@ drm_intel_gem_bo_alloc_userptr(drm_intel_bufmgr *bufmgr,
bo_gem->bo.size = size;
- VG_CLEAR(userptr);
+ memclear(userptr);
userptr.user_ptr = (__u64)((unsigned long)addr);
userptr.user_size = size;
userptr.flags = flags;
@@ -972,7 +972,7 @@ drm_intel_bo_gem_create_from_name(drm_intel_bufmgr *bufmgr,
}
}
- VG_CLEAR(open_arg);
+ memclear(open_arg);
open_arg.name = handle;
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_GEM_OPEN,
@@ -1017,7 +1017,7 @@ drm_intel_bo_gem_create_from_name(drm_intel_bufmgr *bufmgr,
bo_gem->global_name = handle;
bo_gem->reusable = false;
- VG_CLEAR(get_tiling);
+ memclear(get_tiling);
get_tiling.handle = bo_gem->gem_handle;
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_I915_GEM_GET_TILING,
@@ -1060,7 +1060,7 @@ drm_intel_gem_bo_free(drm_intel_bo *bo)
}
/* Close this object */
- VG_CLEAR(close);
+ memclear(close);
close.handle = bo_gem->gem_handle;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close);
if (ret != 0) {
@@ -1292,9 +1292,8 @@ static int drm_intel_gem_bo_map(drm_intel_bo *bo, int write_enable)
DBG("bo_map: %d (%s), map_count=%d\n",
bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
- VG_CLEAR(mmap_arg);
+ memclear(mmap_arg);
mmap_arg.handle = bo_gem->gem_handle;
- mmap_arg.offset = 0;
mmap_arg.size = bo->size;
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_I915_GEM_MMAP,
@@ -1316,7 +1315,7 @@ static int drm_intel_gem_bo_map(drm_intel_bo *bo, int write_enable)
bo_gem->mem_virtual);
bo->virtual = bo_gem->mem_virtual;
- VG_CLEAR(set_domain);
+ memclear(set_domain);
set_domain.handle = bo_gem->gem_handle;
set_domain.read_domains = I915_GEM_DOMAIN_CPU;
if (write_enable)
@@ -1362,7 +1361,7 @@ map_gtt(drm_intel_bo *bo)
DBG("bo_map_gtt: mmap %d (%s), map_count=%d\n",
bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
- VG_CLEAR(mmap_arg);
+ memclear(mmap_arg);
mmap_arg.handle = bo_gem->gem_handle;
/* Get the fake offset back... */
@@ -1430,7 +1429,7 @@ drm_intel_gem_bo_map_gtt(drm_intel_bo *bo)
* tell it when we're about to use things if we had done
* rendering and it still happens to be bound to the GTT.
*/
- VG_CLEAR(set_domain);
+ memclear(set_domain);
set_domain.handle = bo_gem->gem_handle;
set_domain.read_domains = I915_GEM_DOMAIN_GTT;
set_domain.write_domain = I915_GEM_DOMAIN_GTT;
@@ -1529,7 +1528,7 @@ static int drm_intel_gem_bo_unmap(drm_intel_bo *bo)
* Unlike GTT set domains, this only does work if the
* buffer should be scanout-related.
*/
- VG_CLEAR(sw_finish);
+ memclear(sw_finish);
sw_finish.handle = bo_gem->gem_handle;
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_I915_GEM_SW_FINISH,
@@ -1571,7 +1570,7 @@ drm_intel_gem_bo_subdata(drm_intel_bo *bo, unsigned long offset,
if (bo_gem->is_userptr)
return -EINVAL;
- VG_CLEAR(pwrite);
+ memclear(pwrite);
pwrite.handle = bo_gem->gem_handle;
pwrite.offset = offset;
pwrite.size = size;
@@ -1596,7 +1595,7 @@ drm_intel_gem_get_pipe_from_crtc_id(drm_intel_bufmgr *bufmgr, int crtc_id)
struct drm_i915_get_pipe_from_crtc_id get_pipe_from_crtc_id;
int ret;
- VG_CLEAR(get_pipe_from_crtc_id);
+ memclear(get_pipe_from_crtc_id);
get_pipe_from_crtc_id.crtc_id = crtc_id;
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID,
@@ -1626,7 +1625,7 @@ drm_intel_gem_bo_get_subdata(drm_intel_bo *bo, unsigned long offset,
if (bo_gem->is_userptr)
return -EINVAL;
- VG_CLEAR(pread);
+ memclear(pread);
pread.handle = bo_gem->gem_handle;
pread.offset = offset;
pread.size = size;
@@ -1694,9 +1693,9 @@ drm_intel_gem_bo_wait(drm_intel_bo *bo, int64_t timeout_ns)
}
}
+ memclear(wait);
wait.bo_handle = bo_gem->gem_handle;
wait.timeout_ns = timeout_ns;
- wait.flags = 0;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_WAIT, &wait);
if (ret == -1)
return -errno;
@@ -1719,7 +1718,7 @@ drm_intel_gem_bo_start_gtt_access(drm_intel_bo *bo, int write_enable)
struct drm_i915_gem_set_domain set_domain;
int ret;
- VG_CLEAR(set_domain);
+ memclear(set_domain);
set_domain.handle = bo_gem->gem_handle;
set_domain.read_domains = I915_GEM_DOMAIN_GTT;
set_domain.write_domain = write_enable ? I915_GEM_DOMAIN_GTT : 0;
@@ -2339,7 +2338,7 @@ drm_intel_gem_bo_exec(drm_intel_bo *bo, int used,
*/
drm_intel_add_validate_buffer(bo);
- VG_CLEAR(execbuf);
+ memclear(execbuf);
execbuf.buffers_ptr = (uintptr_t) bufmgr_gem->exec_objects;
execbuf.buffer_count = bufmgr_gem->exec_count;
execbuf.batch_start_offset = 0;
@@ -2426,7 +2425,7 @@ do_exec2(drm_intel_bo *bo, int used, drm_intel_context *ctx,
*/
drm_intel_add_validate_buffer2(bo, 0);
- VG_CLEAR(execbuf);
+ memclear(execbuf);
execbuf.buffers_ptr = (uintptr_t)bufmgr_gem->exec2_objects;
execbuf.buffer_count = bufmgr_gem->exec_count;
execbuf.batch_start_offset = 0;
@@ -2517,7 +2516,7 @@ drm_intel_gem_bo_pin(drm_intel_bo *bo, uint32_t alignment)
struct drm_i915_gem_pin pin;
int ret;
- VG_CLEAR(pin);
+ memclear(pin);
pin.handle = bo_gem->gem_handle;
pin.alignment = alignment;
@@ -2540,7 +2539,7 @@ drm_intel_gem_bo_unpin(drm_intel_bo *bo)
struct drm_i915_gem_unpin unpin;
int ret;
- VG_CLEAR(unpin);
+ memclear(unpin);
unpin.handle = bo_gem->gem_handle;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_UNPIN, &unpin);
@@ -2696,7 +2695,7 @@ drm_intel_bo_gem_create_from_prime(drm_intel_bufmgr *bufmgr, int prime_fd, int s
DRMLISTADDTAIL(&bo_gem->name_list, &bufmgr_gem->named);
pthread_mutex_unlock(&bufmgr_gem->lock);
- VG_CLEAR(get_tiling);
+ memclear(get_tiling);
get_tiling.handle = bo_gem->gem_handle;
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_I915_GEM_GET_TILING,
@@ -2743,7 +2742,7 @@ drm_intel_gem_bo_flink(drm_intel_bo *bo, uint32_t * name)
if (!bo_gem->global_name) {
struct drm_gem_flink flink;
- VG_CLEAR(flink);
+ memclear(flink);
flink.handle = bo_gem->gem_handle;
pthread_mutex_lock(&bufmgr_gem->lock);
@@ -3078,7 +3077,7 @@ static int
get_pci_device_id(drm_intel_bufmgr_gem *bufmgr_gem)
{
char *devid_override;
- int devid;
+ int devid = 0;
int ret;
drm_i915_getparam_t gp;
@@ -3090,8 +3089,7 @@ get_pci_device_id(drm_intel_bufmgr_gem *bufmgr_gem)
}
}
- VG_CLEAR(devid);
- VG_CLEAR(gp);
+ memclear(gp);
gp.param = I915_PARAM_CHIPSET_ID;
gp.value = &devid;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
@@ -3204,7 +3202,7 @@ drm_intel_gem_context_create(drm_intel_bufmgr *bufmgr)
if (!context)
return NULL;
- VG_CLEAR(create);
+ memclear(create);
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create);
if (ret != 0) {
DBG("DRM_IOCTL_I915_GEM_CONTEXT_CREATE failed: %s\n",
@@ -3229,7 +3227,7 @@ drm_intel_gem_context_destroy(drm_intel_context *ctx)
if (ctx == NULL)
return;
- VG_CLEAR(destroy);
+ memclear(destroy);
bufmgr_gem = (drm_intel_bufmgr_gem *)ctx->bufmgr;
destroy.ctx_id = ctx->ctx_id;
@@ -3255,7 +3253,7 @@ drm_intel_get_reset_stats(drm_intel_context *ctx,
if (ctx == NULL)
return -EINVAL;
- memset(&stats, 0, sizeof(stats));
+ memclear(stats);
bufmgr_gem = (drm_intel_bufmgr_gem *)ctx->bufmgr;
stats.ctx_id = ctx->ctx_id;
@@ -3285,7 +3283,7 @@ drm_intel_reg_read(drm_intel_bufmgr *bufmgr,
struct drm_i915_reg_read reg_read;
int ret;
- VG_CLEAR(reg_read);
+ memclear(reg_read);
reg_read.offset = offset;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_REG_READ, ®_read);
@@ -3390,7 +3388,7 @@ has_userptr(drm_intel_bufmgr_gem *bufmgr_gem)
return false;
}
- memset(&userptr, 0, sizeof(userptr));
+ memclear(userptr);
userptr.user_ptr = (__u64)(unsigned long)ptr;
userptr.user_size = pgsz;
@@ -3405,6 +3403,7 @@ retry:
return false;
}
+ memclear(close_bo);
close_bo.handle = userptr.handle;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close_bo);
free(ptr);
@@ -3451,6 +3450,7 @@ drm_intel_bufmgr_gem_init(int fd, int batch_size)
goto exit;
}
+ memclear(aperture);
ret = drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_I915_GEM_GET_APERTURE,
&aperture);
@@ -3500,7 +3500,7 @@ drm_intel_bufmgr_gem_init(int fd, int batch_size)
bufmgr_gem->gtt_size -= 256*1024*1024;
}
- VG_CLEAR(gp);
+ memclear(gp);
gp.value = &tmp;
gp.param = I915_PARAM_HAS_EXECBUF2;
--
2.1.4
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