gallium/drivers: Sanitize NULL checks into canonical form

Use NULL tests of the form `if (ptr)' or `if (!ptr)'.
They do not depend on the definition of the symbol NULL.
Further, they provide the opportunity for the accidental
assignment, are clear and succinct.

Signed-off-by: Edward O'Callaghan <[email protected]>
Signed-off-by: Marek Olšák <[email protected]>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 1f9ae912d4f..b11cfeab17e 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -390,7 +390,7 @@ static void *r600_create_dsa_state(struct pipe_context *ctx,
 	unsigned db_depth_control, alpha_test_control, alpha_ref;
 	struct r600_dsa_state *dsa = CALLOC_STRUCT(r600_dsa_state);
 
-	if (dsa == NULL) {
+	if (!dsa) {
 		return NULL;
 	}
 
@@ -446,7 +446,7 @@ static void *r600_create_rs_state(struct pipe_context *ctx,
 	float psize_min, psize_max;
 	struct r600_rasterizer_state *rs = CALLOC_STRUCT(r600_rasterizer_state);
 
-	if (rs == NULL) {
+	if (!rs) {
 		return NULL;
 	}
 
@@ -559,7 +559,7 @@ static void *r600_create_sampler_state(struct pipe_context *ctx,
 	struct r600_pipe_sampler_state *ss = CALLOC_STRUCT(r600_pipe_sampler_state);
 	unsigned aniso_flag_offset = state->max_anisotropy > 1 ? 4 : 0;
 
-	if (ss == NULL) {
+	if (!ss) {
 		return NULL;
 	}
 
@@ -642,7 +642,7 @@ r600_create_sampler_view_custom(struct pipe_context *ctx,
 	unsigned char swizzle[4], array_mode = 0;
 	unsigned width, height, depth, offset_level, last_level;
 
-	if (view == NULL)
+	if (!view)
 		return NULL;
 
 	/* initialize base object */