gallium/auxiliary: 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 <eocallaghan@alterapraxis.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>

23 files changed, 35 insertions, 35 deletions

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index ee009c1..16a261c 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -72,7 +72,7 @@ draw_create_context(struct pipe_context *pipe, void *context,
                     boolean try_llvm)
 {
    struct draw_context *draw = CALLOC_STRUCT( draw_context );
-   if (draw == NULL)
+   if (!draw)
       goto err_out;
 
    /* we need correct cpu caps for disabling denorms in draw_vbo() */
diff --git a/src/gallium/auxiliary/draw/draw_gs.c b/src/gallium/auxiliary/draw/draw_gs.c
index c827a68..6b33341 100644
--- a/src/gallium/auxiliary/draw/draw_gs.c
+++ b/src/gallium/auxiliary/draw/draw_gs.c
@@ -734,7 +734,7 @@ draw_create_geometry_shader(struct draw_context *draw,
    if (use_llvm) {
       llvm_gs = CALLOC_STRUCT(llvm_geometry_shader);
 
-      if (llvm_gs == NULL)
+      if (!llvm_gs)
          return NULL;
 
       gs = &llvm_gs->base;
diff --git a/src/gallium/auxiliary/draw/draw_llvm.c b/src/gallium/auxiliary/draw/draw_llvm.c
index 8435991..ee97424 100644
--- a/src/gallium/auxiliary/draw/draw_llvm.c
+++ b/src/gallium/auxiliary/draw/draw_llvm.c
@@ -551,7 +551,7 @@ draw_llvm_create_variant(struct draw_llvm *llvm,
    variant = MALLOC(sizeof *variant +
                     shader->variant_key_size -
                     sizeof variant->key);
-   if (variant == NULL)
+   if (!variant)
       return NULL;
 
    variant->llvm = llvm;
@@ -2224,7 +2224,7 @@ draw_gs_llvm_create_variant(struct draw_llvm *llvm,
    variant = MALLOC(sizeof *variant +
                     shader->variant_key_size -
                     sizeof variant->key);
-   if (variant == NULL)
+   if (!variant)
       return NULL;
 
    variant->llvm = llvm;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_aaline.c b/src/gallium/auxiliary/draw/draw_pipe_aaline.c
index 85d24b7..337fb0f 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_aaline.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_aaline.c
@@ -429,7 +429,7 @@ aaline_create_texture(struct aaline_stage *aaline)
                                 PIPE_TRANSFER_WRITE,
                                 &box, &transfer);
 
-      if (data == NULL)
+      if (!data)
          return FALSE;
 
       for (i = 0; i < size; i++) {
@@ -774,7 +774,7 @@ static struct aaline_stage *
 draw_aaline_stage(struct draw_context *draw)
 {
    struct aaline_stage *aaline = CALLOC_STRUCT(aaline_stage);
-   if (aaline == NULL)
+   if (!aaline)
       return NULL;
 
    aaline->stage.draw = draw;
@@ -824,12 +824,12 @@ aaline_create_fs_state(struct pipe_context *pipe,
    struct aaline_stage *aaline = aaline_stage_from_pipe(pipe);
    struct aaline_fragment_shader *aafs = NULL;
 
-   if (aaline == NULL)
+   if (!aaline)
       return NULL;
 
    aafs = CALLOC_STRUCT(aaline_fragment_shader);
 
-   if (aafs == NULL)
+   if (!aafs)
       return NULL;
 
    aafs->state.tokens = tgsi_dup_tokens(fs->tokens);
@@ -847,7 +847,7 @@ aaline_bind_fs_state(struct pipe_context *pipe, void *fs)
    struct aaline_stage *aaline = aaline_stage_from_pipe(pipe);
    struct aaline_fragment_shader *aafs = (struct aaline_fragment_shader *) fs;
 
-   if (aaline == NULL) {
+   if (!aaline) {
       return;
    }
 
@@ -864,11 +864,11 @@ aaline_delete_fs_state(struct pipe_context *pipe, void *fs)
    struct aaline_stage *aaline = aaline_stage_from_pipe(pipe);
    struct aaline_fragment_shader *aafs = (struct aaline_fragment_shader *) fs;
 
-   if (aafs == NULL) {
+   if (!aafs) {
       return;
    }
 
-   if (aaline != NULL) {
+   if (aaline) {
       /* pass-through */
       aaline->driver_delete_fs_state(pipe, aafs->driver_fs);
 
@@ -889,7 +889,7 @@ aaline_bind_sampler_states(struct pipe_context *pipe, unsigned shader,
 
    assert(start == 0);
 
-   if (aaline == NULL) {
+   if (!aaline) {
       return;
    }
 
@@ -912,7 +912,7 @@ aaline_set_sampler_views(struct pipe_context *pipe, unsigned shader,
    struct aaline_stage *aaline = aaline_stage_from_pipe(pipe);
    uint i;
 
-   if (aaline == NULL) {
+   if (!aaline) {
       return;
    }
 
diff --git a/src/gallium/auxiliary/draw/draw_pipe_aapoint.c b/src/gallium/auxiliary/draw/draw_pipe_aapoint.c
index 063e368..33ef8ec 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_aapoint.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_aapoint.c
@@ -662,7 +662,7 @@ static struct aapoint_stage *
 draw_aapoint_stage(struct draw_context *draw)
 {
    struct aapoint_stage *aapoint = CALLOC_STRUCT(aapoint_stage);
-   if (aapoint == NULL)
+   if (!aapoint)
       goto fail;
 
    aapoint->stage.draw = draw;
@@ -707,7 +707,7 @@ aapoint_create_fs_state(struct pipe_context *pipe,
 {
    struct aapoint_stage *aapoint = aapoint_stage_from_pipe(pipe);
    struct aapoint_fragment_shader *aafs = CALLOC_STRUCT(aapoint_fragment_shader);
-   if (aafs == NULL) 
+   if (!aafs)
       return NULL;
 
    aafs->state.tokens = tgsi_dup_tokens(fs->tokens);
@@ -767,7 +767,7 @@ draw_install_aapoint_stage(struct draw_context *draw,
     * Create / install AA point drawing / prim stage
     */
    aapoint = draw_aapoint_stage( draw );
-   if (aapoint == NULL)
+   if (!aapoint)
       return FALSE;
 
    /* save original driver functions */
diff --git a/src/gallium/auxiliary/draw/draw_pipe_clip.c b/src/gallium/auxiliary/draw/draw_pipe_clip.c
index f2b56b0..35e54f4 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_clip.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_clip.c
@@ -915,7 +915,7 @@ static void clip_destroy(struct draw_stage *stage)
 struct draw_stage *draw_clip_stage(struct draw_context *draw)
 {
    struct clip_stage *clipper = CALLOC_STRUCT(clip_stage);
-   if (clipper == NULL)
+   if (!clipper)
       goto fail;
 
    clipper->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_cull.c b/src/gallium/auxiliary/draw/draw_pipe_cull.c
index fc8293b..240f551 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_cull.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_cull.c
@@ -251,7 +251,7 @@ static void cull_destroy( struct draw_stage *stage )
 struct draw_stage *draw_cull_stage( struct draw_context *draw )
 {
    struct cull_stage *cull = CALLOC_STRUCT(cull_stage);
-   if (cull == NULL)
+   if (!cull)
       goto fail;
 
    cull->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_flatshade.c b/src/gallium/auxiliary/draw/draw_pipe_flatshade.c
index 0ea7408..cd285e6 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_flatshade.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_flatshade.c
@@ -309,7 +309,7 @@ static void flatshade_destroy( struct draw_stage *stage )
 struct draw_stage *draw_flatshade_stage( struct draw_context *draw )
 {
    struct flat_stage *flatshade = CALLOC_STRUCT(flat_stage);
-   if (flatshade == NULL)
+   if (!flatshade)
       goto fail;
 
    flatshade->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_offset.c b/src/gallium/auxiliary/draw/draw_pipe_offset.c
index 5e0d8ce..f58e32b 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_offset.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_offset.c
@@ -231,7 +231,7 @@ static void offset_destroy( struct draw_stage *stage )
 struct draw_stage *draw_offset_stage( struct draw_context *draw )
 {
    struct offset_stage *offset = CALLOC_STRUCT(offset_stage);
-   if (offset == NULL)
+   if (!offset)
       goto fail;
 
    offset->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_pstipple.c b/src/gallium/auxiliary/draw/draw_pipe_pstipple.c
index a51e91f..b58d753 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_pstipple.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_pstipple.c
@@ -577,7 +577,7 @@ static struct pstip_stage *
 draw_pstip_stage(struct draw_context *draw, struct pipe_context *pipe)
 {
    struct pstip_stage *pstip = CALLOC_STRUCT(pstip_stage);
-   if (pstip == NULL)
+   if (!pstip)
       goto fail;
 
    pstip->pipe = pipe;
@@ -742,7 +742,7 @@ draw_install_pstipple_stage(struct draw_context *draw,
     * Create / install pgon stipple drawing / prim stage
     */
    pstip = draw_pstip_stage( draw, pipe );
-   if (pstip == NULL)
+   if (!pstip)
       goto fail;
 
    draw->pipeline.pstipple = &pstip->stage;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_stipple.c b/src/gallium/auxiliary/draw/draw_pipe_stipple.c
index 381aa41..dcf05aa 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_stipple.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_stipple.c
@@ -235,7 +235,7 @@ stipple_destroy( struct draw_stage *stage )
 struct draw_stage *draw_stipple_stage( struct draw_context *draw )
 {
    struct stipple_stage *stipple = CALLOC_STRUCT(stipple_stage);
-   if (stipple == NULL)
+   if (!stipple)
       goto fail;
 
    stipple->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_twoside.c b/src/gallium/auxiliary/draw/draw_pipe_twoside.c
index 7f958d9..52d87c6 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_twoside.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_twoside.c
@@ -165,7 +165,7 @@ static void twoside_destroy( struct draw_stage *stage )
 struct draw_stage *draw_twoside_stage( struct draw_context *draw )
 {
    struct twoside_stage *twoside = CALLOC_STRUCT(twoside_stage);
-   if (twoside == NULL)
+   if (!twoside)
       goto fail;
 
    twoside->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_unfilled.c b/src/gallium/auxiliary/draw/draw_pipe_unfilled.c
index 8e6435c..2517d61 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_unfilled.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_unfilled.c
@@ -255,7 +255,7 @@ draw_unfilled_prepare_outputs( struct draw_context *draw,
 struct draw_stage *draw_unfilled_stage( struct draw_context *draw )
 {
    struct unfilled_stage *unfilled = CALLOC_STRUCT(unfilled_stage);
-   if (unfilled == NULL)
+   if (!unfilled)
       goto fail;
 
    unfilled->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_util.c b/src/gallium/auxiliary/draw/draw_pipe_util.c
index cb8c732..53a42a6 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_util.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_util.c
@@ -78,7 +78,7 @@ boolean draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr )
       unsigned i;
       ubyte *store = (ubyte *) MALLOC( MAX_VERTEX_SIZE * nr );
 
-      if (store == NULL)
+      if (!store)
          return FALSE;
 
       stage->tmp = (struct vertex_header **) MALLOC( sizeof(struct vertex_header *) * nr );
diff --git a/src/gallium/auxiliary/draw/draw_pipe_validate.c b/src/gallium/auxiliary/draw/draw_pipe_validate.c
index e69d84a..01d0759 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_validate.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_validate.c
@@ -326,7 +326,7 @@ static void validate_destroy( struct draw_stage *stage )
 struct draw_stage *draw_validate_stage( struct draw_context *draw )
 {
    struct draw_stage *stage = CALLOC_STRUCT(draw_stage);
-   if (stage == NULL)
+   if (!stage)
       return NULL;
 
    stage->draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_vbuf.c b/src/gallium/auxiliary/draw/draw_pipe_vbuf.c
index 5cc866d..f36706c 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_vbuf.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_vbuf.c
@@ -426,7 +426,7 @@ struct draw_stage *draw_vbuf_stage( struct draw_context *draw,
                                     struct vbuf_render *render )
 {
    struct vbuf_stage *vbuf = CALLOC_STRUCT(vbuf_stage);
-   if (vbuf == NULL)
+   if (!vbuf)
       goto fail;
    
    vbuf->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_line.c b/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
index 38ac11a..ae4a00e 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
@@ -202,7 +202,7 @@ static void wideline_destroy( struct draw_stage *stage )
 struct draw_stage *draw_wide_line_stage( struct draw_context *draw )
 {
    struct wideline_stage *wide = CALLOC_STRUCT(wideline_stage);
-   if (wide == NULL)
+   if (!wide)
       goto fail;
 
    wide->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
index 348b0e9..adb6120 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
@@ -315,7 +315,7 @@ static void widepoint_destroy( struct draw_stage *stage )
 struct draw_stage *draw_wide_point_stage( struct draw_context *draw )
 {
    struct widepoint_stage *wide = CALLOC_STRUCT(widepoint_stage);
-   if (wide == NULL)
+   if (!wide)
       goto fail;
 
    wide->stage.draw = draw;
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
index b6966a5..c7b224a 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
@@ -376,7 +376,7 @@ static void fetch_emit_destroy( struct draw_pt_middle_end *middle )
 struct draw_pt_middle_end *draw_pt_fetch_emit( struct draw_context *draw )
 {
    struct fetch_emit_middle_end *fetch_emit = CALLOC_STRUCT( fetch_emit_middle_end );
-   if (fetch_emit == NULL)
+   if (!fetch_emit)
       return NULL;
 
    fetch_emit->cache = translate_cache_create();
diff --git a/src/gallium/auxiliary/draw/draw_vs.c b/src/gallium/auxiliary/draw/draw_vs.c
index 1501942..438c9a6 100644
--- a/src/gallium/auxiliary/draw/draw_vs.c
+++ b/src/gallium/auxiliary/draw/draw_vs.c
@@ -200,7 +200,7 @@ draw_vs_lookup_variant( struct draw_vertex_shader *vs,
    /* Else have to create a new one: 
     */
    variant = vs->create_variant( vs, key );
-   if (variant == NULL)
+   if (!variant)
       return NULL;
 
    /* Add it to our list, could be smarter: 
diff --git a/src/gallium/auxiliary/draw/draw_vs_exec.c b/src/gallium/auxiliary/draw/draw_vs_exec.c
index 17b54b6..abd64f5 100644
--- a/src/gallium/auxiliary/draw/draw_vs_exec.c
+++ b/src/gallium/auxiliary/draw/draw_vs_exec.c
@@ -225,7 +225,7 @@ draw_create_vs_exec(struct draw_context *draw,
 {
    struct exec_vertex_shader *vs = CALLOC_STRUCT( exec_vertex_shader );
 
-   if (vs == NULL) 
+   if (!vs)
       return NULL;
 
    /* we make a private copy of the tokens */
diff --git a/src/gallium/auxiliary/draw/draw_vs_llvm.c b/src/gallium/auxiliary/draw/draw_vs_llvm.c
index ac3999e..c92e431 100644
--- a/src/gallium/auxiliary/draw/draw_vs_llvm.c
+++ b/src/gallium/auxiliary/draw/draw_vs_llvm.c
@@ -86,7 +86,7 @@ draw_create_vs_llvm(struct draw_context *draw,
 {
    struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
 
-   if (vs == NULL)
+   if (!vs)
       return NULL;
 
    /* we make a private copy of the tokens */
diff --git a/src/gallium/auxiliary/draw/draw_vs_variant.c b/src/gallium/auxiliary/draw/draw_vs_variant.c
index ce3a608..af36a86 100644
--- a/src/gallium/auxiliary/draw/draw_vs_variant.c
+++ b/src/gallium/auxiliary/draw/draw_vs_variant.c
@@ -302,7 +302,7 @@ draw_vs_create_variant_generic( struct draw_vertex_shader *vs,
    struct translate_key fetch, emit;
 
    struct draw_vs_variant_generic *vsvg = CALLOC_STRUCT( draw_vs_variant_generic );
-   if (vsvg == NULL)
+   if (!vsvg)
       return NULL;
 
    vsvg->base.key = *key;