treewide: Replace kmalloc with kmalloc_obj for non-scalar types

This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>

3 files changed, 19 insertions, 22 deletions

diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index a71df052cf25..33a7627191f8 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -933,7 +933,7 @@ static bool build_regamma(struct pwl_float_data_ex *rgb_regamma,
 	struct pwl_float_data_ex *rgb = rgb_regamma;
 	const struct hw_x_point *coord_x = coordinate_x;
 
-	coeff = kvzalloc(sizeof(*coeff), GFP_KERNEL);
+	coeff = kvzalloc_obj(*coeff, GFP_KERNEL);
 	if (!coeff)
 		goto release;
 
@@ -1714,14 +1714,15 @@ bool mod_color_calculate_degamma_params(struct dc_color_caps *dc_caps,
 	input_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
 
 	if (map_user_ramp && ramp && ramp->type == GAMMA_RGB_256) {
-		rgb_user = kvcalloc(ramp->num_entries + _EXTRA_POINTS,
-				sizeof(*rgb_user),
-				GFP_KERNEL);
+		rgb_user = kvzalloc_objs(*rgb_user,
+					 ramp->num_entries + _EXTRA_POINTS,
+					 GFP_KERNEL);
 		if (!rgb_user)
 			goto rgb_user_alloc_fail;
 
-		axis_x = kvcalloc(ramp->num_entries + _EXTRA_POINTS, sizeof(*axis_x),
-				GFP_KERNEL);
+		axis_x = kvzalloc_objs(*axis_x,
+				       ramp->num_entries + _EXTRA_POINTS,
+				       GFP_KERNEL);
 		if (!axis_x)
 			goto axis_x_alloc_fail;
 
@@ -1737,13 +1738,11 @@ bool mod_color_calculate_degamma_params(struct dc_color_caps *dc_caps,
 		scale_gamma(rgb_user, ramp, dividers);
 	}
 
-	curve = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS, sizeof(*curve),
-			GFP_KERNEL);
+	curve = kvzalloc_objs(*curve, MAX_HW_POINTS + _EXTRA_POINTS, GFP_KERNEL);
 	if (!curve)
 		goto curve_alloc_fail;
 
-	coeff = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS, sizeof(*coeff),
-			GFP_KERNEL);
+	coeff = kvzalloc_objs(*coeff, MAX_HW_POINTS + _EXTRA_POINTS, GFP_KERNEL);
 	if (!coeff)
 		goto coeff_alloc_fail;
 
@@ -1940,14 +1939,14 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
 
 	if (ramp && ramp->type != GAMMA_CS_TFM_1D &&
 	    (map_user_ramp || ramp->type != GAMMA_RGB_256)) {
-		rgb_user = kvcalloc(ramp->num_entries + _EXTRA_POINTS,
-			    sizeof(*rgb_user),
-			    GFP_KERNEL);
+		rgb_user = kvzalloc_objs(*rgb_user,
+					 ramp->num_entries + _EXTRA_POINTS,
+					 GFP_KERNEL);
 		if (!rgb_user)
 			goto rgb_user_alloc_fail;
 
-		axis_x = kvcalloc(ramp->num_entries + 3, sizeof(*axis_x),
-				GFP_KERNEL);
+		axis_x = kvzalloc_objs(*axis_x, ramp->num_entries + 3,
+				       GFP_KERNEL);
 		if (!axis_x)
 			goto axis_x_alloc_fail;
 
@@ -1966,14 +1965,12 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
 			scale_gamma_dx(rgb_user, ramp, dividers);
 	}
 
-	rgb_regamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
-			       sizeof(*rgb_regamma),
-			       GFP_KERNEL);
+	rgb_regamma = kvzalloc_objs(*rgb_regamma, MAX_HW_POINTS + _EXTRA_POINTS,
+				    GFP_KERNEL);
 	if (!rgb_regamma)
 		goto rgb_regamma_alloc_fail;
 
-	coeff = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS, sizeof(*coeff),
-			 GFP_KERNEL);
+	coeff = kvzalloc_objs(*coeff, MAX_HW_POINTS + _EXTRA_POINTS, GFP_KERNEL);
 	if (!coeff)
 		goto coeff_alloc_fail;
 
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index 1aae46d703ba..b819610021f2 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -61,7 +61,7 @@ struct core_freesync {
 struct mod_freesync *mod_freesync_create(struct dc *dc)
 {
 	struct core_freesync *core_freesync =
-			kzalloc(sizeof(struct core_freesync), GFP_KERNEL);
+			kzalloc_obj(struct core_freesync, GFP_KERNEL);
 
 	if (core_freesync == NULL)
 		goto fail_alloc_context;
diff --git a/drivers/gpu/drm/amd/display/modules/vmid/vmid.c b/drivers/gpu/drm/amd/display/modules/vmid/vmid.c
index 2c40212d86da..ccd35d1f05ec 100644
--- a/drivers/gpu/drm/amd/display/modules/vmid/vmid.c
+++ b/drivers/gpu/drm/amd/display/modules/vmid/vmid.c
@@ -144,7 +144,7 @@ struct mod_vmid *mod_vmid_create(
 	if (dc == NULL)
 		goto fail_dc_null;
 
-	core_vmid = kzalloc(sizeof(struct core_vmid), GFP_KERNEL);
+	core_vmid = kzalloc_obj(struct core_vmid, GFP_KERNEL);
 
 	if (core_vmid == NULL)
 		goto fail_alloc_context;