From 11f94f5b1d3001314fb0f7d1739c74482fbba960 Mon Sep 17 00:00:00 2001
From: Pedro Pontes <pontescpedro@gmail.com>
Date: Thu, 16 Apr 2026 10:42:15 -0300
Subject: [PATCH] media: atomisp: use kmalloc_objs for array allocations

Convert manual kmalloc() multiplications to the modern kmalloc_objs()
interface to improve type safety and prevent potential integer
overflows.

Signed-off-by: Pedro Pontes <pontescpedro@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/staging/media/atomisp/pci/sh_css.c | 57 ++++++++++++----------
 1 file changed, 30 insertions(+), 27 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/sh_css.c b/drivers/staging/media/atomisp/pci/sh_css.c
index c136c1745eb9..00082276f1db 100644
--- a/drivers/staging/media/atomisp/pci/sh_css.c
+++ b/drivers/staging/media/atomisp/pci/sh_css.c
@@ -5819,36 +5819,37 @@ static int ia_css_pipe_create_cas_scaler_desc_single_output(
 		i *= max_scale_factor_per_stage;
 	}
 
-	descr->in_info = kmalloc(descr->num_stage *
-				 sizeof(struct ia_css_frame_info),
-				 GFP_KERNEL);
+	descr->in_info = kmalloc_objs(*descr->in_info,
+				      descr->num_stage,
+				      GFP_KERNEL);
 	if (!descr->in_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->internal_out_info = kmalloc(descr->num_stage *
-					   sizeof(struct ia_css_frame_info),
-					   GFP_KERNEL);
+	descr->internal_out_info = kmalloc_objs(*descr->internal_out_info,
+						descr->num_stage,
+						GFP_KERNEL);
 	if (!descr->internal_out_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->out_info = kmalloc(descr->num_stage *
-				  sizeof(struct ia_css_frame_info),
-				  GFP_KERNEL);
+	descr->out_info = kmalloc_objs(*descr->out_info,
+				       descr->num_stage,
+				       GFP_KERNEL);
 	if (!descr->out_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->vf_info = kmalloc(descr->num_stage *
-				 sizeof(struct ia_css_frame_info),
-				 GFP_KERNEL);
+	descr->vf_info = kmalloc_objs(*descr->vf_info,
+				      descr->num_stage,
+				      GFP_KERNEL);
 	if (!descr->vf_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->is_output_stage = kmalloc(descr->num_stage * sizeof(bool),
-					 GFP_KERNEL);
+	descr->is_output_stage = kmalloc_objs(*descr->is_output_stage,
+					      descr->num_stage,
+					      GFP_KERNEL);
 	if (!descr->is_output_stage) {
 		err = -ENOMEM;
 		goto ERR;
@@ -5968,35 +5969,37 @@ ia_css_pipe_create_cas_scaler_desc(struct ia_css_pipe *pipe,
 
 	descr->num_stage = num_stages;
 
-	descr->in_info = kmalloc_objs(struct ia_css_frame_info,
-				      descr->num_stage);
+	descr->in_info = kmalloc_objs(*descr->in_info,
+				      descr->num_stage,
+				      GFP_KERNEL);
 	if (!descr->in_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->internal_out_info = kmalloc(descr->num_stage *
-					   sizeof(struct ia_css_frame_info),
-					   GFP_KERNEL);
+	descr->internal_out_info = kmalloc_objs(*descr->internal_out_info,
+						descr->num_stage,
+						GFP_KERNEL);
 	if (!descr->internal_out_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->out_info = kmalloc(descr->num_stage *
-				  sizeof(struct ia_css_frame_info),
-				  GFP_KERNEL);
+	descr->out_info = kmalloc_objs(*descr->out_info,
+				       descr->num_stage,
+				       GFP_KERNEL);
 	if (!descr->out_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->vf_info = kmalloc(descr->num_stage *
-				 sizeof(struct ia_css_frame_info),
-				 GFP_KERNEL);
+	descr->vf_info = kmalloc_objs(*descr->vf_info,
+				      descr->num_stage,
+				      GFP_KERNEL);
 	if (!descr->vf_info) {
 		err = -ENOMEM;
 		goto ERR;
 	}
-	descr->is_output_stage = kmalloc(descr->num_stage * sizeof(bool),
-					 GFP_KERNEL);
+	descr->is_output_stage = kmalloc_objs(*descr->is_output_stage,
+					      descr->num_stage,
+					      GFP_KERNEL);
 	if (!descr->is_output_stage) {
 		err = -ENOMEM;
 		goto ERR;