From e1d9ec3af3463c1721723f68403ee14214d0d2f6 Mon Sep 17 00:00:00 2001
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Date: Wed, 17 Jun 2020 17:10:39 -0500
Subject: [PATCH] fpga: dfl: Use struct_size() in kzalloc()
Git-commit: e1d9ec3af3463c1721723f68403ee14214d0d2f6
References: jsc#SLE-13441
Patch-mainline: v5.9-rc1
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes. Also, remove unnecessary
function dfl_feature_platform_data_size().
This code was detected with the help of Coccinelle and, audited and
fixed manually.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/fpga/dfl.c | 3 +--
drivers/fpga/dfl.h | 6 ------
2 files changed, 1 insertion(+), 8 deletions(-)
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index 990994874bf1..2dd13e036d45 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -487,8 +487,7 @@ static int build_info_commit_dev(struct build_feature_devs_info *binfo)
* it will be automatically freed by device's release() callback,
* platform_device_release().
*/
- pdata = kzalloc(dfl_feature_platform_data_size(binfo->feature_num),
- GFP_KERNEL);
+ pdata = kzalloc(struct_size(pdata, features, binfo->feature_num), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h
index 2f5d3052e36e..044b0e88e5a8 100644
--- a/drivers/fpga/dfl.h
+++ b/drivers/fpga/dfl.h
@@ -299,12 +299,6 @@ struct dfl_feature_ops {
#define DFL_FPGA_FEATURE_DEV_FME "dfl-fme"
#define DFL_FPGA_FEATURE_DEV_PORT "dfl-port"
-static inline int dfl_feature_platform_data_size(const int num)
-{
- return sizeof(struct dfl_feature_platform_data) +
- num * sizeof(struct dfl_feature);
-}
-
void dfl_fpga_dev_feature_uinit(struct platform_device *pdev);
int dfl_fpga_dev_feature_init(struct platform_device *pdev,
struct dfl_feature_driver *feature_drvs);
--
2.26.2