linux-kernel - [PATCH] staging: rts5208: Assign array

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Date:   Fri, 10 Jul 2020 13:33:50 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] staging: rts5208: Assign array_size() to a variable

Assign array_size() to variable _size_ and use it in multiple places.

This issue was found with the help of Coccinelle and, audited and fixed
manually.

Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/staging/rts5208/rtsx_chip.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_chip.c b/drivers/staging/rts5208/rtsx_chip.c
index c6f9375468eb..ee9ddc4eb94d 100644
--- a/drivers/staging/rts5208/rtsx_chip.c
+++ b/drivers/staging/rts5208/rtsx_chip.c
@@ -1440,6 +1440,7 @@ int rtsx_write_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf,
 	u16 aligned_addr = addr - offset;
 	int dw_len, i, j;
 	int retval;
+	size_t size;
 
 	if (!buf)
 		return STATUS_NOMEM;
@@ -1451,11 +1452,12 @@ int rtsx_write_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf,
 
 	dev_dbg(rtsx_dev(chip), "dw_len = %d\n", dw_len);
 
-	data = vzalloc(array_size(dw_len, 4));
+	size = array_size(dw_len, 4);
+	data = vzalloc(size);
 	if (!data)
 		return STATUS_NOMEM;
 
-	mask = vzalloc(array_size(dw_len, 4));
+	mask = vzalloc(size);
 	if (!mask) {
 		vfree(data);
 		return STATUS_NOMEM;
@@ -1471,10 +1473,8 @@ int rtsx_write_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf,
 		}
 	}
 
-	print_hex_dump_bytes(KBUILD_MODNAME ": ", DUMP_PREFIX_NONE, mask,
-			     dw_len * 4);
-	print_hex_dump_bytes(KBUILD_MODNAME ": ", DUMP_PREFIX_NONE, data,
-			     dw_len * 4);
+	print_hex_dump_bytes(KBUILD_MODNAME ": ", DUMP_PREFIX_NONE, mask, size);
+	print_hex_dump_bytes(KBUILD_MODNAME ": ", DUMP_PREFIX_NONE, data, size);
 
 	for (i = 0; i < dw_len; i++) {
 		retval = rtsx_write_cfg_dw(chip, func, aligned_addr + i * 4,
-- 
2.27.0