diff mbox series

[v3,07/11] hw/sd/sdcard: Constify sd_crc*()'s message argument

Message ID 20200605102230.21493-8-philmd@redhat.com
State New
Headers show
Series hw/sd/sdcard: Fix CVE-2020-13253 & cleanups | expand

Commit Message

Philippe Mathieu-Daudé June 5, 2020, 10:22 a.m. UTC 
From: Philippe Mathieu-Daudé <f4bug@amsat.org>

CRC functions don't modify the buffer argument,
make it const.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/sd/sd.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 7799a3c621..9d51138b11 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -242,11 +242,11 @@  static const int sd_cmd_class[SDMMC_CMD_MAX] = {
     7,  7, 10,  7,  9,  9,  9,  8,  8, 10,  8,  8,  8,  8,  8,  8,
 };
 
-static uint8_t sd_crc7(void *message, size_t width)
+static uint8_t sd_crc7(const void *message, size_t width)
 {
     int i, bit;
     uint8_t shift_reg = 0x00;
-    uint8_t *msg = (uint8_t *) message;
+    const uint8_t *msg = (const uint8_t *)message;
 
     for (i = 0; i < width; i ++, msg ++)
         for (bit = 7; bit >= 0; bit --) {
@@ -258,11 +258,11 @@  static uint8_t sd_crc7(void *message, size_t width)
     return shift_reg;
 }
 
-static uint16_t sd_crc16(void *message, size_t width)
+static uint16_t sd_crc16(const void *message, size_t width)
 {
     int i, bit;
     uint16_t shift_reg = 0x0000;
-    uint16_t *msg = (uint16_t *) message;
+    const uint16_t *msg = (const uint16_t *)message;
     width <<= 1;
 
     for (i = 0; i < width; i ++, msg ++)