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Update synopsys drivers to not rely on undefined overflow behaviour

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This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.

Change-Id: I54560fe290e7dc52d364d0fe1c81a16f4c8d9a7b
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
This commit is contained in:
Justin Chadwell 2019-07-03 14:14:46 +01:00
parent dc5baeb3c2
commit 9264f0876e
1 changed files with 3 additions and 2 deletions
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5
drivers/synopsys/emmc/dw_mmc.c
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@ -14,6 +14,7 @@
#include <drivers/delay_timer.h>
#include <drivers/mmc.h>
#include <drivers/synopsys/dw_mmc.h>
#include <lib/utils_def.h>
#include <lib/mmio.h>
#define DWMMC_CTRL (0x00)
@ -55,7 +56,7 @@
#define DWMMC_CMDARG (0x28)
#define DWMMC_CMD (0x2c)
#define CMD_START (1 << 31)
#define CMD_START (U(1) << 31)
#define CMD_USE_HOLD_REG (1 << 29) /* 0 if SDR50/100 */
#define CMD_UPDATE_CLK_ONLY (1 << 21)
#define CMD_SEND_INIT (1 << 15)
@ -100,7 +101,7 @@
#define IDMAC_DES0_CH (1 << 4)
#define IDMAC_DES0_ER (1 << 5)
#define IDMAC_DES0_CES (1 << 30)
#define IDMAC_DES0_OWN (1 << 31)
#define IDMAC_DES0_OWN (U(1) << 31)
#define IDMAC_DES1_BS1(x) ((x) & 0x1fff)
#define IDMAC_DES2_BS2(x) (((x) & 0x1fff) << 13)