[PATCH] stm32mp: fix array bounds checks

[Patrice Chotard]

Fix index check against array size. If that index is equal
to the array size, we'll access one-past-the-end of the array.

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---
 arch/arm/mach-stm32mp/stm32mp2/cpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-stm32mp/stm32mp2/cpu.c b/arch/arm/mach-stm32mp/stm32mp2/cpu.c
index e081dc605b8..a8a6bcf8ab4 100644
--- a/arch/arm/mach-stm32mp/stm32mp2/cpu.c
+++ b/arch/arm/mach-stm32mp/stm32mp2/cpu.c
@@ -148,7 +148,7 @@ static void setup_boot_mode(void)
 		  __func__, boot_ctx, boot_mode, instance, forced_mode);
 	switch (boot_mode & TAMP_BOOT_DEVICE_MASK) {
 	case BOOT_SERIAL_UART:
-		if (instance > ARRAY_SIZE(serial_addr))
+		if (instance >= ARRAY_SIZE(serial_addr))
 			break;
 		/* serial : search associated node in devicetree */
 		sprintf(cmd, "serial@%x", serial_addr[instance]);
@@ -178,7 +178,7 @@ static void setup_boot_mode(void)
 		break;
 	case BOOT_FLASH_SD:
 	case BOOT_FLASH_EMMC:
-		if (instance > ARRAY_SIZE(sdmmc_addr))
+		if (instance >= ARRAY_SIZE(sdmmc_addr))
 			break;
 		/* search associated sdmmc node in devicetree */
 		sprintf(cmd, "mmc@%x", sdmmc_addr[instance]);

---
base-commit: b99da05e1538b8fa153322da82917af2aa27e1d6
change-id: 20260210-upstream_stm32mp2_cpu_fix-bbbd24ba4f99

Best regards,
-- 
Patrice Chotard <patrice.chotard at foss.st.com>