tiny-printf: Support assert()

[oweals/u-boot.git] / drivers / mtd / stm32_flash.c

diff --git a/drivers/mtd/stm32_flash.c b/drivers/mtd/stm32_flash.c
index 71f48543a3959dd49e5a36c3bf872210169bf8a9..e16b6cd674fc9684e989f07f50082a83f52ed8b2 100644 (file)
--- a/drivers/mtd/stm32_flash.c
+++ b/drivers/mtd/stm32_flash.c
@@ -137,6 +137,10 @@ int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
        /* To make things simple use byte writes only */
        for (i = 0; i < cnt; i++) {
                *(uchar *)(addr + i) = src[i];
+               /*  avoid re-ordering flash data write and busy status
+                *  check as flash memory space attributes are generally Normal
+                */
+               mb();
                while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY)
                        ;
        }