env_sf: use DIV_ROUND_UP to calculate number of sectors to erase

simpler to read

Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@openedev.com>

diff --git a/common/env_sf.c b/common/env_sf.c
index 6a1583e..9944602 100644 (file)
--- a/common/env_sf.c
+++ b/common/env_sf.c
@@ -80,7 +80,7 @@ int saveenv(void)
 {
        env_t   env_new;
        char    *saved_buffer = NULL, flag = OBSOLETE_FLAG;
-       u32     saved_size, saved_offset, sector = 1;
+       u32     saved_size, saved_offset, sector;
        int     ret;
 
        ret = setup_flash_device();
@@ -115,11 +115,7 @@ int saveenv(void)
                        goto done;
        }
 
-       if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) {
-               sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE;
-               if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE)
-                       sector++;
-       }
+       sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
 
        puts("Erasing SPI flash...");
        ret = spi_flash_erase(env_flash, env_new_offset,
@@ -245,7 +241,7 @@ out:
 #else
 int saveenv(void)
 {
-       u32     saved_size, saved_offset, sector = 1;
+       u32     saved_size, saved_offset, sector;
        char    *saved_buffer = NULL;
        int     ret = 1;
        env_t   env_new;
@@ -268,16 +264,12 @@ int saveenv(void)
                        goto done;
        }
 
-       if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) {
-               sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE;
-               if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE)
-                       sector++;
-       }
-
        ret = env_export(&env_new);
        if (ret)
                goto done;
 
+       sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
+
        puts("Erasing SPI flash...");
        ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
                sector * CONFIG_ENV_SECT_SIZE);