compulab: splash: use errno values

Use errno values to improve return reporting.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>

diff --git a/board/compulab/common/splash.c b/board/compulab/common/splash.c
index 49ed49b81e97999c81c095b0c12f765eb23fe532..33b2f9f570bab1a4fe021be18b69009a43100972 100644 (file)
--- a/board/compulab/common/splash.c
+++ b/board/compulab/common/splash.c
@@ -8,6 +8,7 @@
 
 #include <common.h>
 #include <nand.h>
+#include <errno.h>
 #include <bmp_layout.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -44,12 +45,12 @@ splash_address_too_high:
        printf("Error: splashimage address too high. Data overwrites U-Boot "
                "and/or placed beyond DRAM boundaries.\n");
 
-       return -1;
+       return -EFAULT;
 }
 #else
 static inline int splash_load_from_nand(u32 bmp_load_addr, int nand_offset)
 {
-       return -1;
+       return -ENOSYS;
 }
 #endif /* CONFIG_CMD_NAND */
 
@@ -60,12 +61,12 @@ int cl_splash_screen_prepare(int nand_offset)
 
        env_splashimage_value = getenv("splashimage");
        if (env_splashimage_value == NULL)
-               return -1;
+               return -ENOENT;
 
        bmp_load_addr = simple_strtoul(env_splashimage_value, 0, 16);
        if (bmp_load_addr == 0) {
                printf("Error: bad splashimage address specified\n");
-               return -1;
+               return -EFAULT;
        }
 
        return splash_load_from_nand(bmp_load_addr, nand_offset);