@@ -14,7 +14,7 @@
DECLARE_GLOBAL_DATA_PTR;
-static unsigned char env_dataflash_get_char(int index)
+static int env_dataflash_get_char(int index)
{
uchar c;
@@ -61,7 +61,7 @@ static int eeprom_bus_write(unsigned dev_addr, unsigned offset,
return rcode;
}
-static uchar env_eeprom_get_char(int index)
+static int env_eeprom_get_char(int index)
{
uchar c;
unsigned int off = CONFIG_ENV_OFFSET;
@@ -41,7 +41,7 @@ env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
#endif
#ifdef CONFIG_SYS_NVRAM_ACCESS_ROUTINE
-static uchar env_nvram_get_char(int index)
+static int env_nvram_get_char(int index)
{
uchar c;
@@ -227,9 +227,9 @@ struct env_driver {
* will read from gd->env_addr.
*
* @index: Index of character to read (0=first)
- * @return character read
+ * @return character read, or -ve on error
*/
- unsigned char (*get_char)(int index);
+ int (*get_char)(int index);
/**
* load() - Load the environment from storage
In principle this can fail, e.g. if the index is out of range. Adjust the driver signature to allow returning an error code. Signed-off-by: Simon Glass <sjg@chromium.org> --- env/dataflash.c | 2 +- env/eeprom.c | 2 +- env/nvram.c | 2 +- include/environment.h | 4 ++-- 4 files changed, 5 insertions(+), 5 deletions(-)