mtd: treat failure to open FIS partition as fatal when a fis_layout is given, aborts mtd write if reformat is needed and FIS table not available

SVN-Revision: 19231

package/mtd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=mtd
-PKG_RELEASE:=10
+PKG_RELEASE:=11
 
 PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
 STAMP_PREPARED := $(STAMP_PREPARED)_$(call confvar,CONFIG_MTD_REDBOOT_PARTS)

package/mtd/src/fis.c

@@ -99,7 +99,7 @@ fis_validate(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
 
 	desc = fis_open();
 	if (!desc)
-		return 0;
+		return -1;
 
 	for (i = 0; i < n_new - 1; i++) {
 		if (!new[i].size) {