1 files changed, 44 insertions, 45 deletions

diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 80156c815f..393c3781eb 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -46,7 +46,6 @@ static void downcase(char *str)
 }
 
 static block_dev_desc_t *cur_dev;
-static unsigned int cur_part_nr;
 static disk_partition_t cur_part_info;
 
 #define DOS_BOOT_MAGIC_OFFSET	0x1fe
@@ -62,43 +61,12 @@ static int disk_read(__u32 block, __u32 nr_blocks, void *buf)
 			cur_part_info.start + block, nr_blocks, buf);
 }
 
-int fat_register_device(block_dev_desc_t * dev_desc, int part_no)
+int fat_set_blk_dev(block_dev_desc_t *dev_desc, disk_partition_t *info)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
 
-	/* First close any currently found FAT filesystem */
-	cur_dev = NULL;
-
-#if (defined(CONFIG_CMD_IDE) || \
-     defined(CONFIG_CMD_SATA) || \
-     defined(CONFIG_CMD_SCSI) || \
-     defined(CONFIG_CMD_USB) || \
-     defined(CONFIG_MMC) || \
-     defined(CONFIG_SYSTEMACE) )
-
-	/* Read the partition table, if present */
-	if (!get_partition_info(dev_desc, part_no, &cur_part_info)) {
-		cur_dev = dev_desc;
-		cur_part_nr = part_no;
-	}
-#endif
-
-	/* Otherwise it might be a superfloppy (whole-disk FAT filesystem) */
-	if (!cur_dev) {
-		if (part_no != 0) {
-			printf("** Partition %d not valid on device %d **\n",
-					part_no, dev_desc->dev);
-			return -1;
-		}
-
-		cur_dev = dev_desc;
-		cur_part_nr = 1;
-		cur_part_info.start = 0;
-		cur_part_info.size = dev_desc->lba;
-		cur_part_info.blksz = dev_desc->blksz;
-		memset(cur_part_info.name, 0, sizeof(cur_part_info.name));
-		memset(cur_part_info.type, 0, sizeof(cur_part_info.type));
-	}
+	cur_dev = dev_desc;
+	cur_part_info = *info;
 
 	/* Make sure it has a valid FAT header */
 	if (disk_read(0, 1, buffer) != 1) {
@@ -122,6 +90,34 @@ int fat_register_device(block_dev_desc_t * dev_desc, int part_no)
 	return -1;
 }
 
+int fat_register_device(block_dev_desc_t *dev_desc, int part_no)
+{
+	disk_partition_t info;
+
+	/* First close any currently found FAT filesystem */
+	cur_dev = NULL;
+
+	/* Read the partition table, if present */
+	if (get_partition_info(dev_desc, part_no, &info)) {
+		if (part_no != 0) {
+			printf("** Partition %d not valid on device %d **\n",
+					part_no, dev_desc->dev);
+			return -1;
+		}
+
+		info.start = 0;
+		info.size = dev_desc->lba;
+		info.blksz = dev_desc->blksz;
+		info.name[0] = 0;
+		info.type[0] = 0;
+		info.bootable = 0;
+#ifdef CONFIG_PARTITION_UUIDS
+		info.uuid[0] = 0;
+#endif
+	}
+
+	return fat_set_blk_dev(dev_desc, &info);
+}
 
 /*
  * Get the first occurence of a directory delimiter ('/' or '\') in a string.
@@ -567,15 +563,16 @@ get_vfatname(fsdata *mydata, int curclust, __u8 *cluster,
 }
 
 /* Calculate short name checksum */
-static __u8 mkcksum(const char *str)
+static __u8 mkcksum(const char name[8], const char ext[3])
 {
 	int i;
 
 	__u8 ret = 0;
 
-	for (i = 0; i < 11; i++) {
-		ret = (((ret & 1) << 7) | ((ret & 0xfe) >> 1)) + str[i];
-	}
+	for (i = 0; i < sizeof(name); i++)
+		ret = (((ret & 1) << 7) | ((ret & 0xfe) >> 1)) + name[i];
+	for (i = 0; i < sizeof(ext); i++)
+		ret = (((ret & 1) << 7) | ((ret & 0xfe) >> 1)) + ext[i];
 
 	return ret;
 }
@@ -678,7 +675,8 @@ static dir_entry *get_dentfromdir(fsdata *mydata, int startsect,
 				return NULL;
 			}
 #ifdef CONFIG_SUPPORT_VFAT
-			if (dols && mkcksum(dentptr->name) == prevcksum) {
+			__u8 csum = mkcksum(dentptr->name, dentptr->ext);
+			if (dols && csum == prevcksum) {
 				prevcksum = 0xffff;
 				dentptr++;
 				continue;
@@ -946,13 +944,16 @@ do_fat_read_at(const char *filename, unsigned long pos, void *buffer,
 
 		for (i = 0; i < DIRENTSPERBLOCK; i++) {
 			char s_name[14], l_name[VFAT_MAXLEN_BYTES];
+			__u8 csum;
 
 			l_name[0] = '\0';
 			if (dentptr->name[0] == DELETED_FLAG) {
 				dentptr++;
 				continue;
 			}
-			if ((dentptr->attr & ATTR_VOLUME)) {
+
+			csum = mkcksum(dentptr->name, dentptr->ext);
+			if (dentptr->attr & ATTR_VOLUME) {
 #ifdef CONFIG_SUPPORT_VFAT
 				if ((dentptr->attr & ATTR_VFAT) == ATTR_VFAT &&
 				    (dentptr->name[0] & LAST_LONG_ENTRY_MASK)) {
@@ -1015,8 +1016,7 @@ do_fat_read_at(const char *filename, unsigned long pos, void *buffer,
 				goto exit;
 			}
 #ifdef CONFIG_SUPPORT_VFAT
-			else if (dols == LS_ROOT &&
-				 mkcksum(dentptr->name) == prevcksum) {
+			else if (dols == LS_ROOT && csum == prevcksum) {
 				prevcksum = 0xffff;
 				dentptr++;
 				continue;
@@ -1235,8 +1235,7 @@ int file_fat_detectfs(void)
 	vol_label[11] = '\0';
 	volinfo.fs_type[5] = '\0';
 
-	printf("Partition %d: Filesystem: %s \"%s\"\n", cur_part_nr,
-		volinfo.fs_type, vol_label);
+	printf("Filesystem: %s \"%s\"\n", volinfo.fs_type, vol_label);
 
 	return 0;
 }