Allow any partition type, not just known FAT types.

Instead of only mounting partitions with a FAT partition type, try any
partition that isn't type 0 (unallocated) or 5 (extended). This makes it easier
to reformat SDXC cards which have the exFAT partition type, and also brings us
in line with pretty much every other OS at this point. Anything with a
valid-looking FAT superblock will get mounted.

original author:    Torne Wuff <torne@wolfpuppy.org.uk>

Change-Id: I3ea8d437a79f9da270f9d119cc670e472331a9da

1 files changed, 2 insertions, 3 deletions

diff --git a/firmware/common/disk.c b/firmware/common/disk.c
index c9676ed285..25c7330032 100644
--- a/firmware/common/disk.c
+++ b/firmware/common/disk.c
@@ -200,9 +200,8 @@ int disk_mount(int drive)
          volume != -1 && i < 4 && mounted < NUM_VOLUMES_PER_DRIVE;
          i++)
     {
-        if (memchr(fat_partition_types, pinfo[i].type,
-                   sizeof(fat_partition_types)) == NULL)
-            continue;  /* not an accepted partition type */
+        if (pinfo[i].type == 0 || pinfo[i].type == 5)
+            continue;  /* skip free/extended partitions */
 
     #ifdef MAX_LOG_SECTOR_SIZE
         for (int j = 1; j <= (MAX_LOG_SECTOR_SIZE/SECTOR_SIZE); j <<= 1)