openwrtv4/target/linux/atheros/patches-3.8/141-redboot_partition_scan.patch
Gabor Juhos 9cc3a60b5a atheros: add support for linux kernel v3.8
This builds and boots.

Because of the function pointer indirection (e.g. mtd_info's read
function pointer is assigned to spiflash_read), it is difficult for me
to understand where the calls are coming from (could be anywhere,
conditionally pointing at spiflash versions), so I punted and used the
renamed function pointers (_erase, _read, _write).  If someone knows
better what to do, please fix.

Cleaned up other sundry kernel tracking issues like get_phy_id and
__devinit,etc.

[juhosg: don't switch to that yet]

Signed-off-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 35727
2013-02-21 17:45:54 +00:00

45 lines
1.3 KiB
Diff

--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -79,6 +79,11 @@ static int parse_redboot_partitions(stru
static char nullstring[] = "unallocated";
#endif
+ buf = vmalloc(master->erasesize);
+ if (!buf)
+ return -ENOMEM;
+
+ restart:
if ( directory < 0 ) {
offset = master->size + directory * master->erasesize;
while (mtd_can_have_bb(master) &&
@@ -86,6 +91,7 @@ static int parse_redboot_partitions(stru
if (!offset) {
nogood:
printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
+ vfree(buf);
return -EIO;
}
offset -= master->erasesize;
@@ -99,10 +105,6 @@ static int parse_redboot_partitions(stru
goto nogood;
}
}
- buf = vmalloc(master->erasesize);
-
- if (!buf)
- return -ENOMEM;
printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
master->name, offset);
@@ -175,6 +177,11 @@ static int parse_redboot_partitions(stru
}
if (i == numslots) {
/* Didn't find it */
+ if (offset + master->erasesize < master->size) {
+ /* not at the end of the flash yet, maybe next block :) */
+ directory++;
+ goto restart;
+ }
printk(KERN_NOTICE "No RedBoot partition table detected in %s\n",
master->name);
ret = 0;