ath79: add kernel 5.10 support

[openwrt/openwrt.git] / target / linux / ath79 / patches-5.10 / 408-mtd-redboot_partition_scan.patch

diff --git a/target/linux/ath79/patches-5.10/408-mtd-redboot_partition_scan.patch b/target/linux/ath79/patches-5.10/408-mtd-redboot_partition_scan.patch
new file mode 100644 (file)
index 0000000..8f3ee32
--- /dev/null
+++ b/target/linux/ath79/patches-5.10/408-mtd-redboot_partition_scan.patch
@@ -0,0 +1,44 @@
+--- a/drivers/mtd/parsers/redboot.c
++++ b/drivers/mtd/parsers/redboot.c
+@@ -85,12 +85,18 @@ static int parse_redboot_partitions(stru
+ 
+       parse_redboot_of(master);
+ 
++      buf = vmalloc(master->erasesize);
++      if (!buf)
++              return -ENOMEM;
++
++ restart:
+       if ( directory < 0 ) {
+               offset = master->size + directory * master->erasesize;
+               while (mtd_block_isbad(master, offset)) {
+                       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;
+@@ -103,10 +109,6 @@ 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);
+@@ -179,6 +181,11 @@ 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;