openwrt/target/linux/bcm47xx/patches-5.15/400-mtd-bcm47xxpart-get-nvram.patch
Hauke Mehrtens 30c0ffeccc bcm47xx: Copy kernel from 5.10 to 5.15
Copy patches and configuration from kernel 5.10 to kernel 5.15 files. No
changes were done.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2023-02-03 11:59:07 +01:00

35 lines
1.0 KiB
Diff

--- a/drivers/mtd/parsers/bcm47xxpart.c
+++ b/drivers/mtd/parsers/bcm47xxpart.c
@@ -98,6 +98,7 @@ static int bcm47xxpart_parse(struct mtd_
int trx_num = 0; /* Number of found TRX partitions */
int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
int err;
+ bool found_nvram = false;
/*
* Some really old flashes (like AT45DB*) had smaller erasesize-s, but
@@ -279,12 +280,23 @@ static int bcm47xxpart_parse(struct mtd_
if (buf[0] == NVRAM_HEADER) {
bcm47xxpart_add_part(&parts[curr_part++], "nvram",
master->size - blocksize, 0);
+ found_nvram = true;
break;
}
}
kfree(buf);
+ if (!found_nvram) {
+ pr_err("can not find a nvram partition reserve last block\n");
+ bcm47xxpart_add_part(&parts[curr_part++], "nvram_guess",
+ master->size - blocksize * 2, MTD_WRITEABLE);
+ for (i = 0; i < curr_part; i++) {
+ if (parts[i].size + parts[i].offset == master->size)
+ parts[i].offset -= blocksize * 2;
+ }
+ }
+
/*
* Assume that partitions end at the beginning of the one they are
* followed by.