KumiSystems/openwrtv3
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

kernel: add bcm47xxpart patch fixing parsing with some TRX formats

Browse source 
This fixes parsing partition placed after TRX with block-aligned length.
It's important e.g. for Archer C9 which has TRX with kernel only and
rootfs as separated partition.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2016-11-20 16:41:29 +01:00
parent 27c355f8a4
commit 746e63201b
1 changed files with 37 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
target/linux/generic/patches-4.4/143-mtd-bcm47xxpart-fix-parsing-first-block-after-aligne.patch Normal file
View file

@ -0,0 +1,37 @@
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] mtd: bcm47xxpart: fix parsing first block after aligned TRX
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
After parsing TRX we should skip to the first block placed behind it.
Our code was working only with TRX with length not aligned to the
blocksize. In other cases (length aligned) it was missing the block
places right after TRX.
This fixes calculation and simplifies the comment.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
drivers/mtd/bcm47xxpart.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -229,12 +229,10 @@ static int bcm47xxpart_parse(struct mtd_
last_trx_part = curr_part - 1;
- /*
- * We have whole TRX scanned, skip to the next part. Use
- * roundown (not roundup), as the loop will increase
- * offset in next step.
- */
- offset = rounddown(offset + trx->length, blocksize);
+ /* Jump to the end of TRX */
+ offset = roundup(offset + trx->length, blocksize);
+ /* Next loop iteration will increase the offset */
+ offset -= blocksize;
continue;
}