1 From 4586bc54a322568d5258d6a1b04e361d4a95597b Mon Sep 17 00:00:00 2001
2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
3 Date: Wed, 12 Nov 2014 09:06:22 +0100
4 Subject: [PATCH][RFC] mtd: bcm47xxpart: lower minimal blocksize to 4Ki (from
7 Content-Type: text/plain; charset=UTF-8
8 Content-Transfer-Encoding: 8bit
10 Some devices like Netgear WNR1000v3 or WGR614v10 have partitions aligned
11 to 0x1000. Using bigger blocksize stopped us from detecting some parts.
13 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
15 Most of supported devices use flashes with erasesize 0x10000 (64Ki), so
16 this change shouldn't affect them (no regressions expected).
19 drivers/mtd/bcm47xxpart.c | 8 ++++++--
20 1 file changed, 6 insertions(+), 2 deletions(-)
22 --- a/drivers/mtd/bcm47xxpart.c
23 +++ b/drivers/mtd/bcm47xxpart.c
24 @@ -95,8 +95,12 @@ static int bcm47xxpart_parse(struct mtd_
25 int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
26 bool found_nvram = false;
28 - if (blocksize <= 0x10000)
29 - blocksize = 0x10000;
31 + * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
32 + * partitions were aligned to at least 0x1000 anyway.
34 + if (blocksize < 0x1000)
38 parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS,