2014-11-19 17:35:24 +00:00
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From 4586bc54a322568d5258d6a1b04e361d4a95597b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Wed, 12 Nov 2014 09:06:22 +0100
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Subject: [PATCH][RFC] mtd: bcm47xxpart: lower minimal blocksize to 4Ki (from
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64Ki)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Some devices like Netgear WNR1000v3 or WGR614v10 have partitions aligned
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to 0x1000. Using bigger blocksize stopped us from detecting some parts.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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---
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Most of supported devices use flashes with erasesize 0x10000 (64Ki), so
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this change shouldn't affect them (no regressions expected).
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Any objections?
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---
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drivers/mtd/bcm47xxpart.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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2014-12-07 16:12:44 +00:00
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@@ -95,8 +95,12 @@ static int bcm47xxpart_parse(struct mtd_
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2014-11-19 17:35:24 +00:00
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int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
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bool found_nvram = false;
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- if (blocksize <= 0x10000)
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- blocksize = 0x10000;
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+ /*
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+ * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
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+ * partitions were aligned to at least 0x1000 anyway.
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+ */
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+ if (blocksize < 0x1000)
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+ blocksize = 0x1000;
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/* Alloc */
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parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS,
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