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[PATCH] mtd_dataflash, fix block vs page erase

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Fix a bug in the block-erase optimization for Dataflash; it was using block
erase even for smaller segments that need page erase.

That wouldn't matter for JFFS2, which never erases less than one block
(sometimes several blocks), but for other callers it might.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Brownell 2006-03-13 21:20:40 -08:00 committed by Linus Torvalds
parent 3759fa9c55
commit 3cb4f09fc2
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/devices/mtd_dataflash.c
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@ -178,7 +178,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
* we're at a block boundary and need to erase the whole block.
*/
pageaddr = instr->addr / priv->page_size;
do_block = (pageaddr & 0x7) == 0 && instr->len <= blocksize;
do_block = (pageaddr & 0x7) == 0 && instr->len >= blocksize;
pageaddr = pageaddr << priv->page_offset;
command[0] = do_block ? OP_ERASE_BLOCK : OP_ERASE_PAGE;