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[MTD] [NAND] Avoid deadlock in erase callback; release chip lock first.

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When the erase callback performs some other action on the flash, it's
highly likely to deadlock unless we actually release the chip lock
before calling it.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse 2007-10-06 15:01:59 -04:00
parent 1fcf8ce51e
commit 49defc015f
1 changed files with 4 additions and 3 deletions
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7
drivers/mtd/nand/nand_base.c
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@ -2069,13 +2069,14 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
erase_exit:
ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
/* Do call back function */
if (!ret)
mtd_erase_callback(instr);
/* Deselect and wake up anyone waiting on the device */
nand_release_device(mtd);
/* Do call back function */
if (!ret)
mtd_erase_callback(instr);
/*
* If BBT requires refresh and erase was successful, rewrite any
* selected bad block tables