mtd: nand: omap: fix race condition in omap_wait()

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If a context switch occurs in function omap_wait() just before the
while loop is entered, then upon return from context switch the
timeout may already have elapsed: in that case, status is never
read from NAND device, and omap_wait() returns an error.
This failure has been experimentally observed during stress tests.

This patch ensures a NAND status read is always performed before
returning, as in the generic nand_wait() function.

Signed-off-by: Ivan Djelic <ivan.djelic@parrot.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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Ivan Djelic 2012-04-17 13:11:53 +02:00 • committed by David Woodhouse

parent e25da1c07d

commit a9c465f07c

1 changed files with 3 additions and 1 deletions

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drivers/mtd/nand/omap2.c

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