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CHIPS: Fix potential starvation in cfi_cmdset_0001

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The patch below fixes a potential starvation issue that can arise when
there is contention on a chip during a period when a process is
currently writing to it.  The starvation is avoided by conditionally
rescheduling when the chip is left in a state usable by other processes.

Signed-off-by: Josh Boyer <jdub@us.ibm.com>
Signed-off-by: Tom Gall <tom_gall@vnet.ibm.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Josh Boyer 2005-12-06 17:28:19 +00:00 committed by David Woodhouse
parent ba9627b85f
commit df54b52c41
1 changed files with 5 additions and 0 deletions
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5
drivers/mtd/chips/cfi_cmdset_0001.c
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@ -1691,6 +1691,11 @@ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs,
if (chipnum == cfi->numchips)
return 0;
}
/* Be nice and reschedule with the chip in a usable state for other
processes. */
cond_resched();
} while (len);
return 0;