Commit df54b52c authored by Josh Boyer's avatar Josh Boyer Committed by David Woodhouse

CHIPS: Fix potential starvation in cfi_cmdset_0001

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: default avatarJosh Boyer <jdub@us.ibm.com>
Signed-off-by: default avatarTom Gall <tom_gall@vnet.ibm.com>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent ba9627b8
......@@ -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;
......
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