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authorRoman Tereshonkov <roman.tereshonkov@nokia.com>2011-02-07 10:47:01 +0200
committerTony Lindgren <tony@atomide.com>2011-02-17 15:44:46 -0800
commitc497dd5594ed3ef97bc563b07e8c050618f745a3 (patch)
treed85613c1a8a882e94a41e6c2c9fe423de0356af5 /drivers/mtd
parent5714b7ed6b3e3c00c0d4719bb66757e64c30ecf6 (diff)
downloadop-kernel-dev-c497dd5594ed3ef97bc563b07e8c050618f745a3.zip
op-kernel-dev-c497dd5594ed3ef97bc563b07e8c050618f745a3.tar.gz
mtd: OneNAND: OMAP2: increase multiblock erase verify timeout
The current multiblock erase verify read timeout 100us is the maximum for none-error case. If errors happen during multibock erase then the specification recommends to run multiblock erase verify command with maximum timeout 10ms (see specs. for KFM4G16Q2A and KFN8G16Q2A). For the most common non-error case we wait 100us in udelay polling loop. In case of timeout the interrupt mode is used to wait for the command end. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/onenand/omap2.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 3e1bb95..ec26399 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -148,11 +148,9 @@ static int omap2_onenand_wait(struct mtd_info *mtd, int state)
wait_err("controller error", state, ctrl, intr);
return -EIO;
}
- if ((intr & intr_flags) != intr_flags) {
- wait_err("timeout", state, ctrl, intr);
- return -EIO;
- }
- return 0;
+ if ((intr & intr_flags) == intr_flags)
+ return 0;
+ /* Continue in wait for interrupt branch */
}
if (state != FL_READING) {
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