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Subject[PATCH v3] mtd: fix the wrong timeo for panic_nand_wait()
Date
The panic_nand_wait() expects the timeo in ms and not in jiffies.
But in nand_wait(), the timeo for panic_nand_wait() is assigned with
wrong value(jiffies + some delay). The timeo should be set like the
panic_nand_write() does.

This patch passes timeo in ms to panic_nand_wait().
And this patch also passes timeo in jiffies(converted by msecs_to_jiffies)
to time_before() which makes the code more readable.

Signed-off-by: Huang Shijie <b32955@freescale.com>
---
v1 --> v2:
fixed a compiler error.

v2 --> v3:
add more comments.
---
drivers/mtd/nand/nand_base.c | 8 ++------
1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 8323ac9..a8c1fb4 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -825,13 +825,8 @@ static void panic_nand_wait(struct mtd_info *mtd, struct nand_chip *chip,
static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
{

- unsigned long timeo = jiffies;
int status, state = chip->state;
-
- if (state == FL_ERASING)
- timeo += (HZ * 400) / 1000;
- else
- timeo += (HZ * 20) / 1000;
+ unsigned long timeo = (state == FL_ERASING ? 400 : 20);

led_trigger_event(nand_led_trigger, LED_FULL);

@@ -849,6 +844,7 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
if (in_interrupt() || oops_in_progress)
panic_nand_wait(mtd, chip, timeo);
else {
+ timeo = jiffies + msecs_to_jiffies(timeo);
while (time_before(jiffies, timeo)) {
if (chip->dev_ready) {
if (chip->dev_ready(mtd))
--
1.7.0.4



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