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[MTD] OneNAND: release CPU in cycles 

This patch teaches OneNAND to release processor in
read/write/erase cycles and let other processes proceed.
Also, remove buggi touch watchdog call which only hides
the problem instead of solving it.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Artem Bityutskiy 2006-12-26 16:41:24 +09:00 committed by Artem Bityutskiy
parent 60d84f9739
commit 61a7e1983e
1 changed files with 9 additions and 7 deletions
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16
drivers/mtd/onenand/onenand_base.c
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@ -310,7 +310,6 @@ static int onenand_wait(struct mtd_info *mtd, int state)
if (state != FL_READING)
cond_resched();
touch_softlockup_watchdog();
}
/* To get correct interrupt status in timeout case */
interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
@ -367,9 +366,6 @@ static int onenand_interrupt_wait(struct mtd_info *mtd, int state)
{
struct onenand_chip *this = mtd->priv;
/* To prevent soft lockup */
touch_softlockup_watchdog();
wait_for_completion(&this->complete);
return onenand_wait(mtd, state);
@ -390,9 +386,6 @@ static int onenand_try_interrupt_wait(struct mtd_info *mtd, int state)
/* We use interrupt wait first */
this->wait = onenand_interrupt_wait;
/* To prevent soft lockup */
touch_softlockup_watchdog();
timeout = msecs_to_jiffies(100);
remain = wait_for_completion_timeout(&this->complete, timeout);
if (!remain) {
@ -734,6 +727,8 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
stats = mtd->ecc_stats;
while (read < len) {
cond_resched();
thislen = min_t(int, mtd->writesize, len - read);
column = from & (mtd->writesize - 1);
@ -815,6 +810,8 @@ int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
column = from & (mtd->oobsize - 1);
while (read < len) {
cond_resched();
thislen = mtd->oobsize - column;
thislen = min_t(int, thislen, len);
@ -989,6 +986,8 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
int thislen = min_t(int, bytes, len - written);
u_char *wbuf = (u_char *) buf;
cond_resched();
this->command(mtd, ONENAND_CMD_BUFFERRAM, to, bytes);
/* Partial page write */
@ -1075,6 +1074,8 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
while (written < len) {
int thislen = min_t(int, mtd->oobsize, len - written);
cond_resched();
column = to & (mtd->oobsize - 1);
this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize);
@ -1202,6 +1203,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
instr->state = MTD_ERASING;
while (len) {
cond_resched();
/* Check if we have a bad block, we do not erase bad blocks */
if (onenand_block_checkbad(mtd, addr, 0, 0)) {