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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2006-12-26 16:41:24 +0900 |
|---|---|---|
| committer | Artem Bityutskiy <dedekind@infradead.org> | 2007-01-10 14:39:57 +0200 |
| commit | 61a7e1983e773b93aac172dadc97f1eb484536b4 (patch) | |
| tree | a0c048a22aa0bc4bf578809505f72ad72cf7e815 /drivers/mtd | |
| parent | 60d84f9739a47d0ed8e19805d9056e39fba31c79 (diff) | |
| download | linux-61a7e1983e773b93aac172dadc97f1eb484536b4.tar.gz linux-61a7e1983e773b93aac172dadc97f1eb484536b4.tar.bz2 linux-61a7e1983e773b93aac172dadc97f1eb484536b4.zip | |
[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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 51fb84055ba3..0037cee5ef27 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -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)) { |