UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

mtd: rawnand: Stop using chip->state in drivers 

We are about to simplify the locking in the rawnand framework, and part
of this simplication is about getting rid of chip->state, so let's
first patch drivers that check the state.

All of them do that to get a timeout value based on the operation that
is being executed. Since a timeout is, by definition, something that
is here to prevent hanging on an event that might never happen,
picking the maximum timeout value no matter the operation should be
harmless.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Boris Brezillon 2018-11-20 11:57:19 +01:00 committed by Miquel Raynal
parent efe5d132cb
commit 661803b233
3 changed files with 5 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/mtd/nand/raw/omap2.c
View File

@ -994,12 +994,9 @@ static int omap_wait(struct nand_chip *this)
{
struct omap_nand_info *info = mtd_to_omap(nand_to_mtd(this));
unsigned long timeo = jiffies;
int status, state = this->state;
int status;
if (state == FL_ERASING)
timeo += msecs_to_jiffies(400);
else
timeo += msecs_to_jiffies(20);
timeo += msecs_to_jiffies(400);
writeb(NAND_CMD_STATUS & 0xFF, info->reg.gpmc_nand_command);
while (time_before(jiffies, timeo)) {

3
drivers/mtd/nand/raw/r852.c
View File

@ -369,8 +369,7 @@ static int r852_wait(struct nand_chip *chip)
unsigned long timeout;
u8 status;
timeout = jiffies + (chip->state == FL_ERASING ?
msecs_to_jiffies(400) : msecs_to_jiffies(20));
timeout = jiffies + msecs_to_jiffies(400);
while (time_before(jiffies, timeout))
if (chip->legacy.dev_ready(chip))

6
drivers/mtd/nand/raw/tmio_nand.c
View File

@ -195,15 +195,13 @@ static int tmio_nand_wait(struct nand_chip *nand_chip)
reinit_completion(&tmio->comp);
tmio_iowrite8(0x81, tmio->fcr + FCR_IMR);
timeout = nand_chip->state == FL_ERASING ? 400 : 20;
timeout = 400;
timeout = wait_for_completion_timeout(&tmio->comp,
msecs_to_jiffies(timeout));
if (unlikely(!tmio_nand_dev_ready(nand_chip))) {
tmio_iowrite8(0x00, tmio->fcr + FCR_IMR);
dev_warn(&tmio->dev->dev, "still busy with %s after %d ms\n",
nand_chip->state == FL_ERASING ? "erase" : "program",
nand_chip->state == FL_ERASING ? 400 : 20);
dev_warn(&tmio->dev->dev, "still busy after 400 ms\n");
} else if (unlikely(!timeout)) {
tmio_iowrite8(0x00, tmio->fcr + FCR_IMR);