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mtd: cfi_cmdset_0002: Split do_write_oneword() op_done goto statement

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To reduce function size and to remove the goto statement, split the
op_done goto statement part into do_write_oneword_done(). Also
split the start part into do_write_oneword_start() to be symmetrical.

Cc: Fabio Bettoni <fbettoni@gmail.com>
Co: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com>
[vigneshr@ti.com: Reword commit message]
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Tokunori Ikegami 2019-08-06 04:03:21 +09:00 committed by Vignesh Raghavendra
parent a371ba57a2
commit 228c05c2d7
1 changed files with 43 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
drivers/mtd/chips/cfi_cmdset_0002.c
View File

@ -1705,6 +1705,40 @@ static int __xipram do_write_oneword_once(struct map_info *map,
return ret;
}
static int __xipram do_write_oneword_start(struct map_info *map,
struct flchip *chip,
unsigned long adr, int mode)
{
int ret = 0;
mutex_lock(&chip->mutex);
ret = get_chip(map, chip, adr, mode);
if (ret) {
mutex_unlock(&chip->mutex);
return ret;
}
if (mode == FL_OTP_WRITE)
otp_enter(map, chip, adr, map_bankwidth(map));
return ret;
}
static void __xipram do_write_oneword_done(struct map_info *map,
struct flchip *chip,
unsigned long adr, int mode)
{
if (mode == FL_OTP_WRITE)
otp_exit(map, chip, adr, map_bankwidth(map));
chip->state = FL_READY;
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
}
static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
unsigned long adr, map_word datum,
int mode)
@ -1716,19 +1750,14 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
adr += chip->start;
mutex_lock(&chip->mutex);
ret = get_chip(map, chip, adr, mode);
pr_debug("MTD %s(): WRITE 0x%.8lx(0x%.8lx)\n", __func__, adr,
datum.x[0]);
ret = do_write_oneword_start(map, chip, adr, mode);
if (ret) {
mutex_unlock(&chip->mutex);
return ret;
}
pr_debug("MTD %s(): WRITE 0x%.8lx(0x%.8lx)\n",
__func__, adr, datum.x[0]);
if (mode == FL_OTP_WRITE)
otp_enter(map, chip, adr, map_bankwidth(map));
/*
* Check for a NOP for the case when the datum to write is already
* present - it saves time and works around buggy chips that corrupt
@ -1737,9 +1766,9 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
*/
oldd = map_read(map, adr);
if (map_word_equal(map, oldd, datum)) {
pr_debug("MTD %s(): NOP\n",
__func__);
goto op_done;
pr_debug("MTD %s(): NOP\n", __func__);
do_write_oneword_done(map, chip, adr, mode);
return ret;
}
XIP_INVAL_CACHED_RANGE(map, adr, map_bankwidth(map));
@ -1760,13 +1789,8 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
}
}
xip_enable(map, chip, adr);
op_done:
if (mode == FL_OTP_WRITE)
otp_exit(map, chip, adr, map_bankwidth(map));
chip->state = FL_READY;
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
do_write_oneword_done(map, chip, adr, mode);
return ret;
}