printk() is the raw way to print output and should be avoided.

For drivers with defined "struct device object", dev_*macro() is
prefer to standardize the output format within the subsystem.

If no "struct device object" is defined prefer pr_*macro() over
printk().

This patch Replace printk having a log level with the appropriate output
format according to the order of preference.

Change string explicitly mentioning function name to "%s...", __func__.

Signed-off-by: Arushi Singhal <arushisinghal19971...@gmail.com>
---
changes in v2
*if "struct device object" is defined prefered dev_*macro() over
pr_*macro().

 drivers/mtd/chips/cfi_cmdset_0001.c | 127 +++++++++++++++++++-----------------
 1 file changed, 66 insertions(+), 61 deletions(-)

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c 
b/drivers/mtd/chips/cfi_cmdset_0001.c
index 5e1b68c..18f24ce 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -182,7 +182,7 @@ static void fixup_convert_atmel_pri(struct mtd_info *mtd)
        memcpy(&atmel_pri, extp, sizeof(atmel_pri));
        memset((char *)extp + 5, 0, sizeof(*extp) - 5);
 
-       printk(KERN_ERR "atmel Features: %02x\n", atmel_pri.Features);
+       dev_err(&mtd->dev, "atmel Features: %02x\n", atmel_pri.Features);
 
        if (atmel_pri.Features & 0x01) /* chip erase supported */
                features |= (1<<0);
@@ -224,8 +224,7 @@ static void fixup_intel_strataflash(struct mtd_info *mtd)
        struct cfi_private *cfi = map->fldrv_priv;
        struct cfi_pri_intelext *extp = cfi->cmdset_priv;
 
-       printk(KERN_WARNING "cfi_cmdset_0001: Suspend "
-                           "erase on write disabled.\n");
+       dev_warn(&mtd->dev, "cfi_cmdset_0001: Suspend erase on write 
disabled\n");
        extp->SuspendCmdSupport &= ~1;
 }
 #endif
@@ -239,7 +238,7 @@ static void fixup_no_write_suspend(struct mtd_info *mtd)
 
        if (cfip && (cfip->FeatureSupport&4)) {
                cfip->FeatureSupport &= ~4;
-               printk(KERN_WARNING "cfi_cmdset_0001: write suspend 
disabled\n");
+               dev_warn(&mtd->dev, "cfi_cmdset_0001: write suspend 
disabled\n");
        }
 }
 #endif
@@ -282,13 +281,13 @@ static void fixup_LH28F640BF(struct mtd_info *mtd)
        /* Reset the Partition Configuration Register on LH28F640BF
         * to a single partition (PCR = 0x000): PCR is embedded into A0-A15. */
        if (is_LH28F640BF(cfi)) {
-               printk(KERN_INFO "Reset Partition Config. Register: 1 Partition 
of 4 planes\n");
+               dev_info(&mtd->dev, "Reset Partition Config. Register: 1 
Partition of 4 planes\n");
                map_write(map, CMD(0x60), 0);
                map_write(map, CMD(0x04), 0);
 
                /* We have set one single partition thus
                 * Simultaneous Operations are not allowed */
-               printk(KERN_INFO "cfi_cmdset_0001: Simultaneous Operations 
disabled\n");
+               dev_info(&mtd->dev, "cfi_cmdset_0001: Simultaneous Operations 
disabled\n");
                extp->FeatureSupport &= ~512;
        }
 }
@@ -307,7 +306,7 @@ static void fixup_use_write_buffers(struct mtd_info *mtd)
        struct map_info *map = mtd->priv;
        struct cfi_private *cfi = map->fldrv_priv;
        if (cfi->cfiq->BufWriteTimeoutTyp) {
-               printk(KERN_INFO "Using buffer write method\n" );
+               dev_info(&mtd->dev, "Using buffer write method\n");
                mtd->_write = cfi_intelext_write_buffers;
                mtd->_writev = cfi_intelext_writev;
        }
@@ -323,7 +322,7 @@ static void fixup_unlock_powerup_lock(struct mtd_info *mtd)
        struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
 
        if (cfip->FeatureSupport&32) {
-               printk(KERN_INFO "Using auto-unlock on power-up/resume\n" );
+               dev_info(&mtd->dev, "Using auto-unlock on power-up/resume\n");
                mtd->flags |= MTD_POWERUP_LOCK;
        }
 }
@@ -392,9 +391,8 @@ read_pri_intelext(struct map_info *map, __u16 adr)
 
        if (extp->MajorVersion != '1' ||
            (extp->MinorVersion < '0' || extp->MinorVersion > '5')) {
-               printk(KERN_ERR "  Unknown Intel/Sharp Extended Query "
-                      "version %c.%c.\n",  extp->MajorVersion,
-                      extp->MinorVersion);
+               pr_err("Unknown Intel/Sharp Extended Query version %c.%c\n",
+                      extp->MajorVersion, extp->MinorVersion);
                kfree(extp);
                return NULL;
        }
@@ -452,9 +450,8 @@ read_pri_intelext(struct map_info *map, __u16 adr)
                        extp_size = sizeof(*extp) + extra_size;
                        kfree(extp);
                        if (extp_size > 4096) {
-                               printk(KERN_ERR
-                                       "%s: cfi_pri_intelext is too fat\n",
-                                       __func__);
+                               pr_err("%s: cfi_pri_intelext is too fat\n",
+                                      __func__);
                                return NULL;
                        }
                        goto again;
@@ -519,7 +516,8 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int 
primary)
 #endif
 
                if(extp->SuspendCmdSupport & 1) {
-                       printk(KERN_NOTICE "cfi_cmdset_0001: Erase suspend on 
write enabled\n");
+                       pr_notice("%s: Erase suspend on write enabled\n",
+                                 __func__);
                }
        }
        else if (cfi->cfi_mode == CFI_MODE_JEDEC) {
@@ -622,15 +620,16 @@ static struct mtd_info *cfi_intelext_setup(struct 
mtd_info *mtd)
 
        if (offset != devsize) {
                /* Argh */
-               printk(KERN_WARNING "Sum of regions (%lx) != total size of set 
of interleaved chips (%lx)\n", offset, devsize);
+               dev_warn(&mtd->dev, "Sum of regions (%lx) != total size of set 
of interleaved chips (%lx)\n",
+                        offset, devsize);
                goto setup_err;
        }
 
        for (i=0; i<mtd->numeraseregions;i++){
-               printk(KERN_DEBUG "erase region %d: 
offset=0x%llx,size=0x%x,blocks=%d\n",
-                      i,(unsigned long long)mtd->eraseregions[i].offset,
-                      mtd->eraseregions[i].erasesize,
-                      mtd->eraseregions[i].numblocks);
+               dev_dbg(&mtd->dev, "erase region %d: 
offset=0x%llx,size=0x%x,blocks=%d\n",
+                       i, (unsigned long long)mtd->eraseregions[i].offset,
+                       mtd->eraseregions[i].erasesize,
+                       mtd->eraseregions[i].numblocks);
        }
 
 #ifdef CONFIG_MTD_OTP
@@ -722,10 +721,10 @@ static int cfi_intelext_partition_fixup(struct mtd_info 
*mtd,
                        prinfo = (struct cfi_intelext_programming_regioninfo 
*)&extp->extra[offs];
                        mtd->writesize = cfi->interleave << 
prinfo->ProgRegShift;
                        mtd->flags &= ~MTD_BIT_WRITEABLE;
-                       printk(KERN_DEBUG "%s: program region 
size/ctrl_valid/ctrl_inval = %d/%d/%d\n",
-                              map->name, mtd->writesize,
-                              cfi->interleave * prinfo->ControlValid,
-                              cfi->interleave * prinfo->ControlInvalid);
+                       dev_dbg(&mtd->dev, "%s: program region 
size/ctrl_valid/ctrl_inval = %d/%d/%d\n",
+                               map->name, mtd->writesize,
+                               cfi->interleave * prinfo->ControlValid,
+                               cfi->interleave * prinfo->ControlInvalid);
                }
 
                /*
@@ -736,8 +735,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info 
*mtd,
                partshift = cfi->chipshift - __ffs(numparts);
 
                if ((1 << partshift) < mtd->erasesize) {
-                       printk( KERN_ERR
-                               "%s: bad number of hw partitions (%d)\n",
+                       dev_err(&mtd->dev, "%s: bad number of hw partitions 
(%d)\n",
                                __func__, numparts);
                        return -EINVAL;
                }
@@ -771,10 +769,9 @@ static int cfi_intelext_partition_fixup(struct mtd_info 
*mtd,
                        }
                }
 
-               printk(KERN_DEBUG "%s: %d set(s) of %d interleaved chips "
-                                 "--> %d partitions of %d KiB\n",
-                                 map->name, cfi->numchips, cfi->interleave,
-                                 newcfi->numchips, 1<<(newcfi->chipshift-10));
+               dev_dbg(&mtd->dev, "%s: %d set(s) of %d interleaved chips --> 
%d partitions of %d KiB\n",
+                       map->name, cfi->numchips, cfi->interleave,
+                       newcfi->numchips, 1 << (newcfi->chipshift - 10));
 
                map->fldrv_priv = newcfi;
                *pcfi = newcfi;
@@ -853,8 +850,8 @@ static int chip_ready (struct map_info *map, struct flchip 
*chip, unsigned long
                                /* Urgh. Resume and pretend we weren't here.
                                 * Make sure we're in 'read status' mode if it 
had finished */
                                put_chip(map, chip, adr);
-                               printk(KERN_ERR "%s: Chip not ready after erase 
"
-                                      "suspended: status = 0x%lx\n", 
map->name, status.x[0]);
+                               pr_err("%s: Chip not ready after erase 
suspended: status = 0x%lx\n",
+                                      map->name, status.x[0]);
                                return -EIO;
                        }
 
@@ -1057,7 +1054,8 @@ static void put_chip(struct map_info *map, struct flchip 
*chip, unsigned long ad
        case FL_JEDEC_QUERY:
                break;
        default:
-               printk(KERN_ERR "%s: put_chip() called with oldstate %d!!\n", 
map->name, chip->oldstate);
+               pr_err("%s: %s() called with oldstate %d!!\n",
+                      map->name, __func__, chip->oldstate);
        }
        wake_up(&chip->wq);
 }
@@ -1436,7 +1434,8 @@ static int cfi_intelext_unpoint(struct mtd_info *mtd, 
loff_t from, size_t len)
                        if(chip->ref_point_counter == 0)
                                chip->state = FL_READY;
                } else {
-                       printk(KERN_ERR "%s: Error: unpoint called on non 
pointed region\n", map->name);
+                       dev_err(&mtd->dev, "%s: Error: unpoint called on non 
pointed region\n",
+                               map->name);
                        err = -EINVAL;
                }
 
@@ -1560,7 +1559,7 @@ static int __xipram do_write_oneword(struct map_info 
*map, struct flchip *chip,
                                   chip->word_write_time_max);
        if (ret) {
                xip_enable(map, chip, adr);
-               printk(KERN_ERR "%s: word write error (status timeout)\n", 
map->name);
+               pr_err("%s: word write error (status timeout)\n", map->name);
                goto out;
        }
 
@@ -1577,10 +1576,11 @@ static int __xipram do_write_oneword(struct map_info 
*map, struct flchip *chip,
                if (chipstatus & 0x02) {
                        ret = -EROFS;
                } else if (chipstatus & 0x08) {
-                       printk(KERN_ERR "%s: word write error (bad VPP)\n", 
map->name);
+                       pr_err("%s: word write error (bad VPP)\n", map->name);
                        ret = -EIO;
                } else {
-                       printk(KERN_ERR "%s: word write error (status 
0x%lx)\n", map->name, chipstatus);
+                       pr_err("%s: word write error (status 0x%lx)\n",
+                              map->name, chipstatus);
                        ret = -EINVAL;
                }
 
@@ -1723,7 +1723,8 @@ static int __xipram do_write_buffer(struct map_info *map, 
struct flchip *chip,
        status = map_read(map, cmd_adr);
        if (map_word_bitsset(map, status, CMD(0x30))) {
                xip_enable(map, chip, cmd_adr);
-               printk(KERN_WARNING "SR.4 or SR.5 bits set in buffer write 
(status %lx). Clearing.\n", status.x[0]);
+               pr_warn("SR.4 or SR.5 bits set in buffer write (status %lx). 
Clearing\n",
+                       status.x[0]);
                xip_disable(map, chip, cmd_adr);
                map_write(map, CMD(0x50), cmd_adr);
                map_write(map, CMD(0x70), cmd_adr);
@@ -1741,8 +1742,8 @@ static int __xipram do_write_buffer(struct map_info *map, 
struct flchip *chip,
                map_write(map, CMD(0x50), cmd_adr);
                map_write(map, CMD(0x70), cmd_adr);
                xip_enable(map, chip, cmd_adr);
-               printk(KERN_ERR "%s: Chip not ready for buffer write. Xstatus = 
%lx, status = %lx\n",
-                               map->name, Xstatus.x[0], status.x[0]);
+               pr_err("%s: Chip not ready for buffer write. Xstatus = %lx, 
status = %lx\n",
+                      map->name, Xstatus.x[0], status.x[0]);
                goto out;
        }
 
@@ -1806,7 +1807,7 @@ static int __xipram do_write_buffer(struct map_info *map, 
struct flchip *chip,
                map_write(map, CMD(0x70), cmd_adr);
                chip->state = FL_STATUS;
                xip_enable(map, chip, cmd_adr);
-               printk(KERN_ERR "%s: buffer write error (status timeout)\n", 
map->name);
+               pr_err("%s: buffer write error (status timeout)\n", map->name);
                goto out;
        }
 
@@ -1823,10 +1824,11 @@ static int __xipram do_write_buffer(struct map_info 
*map, struct flchip *chip,
                if (chipstatus & 0x02) {
                        ret = -EROFS;
                } else if (chipstatus & 0x08) {
-                       printk(KERN_ERR "%s: buffer write error (bad VPP)\n", 
map->name);
+                       pr_err("%s: buffer write error (bad VPP)\n", map->name);
                        ret = -EIO;
                } else {
-                       printk(KERN_ERR "%s: buffer write error (status 
0x%lx)\n", map->name, chipstatus);
+                       pr_err("%s: buffer write error (status 0x%lx)\n",
+                              map->name, chipstatus);
                        ret = -EINVAL;
                }
 
@@ -1942,7 +1944,7 @@ static int __xipram do_erase_oneblock(struct map_info 
*map, struct flchip *chip,
                map_write(map, CMD(0x70), adr);
                chip->state = FL_STATUS;
                xip_enable(map, chip, adr);
-               printk(KERN_ERR "%s: block erase error: (status timeout)\n", 
map->name);
+               pr_err("%s: block erase error: (status timeout)\n", map->name);
                goto out;
        }
 
@@ -1961,23 +1963,26 @@ static int __xipram do_erase_oneblock(struct map_info 
*map, struct flchip *chip,
                xip_enable(map, chip, adr);
 
                if ((chipstatus & 0x30) == 0x30) {
-                       printk(KERN_ERR "%s: block erase error: (bad command 
sequence, status 0x%lx)\n", map->name, chipstatus);
+                       pr_err("%s: block erase error: (bad command sequence, 
status 0x%lx)\n",
+                              map->name, chipstatus);
                        ret = -EINVAL;
                } else if (chipstatus & 0x02) {
                        /* Protection bit set */
                        ret = -EROFS;
                } else if (chipstatus & 0x8) {
                        /* Voltage */
-                       printk(KERN_ERR "%s: block erase error: (bad VPP)\n", 
map->name);
+                       pr_err("%s: block erase error: (bad VPP)\n", map->name);
                        ret = -EIO;
                } else if (chipstatus & 0x20 && retries--) {
-                       printk(KERN_DEBUG "block erase failed at 0x%08lx: 
status 0x%lx. Retrying...\n", adr, chipstatus);
+                       pr_debug("block erase failed at 0x%08lx: status 0x%lx. 
Retrying...\n",
+                                adr, chipstatus);
                        DISABLE_VPP(map);
                        put_chip(map, chip, adr);
                        mutex_unlock(&chip->mutex);
                        goto retry;
                } else {
-                       printk(KERN_ERR "%s: block erase failed at 0x%08lx 
(status 0x%lx)\n", map->name, adr, chipstatus);
+                       pr_err("%s: block erase failed at 0x%08lx (status 
0x%lx)\n",
+                              map->name, adr, chipstatus);
                        ret = -EIO;
                }
 
@@ -2073,8 +2078,8 @@ static int __xipram do_printlockstatus_oneblock(struct 
map_info *map,
                                                unsigned long adr,
                                                int len, void *thunk)
 {
-       printk(KERN_DEBUG "block status register for 0x%08lx is %x\n",
-              adr, do_getlockstatus_oneblock(map, chip, adr, len, thunk));
+       pr_debug("block status register for 0x%08lx is %x\n",
+                adr, do_getlockstatus_oneblock(map, chip, adr, len, thunk));
        return 0;
 }
 #endif
@@ -2131,7 +2136,7 @@ static int __xipram do_xxlock_oneblock(struct map_info 
*map, struct flchip *chip
                map_write(map, CMD(0x70), adr);
                chip->state = FL_STATUS;
                xip_enable(map, chip, adr);
-               printk(KERN_ERR "%s: block unlock error: (status timeout)\n", 
map->name);
+               pr_err("%s: block unlock error: (status timeout)\n", map->name);
                goto out;
        }
 
@@ -2147,8 +2152,8 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t 
ofs, uint64_t len)
        int ret;
 
 #ifdef DEBUG_LOCK_BITS
-       printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X\n",
-              __func__, ofs, len);
+       dev_dbg(&mtd->dev, "%s: lock status before, ofs=0x%08llx, len=0x%08X\n",
+               __func__, ofs, len);
        cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
                ofs, len, NULL);
 #endif
@@ -2157,8 +2162,7 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t 
ofs, uint64_t len)
                ofs, len, DO_XXLOCK_ONEBLOCK_LOCK);
 
 #ifdef DEBUG_LOCK_BITS
-       printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
-              __func__, ret);
+       dev_dbg(&mtd->dev, "%s: lock status after, ret=%d\n", __func__, ret);
        cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
                ofs, len, NULL);
 #endif
@@ -2171,8 +2175,8 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, 
loff_t ofs, uint64_t len)
        int ret;
 
 #ifdef DEBUG_LOCK_BITS
-       printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X\n",
-              __func__, ofs, len);
+       dev_dbg(&mtd->dev, "%s: lock status before, ofs=0x%08llx, len=0x%08X\n",
+               __func__, ofs, len);
        cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
                ofs, len, NULL);
 #endif
@@ -2181,8 +2185,7 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, 
loff_t ofs, uint64_t len)
                                        ofs, len, DO_XXLOCK_ONEBLOCK_UNLOCK);
 
 #ifdef DEBUG_LOCK_BITS
-       printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
-              __func__, ret);
+       dev_dbg(&mtd->dev, "%s: lock status after, ret=%d\n", __func__, ret);
        cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
                ofs, len, NULL);
 #endif
@@ -2520,7 +2523,8 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
                                 */
                        } else {
                                /* There seems to be an operation pending. We 
must wait for it. */
-                               printk(KERN_NOTICE "Flash device refused 
suspend due to pending operation (oldstate %d)\n", chip->oldstate);
+                               dev_notice(&mtd->dev, "Flash device refused 
suspend due to pending operation (oldstate %d)\n",
+                                          chip->oldstate);
                                ret = -EAGAIN;
                        }
                        break;
@@ -2529,7 +2533,8 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
                           allowed to. Or should we return -EAGAIN, because the 
upper layers
                           ought to have already shut down anything which was 
using the device
                           anyway? The latter for now. */
-                       printk(KERN_NOTICE "Flash device refused suspend due to 
active operation (state %d)\n", chip->state);
+                       dev_notice(&mtd->dev, "Flash device refused suspend due 
to active operation (state %d)\n",
+                                  chip->state);
                        ret = -EAGAIN;
                case FL_PM_SUSPENDED:
                        break;
-- 
2.7.4

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