[PATCH v3 1/3] mtd: mtdoops: change printk() to counterpart pr_ functions

Ray Zhang
2022-10-07T21:50:54Z

To comply with latest kernel code requirement, change printk() to
counterpart pr_ functions in mtdoops driver:
- change printk(INFO) to pr_info()
- change printk(DEBUG) to pr_debug()
- change printk(WARNING) to pr_warn()
- change printk(ERR) to pr_err()

Note that only if dynamic debugging is enabled or DEBUG is defined,
printk(KERN_DEBUG) and pr_debug() are equivalent; Otherwise pr_debug()
is no-op, causing different behavior.

Signed-off-by: Ray Zhang <sgzhang@google.com>
---
drivers/mtd/mtdoops.c | 50 +++++++++++++++++++++----------------------
1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index 3d4a2ffb5b01..84b21be347f6 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -93,9 +93,9 @@ static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset)

ret = mtd_erase(mtd, &erase);
if (ret) {
- printk(KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n",
- (unsigned long long)erase.addr,
- (unsigned long long)erase.len, mtddev);
+ pr_warn("mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n",
+ (unsigned long long)erase.addr,
+ (unsigned long long)erase.len, mtddev);
return ret;
}

@@ -120,8 +120,8 @@ static void mtdoops_inc_counter(struct mtdoops_context *cxt)
return;
}

- printk(KERN_DEBUG "mtdoops: ready %d, %d (no erase)\n",
- cxt->nextpage, cxt->nextcount);
+ pr_debug("mtdoops: ready %d, %d (no erase)\n",
+ cxt->nextpage, cxt->nextcount);
}

/* Scheduled work - when we can't proceed without erasing a block */
@@ -145,20 +145,20 @@ static void mtdoops_workfunc_erase(struct work_struct *work)

while ((ret = mtd_block_isbad(mtd, cxt->nextpage * record_size)) > 0) {
badblock:
- printk(KERN_WARNING "mtdoops: bad block at %08lx\n",
- cxt->nextpage * record_size);
+ pr_warn("mtdoops: bad block at %08lx\n",
+ cxt->nextpage * record_size);
i++;
cxt->nextpage = cxt->nextpage + (mtd->erasesize / record_size);
if (cxt->nextpage >= cxt->oops_pages)
cxt->nextpage = 0;
if (i == cxt->oops_pages / (mtd->erasesize / record_size)) {
- printk(KERN_ERR "mtdoops: all blocks bad!\n");
+ pr_err("mtdoops: all blocks bad!\n");
return;
}
}

if (ret < 0) {
- printk(KERN_ERR "mtdoops: mtd_block_isbad failed, aborting\n");
+ pr_err("mtdoops: mtd_block_isbad failed, aborting\n");
return;
}

@@ -166,15 +166,15 @@ static void mtdoops_workfunc_erase(struct work_struct *work)
ret = mtdoops_erase_block(cxt, cxt->nextpage * record_size);

if (ret >= 0) {
- printk(KERN_DEBUG "mtdoops: ready %d, %d\n",
- cxt->nextpage, cxt->nextcount);
+ pr_debug("mtdoops: ready %d, %d\n",
+ cxt->nextpage, cxt->nextcount);
return;
}

if (ret == -EIO) {
ret = mtd_block_markbad(mtd, cxt->nextpage * record_size);
if (ret < 0 && ret != -EOPNOTSUPP) {
- printk(KERN_ERR "mtdoops: block_markbad failed, aborting\n");
+ pr_err("mtdoops: block_markbad failed, aborting\n");
return;
}
}
@@ -201,7 +201,7 @@ static void mtdoops_write(struct mtdoops_context *cxt, int panic)
ret = mtd_panic_write(mtd, cxt->nextpage * record_size,
record_size, &retlen, cxt->oops_buf);
if (ret == -EOPNOTSUPP) {
- printk(KERN_ERR "mtdoops: Cannot write from panic without panic_write\n");
+ pr_err("mtdoops: Cannot write from panic without panic_write\n");
goto out;
}
} else
@@ -209,7 +209,7 @@ static void mtdoops_write(struct mtdoops_context *cxt, int panic)
record_size, &retlen, cxt->oops_buf);

if (retlen != record_size || ret < 0)
- printk(KERN_ERR "mtdoops: write failure at %ld (%td of %ld written), error %d\n",
+ pr_err("mtdoops: write failure at %ld (%td of %ld written), error %d\n",
cxt->nextpage * record_size, retlen, record_size, ret);
mark_page_used(cxt, cxt->nextpage);
memset(cxt->oops_buf, 0xff, record_size);
@@ -244,7 +244,7 @@ static void find_next_position(struct mtdoops_context *cxt)
&retlen, (u_char *)&hdr);
if (retlen != sizeof(hdr) ||
(ret < 0 && !mtd_is_bitflip(ret))) {
- printk(KERN_ERR "mtdoops: read failure at %ld (%zu of %zu read), err %d\n",
+ pr_err("mtdoops: read failure at %ld (%zu of %zu read), err %d\n",
page * record_size, retlen, sizeof(hdr), ret);
continue;
}
@@ -324,17 +324,17 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
return;

if (mtd->size < mtd->erasesize * 2) {
- printk(KERN_ERR "mtdoops: MTD partition %d not big enough for mtdoops\n",
+ pr_err("mtdoops: MTD partition %d not big enough for mtdoops\n",
mtd->index);
return;
}
if (mtd->erasesize < record_size) {
- printk(KERN_ERR "mtdoops: eraseblock size of MTD partition %d too small\n",
+ pr_err("mtdoops: eraseblock size of MTD partition %d too small\n",
mtd->index);
return;
}
if (mtd->size > MTDOOPS_MAX_MTD_SIZE) {
- printk(KERN_ERR "mtdoops: mtd%d is too large (limit is %d MiB)\n",
+ pr_err("mtdoops: mtd%d is too large (limit is %d MiB)\n",
mtd->index, MTDOOPS_MAX_MTD_SIZE / 1024 / 1024);
return;
}
@@ -345,7 +345,7 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
DIV_ROUND_UP(mtdoops_pages,
BITS_PER_LONG)));
if (!cxt->oops_page_used) {
- printk(KERN_ERR "mtdoops: could not allocate page array\n");
+ pr_err("mtdoops: could not allocate page array\n");
return;
}

@@ -353,7 +353,7 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
cxt->dump.dump = mtdoops_do_dump;
err = kmsg_dump_register(&cxt->dump);
if (err) {
- printk(KERN_ERR "mtdoops: registering kmsg dumper failed, error %d\n", err);
+ pr_err("mtdoops: registering kmsg dumper failed, error %d\n", err);
vfree(cxt->oops_page_used);
cxt->oops_page_used = NULL;
return;
@@ -362,7 +362,7 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
cxt->mtd = mtd;
cxt->oops_pages = (int)mtd->size / record_size;
find_next_position(cxt);
- printk(KERN_INFO "mtdoops: Attached to MTD device %d\n", mtd->index);
+ pr_info("mtdoops: Attached to MTD device %d\n", mtd->index);
}

static void mtdoops_notify_remove(struct mtd_info *mtd)
@@ -373,7 +373,7 @@ static void mtdoops_notify_remove(struct mtd_info *mtd)
return;

if (kmsg_dump_unregister(&cxt->dump) < 0)
- printk(KERN_WARNING "mtdoops: could not unregister kmsg_dumper\n");
+ pr_warn("mtdoops: could not unregister kmsg_dumper\n");

cxt->mtd = NULL;
flush_work(&cxt->work_erase);
@@ -393,15 +393,15 @@ static int __init mtdoops_init(void)
char *endp;

if (strlen(mtddev) == 0) {
- printk(KERN_ERR "mtdoops: mtd device (mtddev=name/number) must be supplied\n");
+ pr_err("mtdoops: mtd device (mtddev=name/number) must be supplied\n");
return -EINVAL;
}
if ((record_size & 4095) != 0) {
- printk(KERN_ERR "mtdoops: record_size must be a multiple of 4096\n");
+ pr_err("mtdoops: record_size must be a multiple of 4096\n");
return -EINVAL;
}
if (record_size < 4096) {
- printk(KERN_ERR "mtdoops: record_size must be over 4096 bytes\n");
+ pr_err("mtdoops: record_size must be over 4096 bytes\n");
return -EINVAL;