Re: [PATCH NAND] mtd: nand: Replace printk() with appropriate dev_*macro()

From: Boris Brezillon
Date: Mon Feb 19 2018 - 10:12:33 EST


On Mon, 19 Feb 2018 18:48:59 +0530
Shreeya Patel <shreeya.patel23498@xxxxxxxxx> wrote:

> Replace printks having a log level with the appropriate
> dev_*macro.
> Also, use pdev->dev as it is guaranteed in each case to be
> properly initialized when passed into dev_*macro().
>
> Signed-off-by: Shreeya Patel <shreeya.patel23498@xxxxxxxxx>
> ---
> drivers/mtd/nand/ams-delta.c | 6 ++++--
> drivers/mtd/nand/cafe_nand.c | 5 +++--
> drivers/mtd/nand/sh_flctl.c | 2 +-
> 3 files changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c
> index dcec9cf..2419ca8 100644
> --- a/drivers/mtd/nand/ams-delta.c
> +++ b/drivers/mtd/nand/ams-delta.c
> @@ -185,7 +185,8 @@ static int ams_delta_init(struct platform_device *pdev)
> /* Allocate memory for MTD device structure and private data */
> this = kzalloc(sizeof(struct nand_chip), GFP_KERNEL);
> if (!this) {
> - printk (KERN_WARNING "Unable to allocate E3 NAND MTD device structure.\n");
> + dev_warn(&pdev->dev,
> + "Unable to allocate E3 NAND MTD device structure.\n");
> err = -ENOMEM;
> goto out;
> }
> @@ -219,7 +220,8 @@ static int ams_delta_init(struct platform_device *pdev)
> this->dev_ready = ams_delta_nand_ready;
> } else {
> this->dev_ready = NULL;
> - printk(KERN_NOTICE "Couldn't request gpio for Delta NAND ready.\n");
> + dev_notice(&pdev->dev,
> + "Couldn't request gpio for Delta NAND ready.\n");
> }
> /* 25 us command delay time */
> this->chip_delay = 30;
> diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
> index bc558c4..51f58ea 100644
> --- a/drivers/mtd/nand/cafe_nand.c
> +++ b/drivers/mtd/nand/cafe_nand.c
> @@ -773,8 +773,9 @@ static int cafe_nand_probe(struct pci_dev *pdev,
> cafe->nand.bbt_td = &cafe_bbt_main_descr_512;
> cafe->nand.bbt_md = &cafe_bbt_mirror_descr_512;
> } else {
> - printk(KERN_WARNING "Unexpected NAND flash writesize %d. Aborting\n",
> - mtd->writesize);
> + dev_warn(&cafe->pdev->dev,
> + "Unexpected NAND flash writesize %d. Aborting\n",
> + mtd->writesize);
> goto out_free_dma;

I see plenty of printk()s (or pr_xxx()s if this patch is applied after
the printk() -> pr_xxx() replacement) that are not converted to
dev_xxx() in this driver. If we start using dev_xxx() it should be used
consistently.

How about we convert all printk()s to pr_xxx()s first (what you do in
your first patch), including those you convert to dev_xxx() here, and
then we consider patching some of the drivers to use dev_xxx() instead
of pr_xxx().

> }
> cafe->nand.ecc.mode = NAND_ECC_HW_SYNDROME;
> diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
> index e7f3c98..c534c49 100644
> --- a/drivers/mtd/nand/sh_flctl.c
> +++ b/drivers/mtd/nand/sh_flctl.c
> @@ -877,7 +877,7 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
> else if (!flctl->seqin_column)
> execmd_write_page_sector(mtd);
> else
> - printk(KERN_ERR "Invalid address !?\n");
> + dev_err(&flctl->pdev->dev, "Invalid address !?\n");
> break;
> }
> set_cmd_regs(mtd, command, (command << 8) | NAND_CMD_SEQIN);



--
Boris Brezillon, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
http://bootlin.com