Re: [PATCH v2 06/11] mtd: nand: drop unnecessary partition parser data
From: Boris Brezillon
Date: Sun Nov 01 2015 - 17:33:28 EST
On Fri, 30 Oct 2015 20:33:25 -0700
Brian Norris <computersforpeace@xxxxxxxxx> wrote:
> All of these drivers set up a parser data struct just to communicate DT
> partition data. This field has been deprecated and is instead supported
> by telling nand_scan_ident() about the 'flash_node'.
>
> This patch:
> * sets chip->flash_node for those drivers that didn't already (but used
> OF partitioning)
> * drops the parser data
> * switches to the simpler mtd_device_register() where possible, now
> that we've eliminated one of the auxiliary parameters
>
> Now that we've assigned chip->flash_node for these drivers, we can
> probably rely on nand_dt_init() to do more of the DT parsing for us, but
> for now, I don't want to fiddle with each of these drivers. The parsing
> is done in duplicate for now on some drivers. I don't think this should
> break things. (Famous last words.)
>
> Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx>
> Acked-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> ---
> v2: fix compile errors, use new helpers to set the DT node
>
> drivers/mtd/nand/atmel_nand.c | 7 +++----
> drivers/mtd/nand/brcmnand/brcmnand.c | 3 +--
> drivers/mtd/nand/davinci_nand.c | 10 +++-------
> drivers/mtd/nand/fsl_elbc_nand.c | 5 ++---
> drivers/mtd/nand/fsl_ifc_nand.c | 5 ++---
> drivers/mtd/nand/fsl_upm.c | 5 ++---
> drivers/mtd/nand/fsmc_nand.c | 7 +++----
> drivers/mtd/nand/gpio.c | 8 +++-----
> drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 5 ++---
> drivers/mtd/nand/hisi504_nand.c | 5 ++---
> drivers/mtd/nand/lpc32xx_mlc.c | 7 +++----
> drivers/mtd/nand/lpc32xx_slc.c | 7 +++----
> drivers/mtd/nand/mpc5121_nfc.c | 5 ++---
> drivers/mtd/nand/mxc_nand.c | 5 ++---
> drivers/mtd/nand/ndfc.c | 5 ++---
> drivers/mtd/nand/omap2.c | 6 ++----
> drivers/mtd/nand/orion_nand.c | 6 ++----
> drivers/mtd/nand/plat_nand.c | 5 ++---
> drivers/mtd/nand/pxa3xx_nand.c | 10 +++++-----
> drivers/mtd/nand/sh_flctl.c | 6 ++----
> drivers/mtd/nand/socrates_nand.c | 5 ++---
> drivers/mtd/nand/sunxi_nand.c | 4 +---
> drivers/mtd/nand/vf610_nfc.c | 6 +-----
> drivers/staging/mt29f_spinand/mt29f_spinand.c | 5 ++---
> 24 files changed, 54 insertions(+), 88 deletions(-)
>
> diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
> index 583cdd9bb971..6ecc1c1ab437 100644
> --- a/drivers/mtd/nand/atmel_nand.c
> +++ b/drivers/mtd/nand/atmel_nand.c
> @@ -2093,7 +2093,6 @@ static int atmel_nand_probe(struct platform_device *pdev)
> struct mtd_info *mtd;
> struct nand_chip *nand_chip;
> struct resource *mem;
> - struct mtd_part_parser_data ppdata = {};
> int res, irq;
>
> /* Allocate memory for the device structure (and zero it) */
> @@ -2117,6 +2116,7 @@ static int atmel_nand_probe(struct platform_device *pdev)
> nand_chip = &host->nand_chip;
> host->dev = &pdev->dev;
> if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) {
> + nand_set_flash_node(nand_chip, pdev->dev.of_node);
> /* Only when CONFIG_OF is enabled of_node can be parsed */
> res = atmel_of_init_port(host, pdev->dev.of_node);
> if (res)
> @@ -2259,9 +2259,8 @@ static int atmel_nand_probe(struct platform_device *pdev)
> }
>
> mtd->name = "atmel_nand";
> - ppdata.of_node = pdev->dev.of_node;
> - res = mtd_device_parse_register(mtd, NULL, &ppdata,
> - host->board.parts, host->board.num_parts);
> + res = mtd_device_register(mtd, host->board.parts,
> + host->board.num_parts);
> if (!res)
> return res;
>
> diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c
> index 7bd4102fde42..a37659de025c 100644
> --- a/drivers/mtd/nand/brcmnand/brcmnand.c
> +++ b/drivers/mtd/nand/brcmnand/brcmnand.c
> @@ -1914,7 +1914,6 @@ static int brcmnand_init_cs(struct brcmnand_host *host)
> struct nand_chip *chip;
> int ret;
> u16 cfg_offs;
> - struct mtd_part_parser_data ppdata = { .of_node = dn };
>
> ret = of_property_read_u32(dn, "reg", &host->cs);
> if (ret) {
> @@ -1993,7 +1992,7 @@ static int brcmnand_init_cs(struct brcmnand_host *host)
> if (nand_scan_tail(mtd))
> return -ENXIO;
>
> - return mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
> + return mtd_device_register(mtd, NULL, 0);
> }
>
> static void brcmnand_save_restore_cs_config(struct brcmnand_host *host,
> diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
> index c72313d66cf6..8e351af31e53 100644
> --- a/drivers/mtd/nand/davinci_nand.c
> +++ b/drivers/mtd/nand/davinci_nand.c
> @@ -684,6 +684,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
>
> info->mtd.priv = &info->chip;
> info->mtd.dev.parent = &pdev->dev;
> + nand_set_flash_node(&info->chip, pdev->dev.of_node);
>
> info->chip.IO_ADDR_R = vaddr;
> info->chip.IO_ADDR_W = vaddr;
> @@ -839,13 +840,8 @@ syndrome_done:
> if (pdata->parts)
> ret = mtd_device_parse_register(&info->mtd, NULL, NULL,
> pdata->parts, pdata->nr_parts);
> - else {
> - struct mtd_part_parser_data ppdata;
> -
> - ppdata.of_node = pdev->dev.of_node;
> - ret = mtd_device_parse_register(&info->mtd, NULL, &ppdata,
> - NULL, 0);
> - }
> + else
> + ret = mtd_device_register(&info->mtd, NULL, 0);
> if (ret < 0)
> goto err;
>
> diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
> index dcb1f7f4873f..850546dc98c8 100644
> --- a/drivers/mtd/nand/fsl_elbc_nand.c
> +++ b/drivers/mtd/nand/fsl_elbc_nand.c
> @@ -748,6 +748,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
> /* Fill in fsl_elbc_mtd structure */
> priv->mtd.priv = chip;
> priv->mtd.dev.parent = priv->dev;
> + chip->flash_node = priv->dev->of_node;
Shouldn't we use the nand_set_flash_node() helper here? Here is a diff replacing
all 'chip->flash_node =' occurrences by nand_set_flash_node():
---->8----
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 850546d..bd6d493 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -748,7 +748,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
/* Fill in fsl_elbc_mtd structure */
priv->mtd.priv = chip;
priv->mtd.dev.parent = priv->dev;
- chip->flash_node = priv->dev->of_node;
+ nand_set_flash_node(chip, priv->dev->of_node);
/* set timeout to maximum */
priv->fmr = 15 << FMR_CWTO_SHIFT;
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 8ae2a23..f260831 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -883,7 +883,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
/* Fill in fsl_ifc_mtd structure */
priv->mtd.priv = chip;
priv->mtd.dev.parent = priv->dev;
- chip->flash_node = priv->dev->of_node;
+ nand_set_flash_node(chip, priv->dev->of_node);
/* fill in nand_chip structure */
/* set up function call table */
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index ffe416c..b3f4a01 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -181,7 +181,7 @@ static int fun_chip_init(struct fsl_upm_nand *fun,
if (!flash_np)
return -ENODEV;
- fun->chip.flash_node = flash_np;
+ nand_set_flash_node(&fun->chip, flash_np);
fun->mtd.name = kasprintf(GFP_KERNEL, "0x%llx.%s", (u64)io_res->start,
flash_np->name);
if (!fun->mtd.name) {
diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c
index 289a48c..d57a07a 100644
--- a/drivers/mtd/nand/gpio.c
+++ b/drivers/mtd/nand/gpio.c
@@ -267,7 +267,7 @@ static int gpio_nand_probe(struct platform_device *pdev)
chip->dev_ready = gpio_nand_devready;
}
- chip->flash_node = pdev->dev.of_node;
+ nand_set_flash_node(chip, pdev->dev.of_node);
chip->IO_ADDR_W = chip->IO_ADDR_R;
chip->ecc.mode = NAND_ECC_SOFT;
chip->options = gpiomtd->plat.options;
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index 90e49cc..5a9b696 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -1900,7 +1900,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
/* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
chip->priv = this;
- chip->flash_node = this->pdev->dev.of_node;
+ nand_set_flash_node(chip, this->pdev->dev.of_node);
chip->select_chip = gpmi_select_chip;
chip->cmd_ctrl = gpmi_cmd_ctrl;
chip->dev_ready = gpmi_dev_ready;
diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c
index 3ccad8c..57c4b71 100644
--- a/drivers/mtd/nand/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/lpc32xx_mlc.c
@@ -681,7 +681,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
host->pdata = dev_get_platdata(&pdev->dev);
nand_chip->priv = host; /* link the private data structures */
- nand_chip->flash_node = pdev->dev.of_node;
+ nand_set_flash_node(nand_chip, pdev->dev.of_node);
mtd->priv = nand_chip;
mtd->dev.parent = &pdev->dev;
diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c
index 9cb8206..277626e 100644
--- a/drivers/mtd/nand/lpc32xx_slc.c
+++ b/drivers/mtd/nand/lpc32xx_slc.c
@@ -802,7 +802,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
mtd = &host->mtd;
chip = &host->nand_chip;
chip->priv = host;
- chip->flash_node = pdev->dev.of_node;
+ nand_set_flash_node(chip, pdev->dev.of_node);
mtd->priv = chip;
mtd->owner = THIS_MODULE;
mtd->dev.parent = &pdev->dev;
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 0fc4f3a..7922d31 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -1524,7 +1524,7 @@ static int mxcnd_probe(struct platform_device *pdev)
this->chip_delay = 5;
this->priv = host;
- this->flash_node = pdev->dev.of_node,
+ nand_set_flash_node(this, pdev->dev.of_node),
this->dev_ready = mxc_nand_dev_ready;
this->cmdfunc = mxc_nand_command;
this->read_byte = mxc_nand_read_byte;
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 33718dc..e307576 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1687,7 +1687,7 @@ static int omap_nand_probe(struct platform_device *pdev)
mtd->dev.parent = &pdev->dev;
nand_chip = &info->nand;
nand_chip->ecc.priv = NULL;
- nand_chip->flash_node = pdata->of_node;
+ nand_set_flash_node(nand_chip, pdata->of_node);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
nand_chip->IO_ADDR_R = devm_ioremap_resource(&pdev->dev, res);
diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c
index 0728ddc..5c21416 100644
--- a/drivers/mtd/nand/orion_nand.c
+++ b/drivers/mtd/nand/orion_nand.c
@@ -126,7 +126,7 @@ static int __init orion_nand_probe(struct platform_device *pdev)
mtd->dev.parent = &pdev->dev;
nc->priv = board;
- nc->flash_node = pdev->dev.of_node;
+ nand_set_flash_node(nc, pdev->dev.of_node);
nc->IO_ADDR_R = nc->IO_ADDR_W = io_base;
nc->cmd_ctrl = orion_nand_cmd_ctrl;
nc->read_buf = orion_nand_read_buf;
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
index 034becc..06ac6c6 100644
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -57,7 +57,7 @@ static int plat_nand_probe(struct platform_device *pdev)
return PTR_ERR(data->io_base);
data->chip.priv = &data;
- data->chip.flash_node = pdev->dev.of_node;
+ nand_set_flash_node(&data->chip, pdev->dev.of_node);
data->mtd.priv = &data->chip;
data->mtd.dev.parent = &pdev->dev;
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index ec2ade9..57dc525 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -1122,7 +1122,7 @@ static int flctl_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, flctl);
flctl_mtd = &flctl->mtd;
nand = &flctl->chip;
- nand->flash_node = pdev->dev.of_node;
+ nand_set_flash_node(nand, pdev->dev.of_node);
flctl_mtd->priv = nand;
flctl_mtd->dev.parent = &pdev->dev;
flctl->pdev = pdev;
diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c
index f935985..bde4043 100644
--- a/drivers/mtd/nand/socrates_nand.c
+++ b/drivers/mtd/nand/socrates_nand.c
@@ -164,7 +164,7 @@ static int socrates_nand_probe(struct platform_device *ofdev)
host->dev = &ofdev->dev;
nand_chip->priv = host; /* link the private data structures */
- nand_chip->flash_node = ofdev->dev.of_node;
+ nand_set_flash_node(nand_chip, ofdev->dev.of_node);
mtd->priv = nand_chip;
mtd->name = "socrates_nand";
mtd->dev.parent = &ofdev->dev;
diff --git a/drivers/staging/mt29f_spinand/mt29f_spinand.c b/drivers/staging/mt29f_spinand/mt29f_spinand.c
index bd9b5b0..49807de 100644
--- a/drivers/staging/mt29f_spinand/mt29f_spinand.c
+++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c
@@ -896,7 +896,7 @@ static int spinand_probe(struct spi_device *spi_nand)
pr_info("%s: disable ecc failed!\n", __func__);
#endif
- chip->flash_node = spi_nand->dev.of_node;
+ nand_set_flash_node(chip, spi_nand->dev.of_node);
chip->priv = info;
chip->read_buf = spinand_read_buf;
chip->write_buf = spinand_write_buf;
--
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