[PATCH v4 22/58] mtd: nand: gpio: use the mtd instance embedded in struct nand_chip

[Boris Brezillon]

struct nand_chip now embeds an mtd device. Make use of this mtd instance.

Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com>
---
Changes generated with the following coccinelle script

--->8---
virtual patch

@fix1@
identifier __chipfield, __mtdfield;
type __type;
@@
(
        __type {
                ...
                struct nand_chip __chipfield;
                ...
-               struct mtd_info __mtdfield;
                ...
        };
|
        __type {
                ...
-               struct mtd_info __mtdfield;
                ...
                struct nand_chip __chipfield;
                ...
        };
)

@fix2 depends on fix1@
identifier fix1.__chipfield, fix1.__mtdfield;
identifier __subfield;
type fix1.__type;
__type *__priv;
@@
(
-       __priv->__mtdfield.__subfield
+       nand_to_mtd(&__priv->__chipfield)->__subfield
|
-       &(__priv->__mtdfield)
+       nand_to_mtd(&__priv->__chipfield)
)
--->8---
---
 drivers/mtd/nand/gpio.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c
index d57a07a..99dd74c 100644
--- a/drivers/mtd/nand/gpio.c
+++ b/drivers/mtd/nand/gpio.c
@@ -35,12 +35,14 @@
 
 struct gpiomtd {
        void __iomem            *io_sync;
-       struct mtd_info         mtd_info;
        struct nand_chip        nand_chip;
        struct gpio_nand_platdata plat;
 };
 
-#define gpio_nand_getpriv(x) container_of(x, struct gpiomtd, mtd_info)
+static inline struct gpiomtd *gpio_nand_getpriv(struct mtd_info *mtd)
+{
+       return container_of(mtd_to_nand(mtd), struct gpiomtd, nand_chip);
+}
 
 
 #ifdef CONFIG_ARM
@@ -195,7 +197,7 @@ static int gpio_nand_remove(struct platform_device *pdev)
 {
        struct gpiomtd *gpiomtd = platform_get_drvdata(pdev);
 
-       nand_release(&gpiomtd->mtd_info);
+       nand_release(nand_to_mtd(&gpiomtd->nand_chip));
 
        if (gpio_is_valid(gpiomtd->plat.gpio_nwp))
                gpio_set_value(gpiomtd->plat.gpio_nwp, 0);
@@ -208,6 +210,7 @@ static int gpio_nand_probe(struct platform_device *pdev)
 {
        struct gpiomtd *gpiomtd;
        struct nand_chip *chip;
+       struct mtd_info *mtd;
        struct resource *res;
        int ret = 0;
 
@@ -274,24 +277,24 @@ static int gpio_nand_probe(struct platform_device *pdev)
        chip->chip_delay        = gpiomtd->plat.chip_delay;
        chip->cmd_ctrl          = gpio_nand_cmd_ctrl;
 
-       gpiomtd->mtd_info.priv  = chip;
-       gpiomtd->mtd_info.dev.parent = &pdev->dev;
+       mtd                     = nand_to_mtd(chip);
+       mtd->priv               = chip;
+       mtd->dev.parent         = &pdev->dev;
 
        platform_set_drvdata(pdev, gpiomtd);
 
        if (gpio_is_valid(gpiomtd->plat.gpio_nwp))
                gpio_direction_output(gpiomtd->plat.gpio_nwp, 1);
 
-       if (nand_scan(&gpiomtd->mtd_info, 1)) {
+       if (nand_scan(mtd, 1)) {
                ret = -ENXIO;
                goto err_wp;
        }
 
        if (gpiomtd->plat.adjust_parts)
-               gpiomtd->plat.adjust_parts(&gpiomtd->plat,
-                                          gpiomtd->mtd_info.size);
+               gpiomtd->plat.adjust_parts(&gpiomtd->plat, mtd->size);
 
-       ret = mtd_device_register(&gpiomtd->mtd_info, gpiomtd->plat.parts,
+       ret = mtd_device_register(mtd, gpiomtd->plat.parts,
                                  gpiomtd->plat.num_parts);
        if (!ret)
                return 0;
-- 
2.1.4

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