[PATCH v4 37/58] mtd: nand: r852: 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>
---
 drivers/mtd/nand/r852.c | 34 +++++++++++++++-------------------
 drivers/mtd/nand/r852.h |  1 -
 2 files changed, 15 insertions(+), 20 deletions(-)

diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c
index ca05b20..1ac8ef2 100644
--- a/drivers/mtd/nand/r852.c
+++ b/drivers/mtd/nand/r852.c
@@ -634,25 +634,22 @@ static void r852_update_media_status(struct r852_device 
*dev)
  */
 static int r852_register_nand_device(struct r852_device *dev)
 {
-       dev->mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
-
-       if (!dev->mtd)
-               goto error1;
+       struct mtd_info *mtd = nand_to_mtd(dev->chip);
 
        WARN_ON(dev->card_registred);
 
-       dev->mtd->priv = dev->chip;
-       dev->mtd->dev.parent = &dev->pci_dev->dev;
+       mtd->priv = dev->chip;
+       mtd->dev.parent = &dev->pci_dev->dev;
 
        if (dev->readonly)
                dev->chip->options |= NAND_ROM;
 
        r852_engine_enable(dev);
 
-       if (sm_register_device(dev->mtd, dev->sm))
-               goto error2;
+       if (sm_register_device(mtd, dev->sm))
+               goto error1;
 
-       if (device_create_file(&dev->mtd->dev, &dev_attr_media_type)) {
+       if (device_create_file(&mtd->dev, &dev_attr_media_type)) {
                message("can't create media type sysfs attribute");
                goto error3;
        }
@@ -660,9 +657,7 @@ static int r852_register_nand_device(struct r852_device 
*dev)
        dev->card_registred = 1;
        return 0;
 error3:
-       nand_release(dev->mtd);
-error2:
-       kfree(dev->mtd);
+       nand_release(mtd);
 error1:
        /* Force card redetect */
        dev->card_detected = 0;
@@ -675,15 +670,15 @@ error1:
 
 static void r852_unregister_nand_device(struct r852_device *dev)
 {
+       struct mtd_info *mtd = nand_to_mtd(dev->chip);
+
        if (!dev->card_registred)
                return;
 
-       device_remove_file(&dev->mtd->dev, &dev_attr_media_type);
-       nand_release(dev->mtd);
+       device_remove_file(&mtd->dev, &dev_attr_media_type);
+       nand_release(mtd);
        r852_engine_disable(dev);
        dev->card_registred = 0;
-       kfree(dev->mtd);
-       dev->mtd = NULL;
 }
 
 /* Card state updater */
@@ -1031,6 +1026,7 @@ static int r852_suspend(struct device *device)
 static int r852_resume(struct device *device)
 {
        struct r852_device *dev = pci_get_drvdata(to_pci_dev(device));
+       struct mtd_info *mtd = nand_to_mtd(dev->chip);
 
        r852_disable_irqs(dev);
        r852_card_update_present(dev);
@@ -1050,9 +1046,9 @@ static int r852_resume(struct device *device)
        /* Otherwise, initialize the card */
        if (dev->card_registred) {
                r852_engine_enable(dev);
-               dev->chip->select_chip(dev->mtd, 0);
-               dev->chip->cmdfunc(dev->mtd, NAND_CMD_RESET, -1, -1);
-               dev->chip->select_chip(dev->mtd, -1);
+               dev->chip->select_chip(mtd, 0);
+               dev->chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+               dev->chip->select_chip(mtd, -1);
        }
 
        /* Program card detection IRQ */
diff --git a/drivers/mtd/nand/r852.h b/drivers/mtd/nand/r852.h
index e6a21d9..d042ddb 100644
--- a/drivers/mtd/nand/r852.h
+++ b/drivers/mtd/nand/r852.h
@@ -108,7 +108,6 @@
 
 struct r852_device {
        void __iomem *mmio;             /* mmio */
-       struct mtd_info *mtd;           /* mtd backpointer */
        struct nand_chip *chip;         /* nand chip backpointer */
        struct pci_dev *pci_dev;        /* pci backpointer */
 
-- 
2.1.4

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