From: Boris BREZILLON <boris.brezillon@free-electrons.com>
Date: Thu, 10 Dec 2015 07:59:49 +0000 (+0100)
Subject: mtd: nand: ams-delta: use the mtd instance embedded in struct nand_chip
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=187d6ada2a129b3829c81b3e4f4bdf660859bb11;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

mtd: nand: ams-delta: use the mtd instance embedded in struct nand_chip

struct nand_chip now embeds an mtd device. Make use of this mtd instance
instead of allocating our own.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---

diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c
index b2b49c42920c..0f638c628a0d 100644
--- a/drivers/mtd/nand/ams-delta.c
+++ b/drivers/mtd/nand/ams-delta.c
@@ -183,19 +183,16 @@ static int ams_delta_init(struct platform_device *pdev)
 		return -ENXIO;
 
 	/* Allocate memory for MTD device structure and private data */
-	ams_delta_mtd = kzalloc(sizeof(struct mtd_info) +
-				sizeof(struct nand_chip), GFP_KERNEL);
-	if (!ams_delta_mtd) {
+	this = kzalloc(sizeof(struct nand_chip), GFP_KERNEL);
+	if (!this) {
 		printk (KERN_WARNING "Unable to allocate E3 NAND MTD device structure.\n");
 		err = -ENOMEM;
 		goto out;
 	}
 
+	ams_delta_mtd = nand_to_mtd(this);
 	ams_delta_mtd->owner = THIS_MODULE;
 
-	/* Get pointer to private data */
-	this = (struct nand_chip *) (&ams_delta_mtd[1]);
-
 	/* Link the private data with the MTD structure */
 	ams_delta_mtd->priv = this;
 
@@ -256,7 +253,7 @@ out_gpio:
 	gpio_free(AMS_DELTA_GPIO_PIN_NAND_RB);
 	iounmap(io_base);
 out_free:
-	kfree(ams_delta_mtd);
+	kfree(this);
  out:
 	return err;
 }
@@ -276,7 +273,7 @@ static int ams_delta_cleanup(struct platform_device *pdev)
 	iounmap(io_base);
 
 	/* Free the MTD device structure */
-	kfree(ams_delta_mtd);
+	kfree(mtd_to_nand(ams_delta_mtd));
 
 	return 0;
 }