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OpenCloudOS-Kernel
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mtd: nand: fsl_upm: use the mtd instance embedded in struct nand_chip 

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

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Boris BREZILLON 2015-12-10 09:00:04 +01:00 committed by Brian Norris
parent 5e9fb93dd3
commit 478d51f021
1 changed files with 16 additions and 13 deletions
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29
drivers/mtd/nand/fsl_upm.c
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@ -31,7 +31,6 @@
struct fsl_upm_nand {
struct device *dev;
struct mtd_info mtd;
struct nand_chip chip;
int last_ctrl;
struct mtd_partition *parts;
@ -49,7 +48,8 @@ struct fsl_upm_nand {
static inline struct fsl_upm_nand *to_fsl_upm_nand(struct mtd_info *mtdinfo)
{
return container_of(mtdinfo, struct fsl_upm_nand, mtd);
return container_of(mtd_to_nand(mtdinfo), struct fsl_upm_nand,
chip);
}
static int fun_chip_ready(struct mtd_info *mtd)
@ -66,9 +66,10 @@ static int fun_chip_ready(struct mtd_info *mtd)
static void fun_wait_rnb(struct fsl_upm_nand *fun)
{
if (fun->rnb_gpio[fun->mchip_number] >= 0) {
struct mtd_info *mtd = nand_to_mtd(&fun->chip);
int cnt = 1000000;
while (--cnt && !fun_chip_ready(&fun->mtd))
while (--cnt && !fun_chip_ready(mtd))
cpu_relax();
if (!cnt)
dev_err(fun->dev, "tired waiting for RNB\n");
@ -157,6 +158,7 @@ static int fun_chip_init(struct fsl_upm_nand *fun,
const struct device_node *upm_np,
const struct resource *io_res)
{
struct mtd_info *mtd = nand_to_mtd(&fun->chip);
int ret;
struct device_node *flash_np;
@ -174,30 +176,30 @@ static int fun_chip_init(struct fsl_upm_nand *fun,
if (fun->rnb_gpio[0] >= 0)
fun->chip.dev_ready = fun_chip_ready;
fun->mtd.priv = &fun->chip;
fun->mtd.dev.parent = fun->dev;
mtd->priv = &fun->chip;
mtd->dev.parent = fun->dev;
flash_np = of_get_next_child(upm_np, NULL);
if (!flash_np)
return -ENODEV;
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) {
mtd->name = kasprintf(GFP_KERNEL, "0x%llx.%s", (u64)io_res->start,
flash_np->name);
if (!mtd->name) {
ret = -ENOMEM;
goto err;
}
ret = nand_scan(&fun->mtd, fun->mchip_count);
ret = nand_scan(mtd, fun->mchip_count);
if (ret)
goto err;
ret = mtd_device_register(&fun->mtd, NULL, 0);
ret = mtd_device_register(mtd, NULL, 0);
err:
of_node_put(flash_np);
if (ret)
kfree(fun->mtd.name);
kfree(mtd->name);
return ret;
}
@ -321,10 +323,11 @@ err1:
static int fun_remove(struct platform_device *ofdev)
{
struct fsl_upm_nand *fun = dev_get_drvdata(&ofdev->dev);
struct mtd_info *mtd = nand_to_mtd(&fun->chip);
int i;
nand_release(&fun->mtd);
kfree(fun->mtd.name);
nand_release(mtd);
kfree(mtd->name);
for (i = 0; i < fun->mchip_count; i++) {
if (fun->rnb_gpio[i] < 0)