diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/sharpsl.c | 53 |
1 files changed, 29 insertions, 24 deletions
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c index 0a99188a7730..6851806b7015 100644 --- a/drivers/mtd/nand/sharpsl.c +++ b/drivers/mtd/nand/sharpsl.c @@ -26,6 +26,11 @@ #include <mach/hardware.h> #include <asm/mach-types.h> +struct sharpsl_nand { + struct mtd_info mtd; + struct nand_chip chip; +}; + static void __iomem *sharpsl_io_base; /* register offset */ @@ -46,11 +51,6 @@ static void __iomem *sharpsl_io_base; #define FLCE0 (1 << 0) /* - * MTD structure for SharpSL - */ -static struct mtd_info *sharpsl_mtd = NULL; - -/* * Define partitions for flash device */ #define DEFAULT_NUM_PARTITIONS 3 @@ -157,10 +157,11 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev) struct mtd_partition *sharpsl_partition_info; struct resource *r; int err = 0; + struct sharpsl_nand *sharpsl; /* Allocate memory for MTD device structure and private data */ - sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); - if (!sharpsl_mtd) { + sharpsl = kzalloc(sizeof(struct sharpsl_nand), GFP_KERNEL); + if (!sharpsl) { printk("Unable to allocate SharpSL NAND MTD device structure.\n"); return -ENOMEM; } @@ -176,20 +177,18 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev) sharpsl_io_base = ioremap(r->start, resource_size(r)); if (!sharpsl_io_base) { printk("ioremap to access Sharp SL NAND chip failed\n"); - kfree(sharpsl_mtd); - return -EIO; + err = -EIO; + goto err_ioremap; } /* Get pointer to private data */ - this = (struct nand_chip *)(&sharpsl_mtd[1]); - - /* Initialize structures */ - memset(sharpsl_mtd, 0, sizeof(struct mtd_info)); - memset(this, 0, sizeof(struct nand_chip)); + this = (struct nand_chip *)(&sharpsl->chip); /* Link the private data with the MTD structure */ - sharpsl_mtd->priv = this; - sharpsl_mtd->owner = THIS_MODULE; + sharpsl->mtd.priv = this; + sharpsl->mtd.owner = THIS_MODULE; + + platform_set_drvdata(pdev, sharpsl); /* * PXA initialize @@ -218,16 +217,17 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev) this->ecc.correct = nand_correct_data; /* Scan to find existence of the device */ - err = nand_scan(sharpsl_mtd, 1); + err = nand_scan(&sharpsl->mtd, 1); if (err) { + platform_set_drvdata(pdev, NULL); iounmap(sharpsl_io_base); - kfree(sharpsl_mtd); + kfree(sharpsl); return err; } /* Register the partitions */ - sharpsl_mtd->name = "sharpsl-nand"; - nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, &sharpsl_partition_info, 0); + sharpsl->mtd.name = "sharpsl-nand"; + nr_partitions = parse_mtd_partitions(&sharpsl->mtd, part_probes, &sharpsl_partition_info, 0); if (nr_partitions <= 0) { nr_partitions = DEFAULT_NUM_PARTITIONS; @@ -247,13 +247,14 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev) } } - add_mtd_partitions(sharpsl_mtd, sharpsl_partition_info, nr_partitions); + add_mtd_partitions(&sharpsl->mtd, sharpsl_partition_info, nr_partitions); /* Return happy */ return 0; +err_ioremap: err_get_res: - kfree(sharpsl_mtd); + kfree(sharpsl); return err; } @@ -262,13 +263,17 @@ err_get_res: */ static int __devexit sharpsl_nand_remove(struct platform_device *pdev) { + struct sharpsl_nand *sharpsl = platform_get_drvdata(pdev); + /* Release resources, unregister device */ - nand_release(sharpsl_mtd); + nand_release(&sharpsl->mtd); + + platform_set_drvdata(pdev, NULL); iounmap(sharpsl_io_base); /* Free the MTD device structure */ - kfree(sharpsl_mtd); + kfree(sharpsl); return 0; } |