diff options
Diffstat (limited to 'drivers/mtd/maps/pmcmsp-flash.c')
| -rw-r--r-- | drivers/mtd/maps/pmcmsp-flash.c | 87 |
1 files changed, 65 insertions, 22 deletions
diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c index 02bde8c982e..744ca5cacc9 100644 --- a/drivers/mtd/maps/pmcmsp-flash.c +++ b/drivers/mtd/maps/pmcmsp-flash.c @@ -3,7 +3,7 @@ * Config with both CFI and JEDEC device support. * * Basically physmap.c with the addition of partitions and - * an array of mapping info to accomodate more than one flash type per board. + * an array of mapping info to accommodate more than one flash type per board. * * Copyright 2005-2007 PMC-Sierra, Inc. * @@ -28,6 +28,7 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include <linux/slab.h> #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> @@ -46,11 +47,11 @@ static struct mtd_partition **msp_parts; static struct map_info *msp_maps; static int fcnt; -#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n",__FUNCTION__,__LINE__) +#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n", __func__, __LINE__) -int __init init_msp_flash(void) +static int __init init_msp_flash(void) { - int i, j; + int i, j, ret = -ENOMEM; int offset, coff; char *env; int pcnt; @@ -75,14 +76,16 @@ int __init init_msp_flash(void) printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt); msp_flash = kmalloc(fcnt * sizeof(struct map_info *), GFP_KERNEL); + if (!msp_flash) + return -ENOMEM; + msp_parts = kmalloc(fcnt * sizeof(struct mtd_partition *), GFP_KERNEL); + if (!msp_parts) + goto free_msp_flash; + msp_maps = kcalloc(fcnt, sizeof(struct mtd_info), GFP_KERNEL); - if (!msp_flash || !msp_parts || !msp_maps) { - kfree(msp_maps); - kfree(msp_parts); - kfree(msp_flash); - return -ENOMEM; - } + if (!msp_maps) + goto free_msp_parts; /* loop over the flash devices, initializing each */ for (i = 0; i < fcnt; i++) { @@ -100,13 +103,18 @@ int __init init_msp_flash(void) msp_parts[i] = kcalloc(pcnt, sizeof(struct mtd_partition), GFP_KERNEL); + if (!msp_parts[i]) + goto cleanup_loop; /* now initialize the devices proper */ flash_name[5] = '0' + i; env = prom_getenv(flash_name); - if (sscanf(env, "%x:%x", &addr, &size) < 2) - return -ENXIO; + if (sscanf(env, "%x:%x", &addr, &size) < 2) { + ret = -ENXIO; + kfree(msp_parts[i]); + goto cleanup_loop; + } addr = CPHYSADDR(addr); printk(KERN_NOTICE @@ -122,13 +130,23 @@ int __init init_msp_flash(void) */ if (size > CONFIG_MSP_FLASH_MAP_LIMIT) size = CONFIG_MSP_FLASH_MAP_LIMIT; + msp_maps[i].virt = ioremap(addr, size); + if (msp_maps[i].virt == NULL) { + ret = -ENXIO; + kfree(msp_parts[i]); + goto cleanup_loop; + } + msp_maps[i].bankwidth = 1; - msp_maps[i].name = strncpy(kmalloc(7, GFP_KERNEL), - flash_name, 7); + msp_maps[i].name = kmalloc(7, GFP_KERNEL); + if (!msp_maps[i].name) { + iounmap(msp_maps[i].virt); + kfree(msp_parts[i]); + goto cleanup_loop; + } - if (msp_maps[i].virt == NULL) - return -ENXIO; + msp_maps[i].name = strncpy(msp_maps[i].name, flash_name, 7); for (j = 0; j < pcnt; j++) { part_name[5] = '0' + i; @@ -136,8 +154,14 @@ int __init init_msp_flash(void) env = prom_getenv(part_name); - if (sscanf(env, "%x:%x:%n", &offset, &size, &coff) < 2) - return -ENXIO; + if (sscanf(env, "%x:%x:%n", &offset, &size, + &coff) < 2) { + ret = -ENXIO; + kfree(msp_maps[i].name); + iounmap(msp_maps[i].virt); + kfree(msp_parts[i]); + goto cleanup_loop; + } msp_parts[i][j].size = size; msp_parts[i][j].offset = offset; @@ -149,22 +173,41 @@ int __init init_msp_flash(void) msp_flash[i] = do_map_probe("cfi_probe", &msp_maps[i]); if (msp_flash[i]) { msp_flash[i]->owner = THIS_MODULE; - add_mtd_partitions(msp_flash[i], msp_parts[i], pcnt); + mtd_device_register(msp_flash[i], msp_parts[i], pcnt); } else { printk(KERN_ERR "map probe failed for flash\n"); - return -ENXIO; + ret = -ENXIO; + kfree(msp_maps[i].name); + iounmap(msp_maps[i].virt); + kfree(msp_parts[i]); + goto cleanup_loop; } } return 0; + +cleanup_loop: + while (i--) { + mtd_device_unregister(msp_flash[i]); + map_destroy(msp_flash[i]); + kfree(msp_maps[i].name); + iounmap(msp_maps[i].virt); + kfree(msp_parts[i]); + } + kfree(msp_maps); +free_msp_parts: + kfree(msp_parts); +free_msp_flash: + kfree(msp_flash); + return ret; } static void __exit cleanup_msp_flash(void) { int i; - for (i = 0; i < sizeof(msp_flash) / sizeof(struct mtd_info **); i++) { - del_mtd_partitions(msp_flash[i]); + for (i = 0; i < fcnt; i++) { + mtd_device_unregister(msp_flash[i]); map_destroy(msp_flash[i]); iounmap((void *)msp_maps[i].virt); |