[MTD] mtdram: Quick cleanup of the driver:
- Lindent - Removal of slram/phram functionality - Removal of most #ifdefs Signed-off-by: Joern Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Joern Engel
Thomas Gleixner
Родитель
7d200960d4
Коммит
c13cbf3b50
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@ -1,9 +1,10 @@
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/*
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* mtdram - a test mtd device
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* $Id: mtdram.c,v 1.35 2005/01/05 18:05:12 dwmw2 Exp $
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* $Id: mtdram.c,v 1.37 2005/04/21 03:42:11 joern Exp $
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* Author: Alexander Larsson <alex@cendio.se>
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*
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* Copyright (c) 1999 Alexander Larsson <alex@cendio.se>
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* Copyright (c) 2005 Joern Engel <joern@wh.fh-wedel.de>
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*
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* This code is GPL
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*
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@ -18,213 +19,140 @@
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#include <linux/mtd/compatmac.h>
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#include <linux/mtd/mtd.h>
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#ifndef CONFIG_MTDRAM_ABS_POS
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#define CONFIG_MTDRAM_ABS_POS 0
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#endif
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#if CONFIG_MTDRAM_ABS_POS > 0
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#include <asm/io.h>
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#endif
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#ifdef MODULE
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static unsigned long total_size = CONFIG_MTDRAM_TOTAL_SIZE;
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static unsigned long erase_size = CONFIG_MTDRAM_ERASE_SIZE;
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module_param(total_size,ulong,0);
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MODULE_PARM_DESC(total_size, "Total device size in KiB");
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module_param(erase_size,ulong,0);
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MODULE_PARM_DESC(erase_size, "Device erase block size in KiB");
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#define MTDRAM_TOTAL_SIZE (total_size * 1024)
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#define MTDRAM_ERASE_SIZE (erase_size * 1024)
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#else
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#define MTDRAM_TOTAL_SIZE (CONFIG_MTDRAM_TOTAL_SIZE * 1024)
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#define MTDRAM_ERASE_SIZE (CONFIG_MTDRAM_ERASE_SIZE * 1024)
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#endif
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#ifdef MODULE
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module_param(total_size, ulong, 0);
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MODULE_PARM_DESC(total_size, "Total device size in KiB");
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module_param(erase_size, ulong, 0);
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MODULE_PARM_DESC(erase_size, "Device erase block size in KiB");
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#endif
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// We could store these in the mtd structure, but we only support 1 device..
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static struct mtd_info *mtd_info;
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static int
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ram_erase(struct mtd_info *mtd, struct erase_info *instr)
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static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
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{
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DEBUG(MTD_DEBUG_LEVEL2, "ram_erase(pos:%ld, len:%ld)\n", (long)instr->addr, (long)instr->len);
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if (instr->addr + instr->len > mtd->size) {
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DEBUG(MTD_DEBUG_LEVEL1, "ram_erase() out of bounds (%ld > %ld)\n", (long)(instr->addr + instr->len), (long)mtd->size);
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return -EINVAL;
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}
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memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
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instr->state = MTD_ERASE_DONE;
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mtd_erase_callback(instr);
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if (instr->addr + instr->len > mtd->size)
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return -EINVAL;
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return 0;
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memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
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instr->state = MTD_ERASE_DONE;
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mtd_erase_callback(instr);
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return 0;
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}
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static int ram_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf)
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static int ram_point(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char **mtdbuf)
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{
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if (from + len > mtd->size)
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return -EINVAL;
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*mtdbuf = mtd->priv + from;
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*retlen = len;
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return 0;
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if (from + len > mtd->size)
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return -EINVAL;
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*mtdbuf = mtd->priv + from;
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*retlen = len;
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return 0;
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}
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static void ram_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from,
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size_t len)
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static void ram_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
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size_t len)
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{
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DEBUG(MTD_DEBUG_LEVEL2, "ram_unpoint\n");
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}
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static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char *buf)
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size_t *retlen, u_char *buf)
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{
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DEBUG(MTD_DEBUG_LEVEL2, "ram_read(pos:%ld, len:%ld)\n", (long)from, (long)len);
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if (from + len > mtd->size) {
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DEBUG(MTD_DEBUG_LEVEL1, "ram_read() out of bounds (%ld > %ld)\n", (long)(from + len), (long)mtd->size);
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return -EINVAL;
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}
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if (from + len > mtd->size)
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return -EINVAL;
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memcpy(buf, mtd->priv + from, len);
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memcpy(buf, mtd->priv + from, len);
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*retlen=len;
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return 0;
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*retlen = len;
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return 0;
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}
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static int ram_write(struct mtd_info *mtd, loff_t to, size_t len,
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size_t *retlen, const u_char *buf)
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size_t *retlen, const u_char *buf)
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{
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DEBUG(MTD_DEBUG_LEVEL2, "ram_write(pos:%ld, len:%ld)\n", (long)to, (long)len);
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if (to + len > mtd->size) {
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DEBUG(MTD_DEBUG_LEVEL1, "ram_write() out of bounds (%ld > %ld)\n", (long)(to + len), (long)mtd->size);
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return -EINVAL;
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}
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if (to + len > mtd->size)
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return -EINVAL;
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memcpy ((char *)mtd->priv + to, buf, len);
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memcpy((char *)mtd->priv + to, buf, len);
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*retlen=len;
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return 0;
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*retlen = len;
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return 0;
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}
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static void __exit cleanup_mtdram(void)
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{
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if (mtd_info) {
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del_mtd_device(mtd_info);
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#if CONFIG_MTDRAM_TOTAL_SIZE > 0
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if (mtd_info->priv)
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#if CONFIG_MTDRAM_ABS_POS > 0
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iounmap(mtd_info->priv);
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#else
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vfree(mtd_info->priv);
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#endif
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#endif
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kfree(mtd_info);
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}
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if (mtd_info) {
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del_mtd_device(mtd_info);
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if (mtd_info->priv)
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vfree(mtd_info->priv);
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kfree(mtd_info);
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}
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}
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int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
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unsigned long size, char *name)
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int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
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unsigned long size, char *name)
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{
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memset(mtd, 0, sizeof(*mtd));
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memset(mtd, 0, sizeof(*mtd));
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/* Setup the MTD structure */
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mtd->name = name;
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mtd->type = MTD_RAM;
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mtd->flags = MTD_CAP_RAM;
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mtd->size = size;
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mtd->erasesize = MTDRAM_ERASE_SIZE;
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mtd->priv = mapped_address;
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/* Setup the MTD structure */
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mtd->name = name;
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mtd->type = MTD_RAM;
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mtd->flags = MTD_CAP_RAM;
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mtd->size = size;
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mtd->erasesize = MTDRAM_ERASE_SIZE;
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mtd->priv = mapped_address;
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mtd->owner = THIS_MODULE;
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mtd->erase = ram_erase;
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mtd->point = ram_point;
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mtd->unpoint = ram_unpoint;
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mtd->read = ram_read;
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mtd->write = ram_write;
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mtd->owner = THIS_MODULE;
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mtd->erase = ram_erase;
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mtd->point = ram_point;
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mtd->unpoint = ram_unpoint;
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mtd->read = ram_read;
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mtd->write = ram_write;
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if (add_mtd_device(mtd)) {
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return -EIO;
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}
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return 0;
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if (add_mtd_device(mtd)) {
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return -EIO;
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}
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return 0;
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}
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#if CONFIG_MTDRAM_TOTAL_SIZE > 0
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#if CONFIG_MTDRAM_ABS_POS > 0
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static int __init init_mtdram(void)
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{
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void *addr;
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int err;
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/* Allocate some memory */
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mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
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if (!mtd_info)
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return -ENOMEM;
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addr = ioremap(CONFIG_MTDRAM_ABS_POS, MTDRAM_TOTAL_SIZE);
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if (!addr) {
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DEBUG(MTD_DEBUG_LEVEL1,
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"Failed to ioremap) memory region of size %ld at ABS_POS:%ld\n",
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(long)MTDRAM_TOTAL_SIZE, (long)CONFIG_MTDRAM_ABS_POS);
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kfree(mtd_info);
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mtd_info = NULL;
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return -ENOMEM;
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}
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err = mtdram_init_device(mtd_info, addr,
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MTDRAM_TOTAL_SIZE, "mtdram test device");
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if (err)
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{
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iounmap(addr);
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kfree(mtd_info);
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mtd_info = NULL;
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return err;
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}
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memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
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return err;
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}
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#else /* CONFIG_MTDRAM_ABS_POS > 0 */
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static int __init init_mtdram(void)
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{
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void *addr;
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int err;
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/* Allocate some memory */
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mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
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if (!mtd_info)
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return -ENOMEM;
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void *addr;
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int err;
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addr = vmalloc(MTDRAM_TOTAL_SIZE);
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if (!addr) {
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DEBUG(MTD_DEBUG_LEVEL1,
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"Failed to vmalloc memory region of size %ld\n",
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(long)MTDRAM_TOTAL_SIZE);
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kfree(mtd_info);
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mtd_info = NULL;
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return -ENOMEM;
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}
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err = mtdram_init_device(mtd_info, addr,
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MTDRAM_TOTAL_SIZE, "mtdram test device");
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if (err)
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{
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vfree(addr);
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kfree(mtd_info);
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mtd_info = NULL;
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return err;
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}
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memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
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return err;
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if (!total_size)
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return -EINVAL;
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/* Allocate some memory */
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mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
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if (!mtd_info)
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return -ENOMEM;
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addr = vmalloc(MTDRAM_TOTAL_SIZE);
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if (!addr) {
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kfree(mtd_info);
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mtd_info = NULL;
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return -ENOMEM;
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}
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err = mtdram_init_device(mtd_info, addr, MTDRAM_TOTAL_SIZE, "mtdram test device");
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if (err) {
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vfree(addr);
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kfree(mtd_info);
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mtd_info = NULL;
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return err;
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}
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memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
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return err;
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}
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#endif /* !(CONFIG_MTDRAM_ABS_POS > 0) */
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#else /* CONFIG_MTDRAM_TOTAL_SIZE > 0 */
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static int __init init_mtdram(void)
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{
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return 0;
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}
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#endif /* !(CONFIG_MTDRAM_TOTAL_SIZE > 0) */
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module_init(init_mtdram);
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module_exit(cleanup_mtdram);
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@ -232,4 +160,3 @@ module_exit(cleanup_mtdram);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Alexander Larsson <alexl@redhat.com>");
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MODULE_DESCRIPTION("Simulated MTD driver for testing");
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