diff options
Diffstat (limited to 'drivers/mtd/devices/slram.c')
| -rw-r--r-- | drivers/mtd/devices/slram.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index 84fa91392a8c..6faee6c6958c 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -1,6 +1,6 @@ /*====================================================================== - $Id: slram.c,v 1.34 2005/01/06 21:16:42 jwboyer Exp $ + $Id: slram.c,v 1.36 2005/11/07 11:14:25 gleixner Exp $ This driver provides a method to access memory not used by the kernel itself (i.e. if the kernel commandline mem=xxx is used). To actually @@ -18,14 +18,14 @@ <start>: start of the memory region, decimal or hex (0xabcdef) <end/offset>: end of the memory region. It's possible to use +0x1234 to specify the offset instead of the absolute address - + NOTE: With slram it's only possible to map a contigous memory region. Therfore if there's a device mapped somewhere in the region specified slram will fail to load (see kernel log if modprobe fails). - - + Jochen Schaeuble <psionic@psionic.de> ======================================================================*/ @@ -89,10 +89,10 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr) if (instr->addr + instr->len > mtd->size) { return(-EINVAL); } - + memset(priv->start + instr->addr, 0xff, instr->len); - /* This'll catch a few races. Free the thing before returning :) + /* This'll catch a few races. Free the thing before returning :) * I don't feel at all ashamed. This kind of thing is possible anyway * with flash, but unlikely. */ @@ -170,12 +170,12 @@ static int register_device(char *name, unsigned long start, unsigned long length } (*curmtd)->mtdinfo = kmalloc(sizeof(struct mtd_info), GFP_KERNEL); (*curmtd)->next = NULL; - + if ((*curmtd)->mtdinfo) { memset((char *)(*curmtd)->mtdinfo, 0, sizeof(struct mtd_info)); (*curmtd)->mtdinfo->priv = kmalloc(sizeof(slram_priv_t), GFP_KERNEL); - + if (!(*curmtd)->mtdinfo->priv) { kfree((*curmtd)->mtdinfo); (*curmtd)->mtdinfo = NULL; @@ -188,7 +188,7 @@ static int register_device(char *name, unsigned long start, unsigned long length E("slram: Cannot allocate new MTD device.\n"); return(-ENOMEM); } - + if (!(((slram_priv_t *)(*curmtd)->mtdinfo->priv)->start = ioremap(start, length))) { E("slram: ioremap failed\n"); @@ -223,7 +223,7 @@ static int register_device(char *name, unsigned long start, unsigned long length T("slram: Mapped from 0x%p to 0x%p\n", ((slram_priv_t *)(*curmtd)->mtdinfo->priv)->start, ((slram_priv_t *)(*curmtd)->mtdinfo->priv)->end); - return(0); + return(0); } static void unregister_devices(void) @@ -256,7 +256,7 @@ static int parse_cmdline(char *devname, char *szstart, char *szlength) char *buffer; unsigned long devstart; unsigned long devlength; - + if ((!devname) || (!szstart) || (!szlength)) { unregister_devices(); return(-EINVAL); @@ -264,7 +264,7 @@ static int parse_cmdline(char *devname, char *szstart, char *szlength) devstart = simple_strtoul(szstart, &buffer, 0); devstart = handle_unit(devstart, buffer); - + if (*(szlength) != '+') { devlength = simple_strtoul(szlength, &buffer, 0); devlength = handle_unit(devlength, buffer) - devstart; @@ -278,7 +278,7 @@ static int parse_cmdline(char *devname, char *szstart, char *szlength) E("slram: Illegal start / length parameter.\n"); return(-EINVAL); } - + if ((devstart = register_device(devname, devstart, devlength))){ unregister_devices(); return((int)devstart); @@ -335,7 +335,7 @@ static int init_slram(void) } #else int count; - + for (count = 0; (map[count]) && (count < SLRAM_MAX_DEVICES_PARAMS); count++) { } @@ -350,10 +350,10 @@ static int init_slram(void) if (parse_cmdline(devname, map[i * 3 + 1], map[i * 3 + 2])!=0) { return(-EINVAL); } - + } #endif /* !MODULE */ - + return(0); } |