diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/maps/uclinux.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c index c3bb304eca07..299bf88a6f41 100644 --- a/drivers/mtd/maps/uclinux.c +++ b/drivers/mtd/maps/uclinux.c @@ -67,10 +67,16 @@ static int __init uclinux_mtd_init(void) printk("uclinux[mtd]: RAM probe address=0x%x size=0x%x\n", (int) mapp->phys, (int) mapp->size); - mapp->virt = ioremap_nocache(mapp->phys, mapp->size); + /* + * The filesystem is guaranteed to be in direct mapped memory. It is + * directly following the kernels own bss region. Following the same + * mechanism used by architectures setting up traditional initrds we + * use phys_to_virt to get the virtual address of its start. + */ + mapp->virt = phys_to_virt(mapp->phys); if (mapp->virt == 0) { - printk("uclinux[mtd]: ioremap_nocache() failed\n"); + printk("uclinux[mtd]: no virtual mapping?\n"); return(-EIO); } @@ -79,7 +85,6 @@ static int __init uclinux_mtd_init(void) mtd = do_map_probe("map_ram", mapp); if (!mtd) { printk("uclinux[mtd]: failed to find a mapping?\n"); - iounmap(mapp->virt); return(-ENXIO); } @@ -102,10 +107,8 @@ static void __exit uclinux_mtd_cleanup(void) map_destroy(uclinux_ram_mtdinfo); uclinux_ram_mtdinfo = NULL; } - if (uclinux_ram_map.virt) { - iounmap((void *) uclinux_ram_map.virt); + if (uclinux_ram_map.virt) uclinux_ram_map.virt = 0; - } } /****************************************************************************/ |