Merge tag 'for-linus-20121009' of git://git.infradead.org/mtd-2.6

Pull MTD updates from David Woodhouse:

 - Disable broken mtdchar mmap() on MMU systems
 - Additional ECC tests for NAND flash, and some test cleanups
 - New NAND and SPI chip support
 - Fixes/cleanup for SH FLCTL NAND controller driver
 - Improved hardware support for GPMI NAND controller
 - Conversions to device-tree support for various drivers
 - Removal of obsolete drivers (sbc8xxx, bcmring, etc.)
 - New LPC32xx drivers for MLC and SLC NAND
 - Further cleanup of NAND OOB/ECC handling
 - UAPI cleanup merge from David Howells (just moving files, since MTD
   headers were sorted out long ago to separate user-visible from kernel
   bits)

* tag 'for-linus-20121009' of git://git.infradead.org/mtd-2.6: (168 commits)
  mtd: Disable mtdchar mmap on MMU systems
  UAPI: (Scripted) Disintegrate include/mtd
  mtd: nand: detect Samsung K9GBG08U0A, K9GAG08U0F ID
  mtd: nand: decode Hynix MLC, 6-byte ID length
  mtd: nand: increase max OOB size to 640
  mtd: nand: add generic READ ID length calculation functions
  mtd: nand: split simple ID decode into its own function
  mtd: nand: split extended ID decoding into its own function
  mtd: nand: split BB marker options decoding into its own function
  mtd: nand: remove redundant ID read
  mtd: nand: remove unnecessary variable
  mtd: docg4: add missing HAS_IOMEM dependency
  mtd: gpmi: initialize the timing registers only one time
  mtd: gpmi: add EDO feature for imx6q
  mtd: gpmi: do not set the default values for the extra clocks
  mtd: gpmi: simplify the DLL setting code
  mtd: gpmi: add a new field for HW_GPMI_CTRL1
  mtd: gpmi: do not get the clock frequency in gpmi_begin()
  mtd: gpmi: add a new field for HW_GPMI_TIMING1
  mtd: add helpers to get the supportted ONFI timing mode
  ...

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;
-	}
 }
 
 /****************************************************************************/