spelling fixes: arch/sh/

Spelling fixes in arch/sh/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/drivers/pci/ops-dreamcast.c b/arch/sh/drivers/pci/ops-dreamcast.c
index 381306c..e1284fc 100644
--- a/arch/sh/drivers/pci/ops-dreamcast.c
+++ b/arch/sh/drivers/pci/ops-dreamcast.c
@@ -57,7 +57,7 @@
  *
  * Also, we could very easily support both Type 0 and Type 1 configurations
  * here, but since it doesn't seem that there is any such implementation in
- * existance, we don't bother.
+ * existence, we don't bother.
  *
  * I suppose if someone actually gets around to ripping the chip out of
  * the BBA and hanging some more devices off of it, then this might be
diff --git a/arch/sh/drivers/pci/pci-st40.c b/arch/sh/drivers/pci/pci-st40.c
index d67656a..543417f 100644
--- a/arch/sh/drivers/pci/pci-st40.c
+++ b/arch/sh/drivers/pci/pci-st40.c
@@ -292,7 +292,7 @@
 			    PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
 			    PCI_COMMAND_IO);
 
-	/* Accesse to the 0xb0000000 -> 0xb6000000 area will go through to 0x10000000 -> 0x16000000
+	/* Access to the 0xb0000000 -> 0xb6000000 area will go through to 0x10000000 -> 0x16000000
 	 * on the PCI bus. This allows a nice 1-1 bus to phys mapping.
 	 */
 
@@ -315,7 +315,7 @@
 	ST40PCI_WRITE(CSR_MBAR0, 0);
 	ST40PCI_WRITE(LSR0, 0x0fff0001);
 
-	/* ... and set up the initial incomming window to expose all of RAM */
+	/* ... and set up the initial incoming window to expose all of RAM */
 	pci_set_rbar_region(7, memStart, memStart, memSize);
 
 	/* Maximise timeout values */
@@ -473,7 +473,7 @@
 
 	mask = r2p2(regionSize) - 0x10000;
 
-	/* Diable the region (in case currently in use, should never happen) */
+	/* Disable the region (in case currently in use, should never happen) */
 	ST40PCI_WRITE_INDEXED(RSR, region, 0);
 
 	/* Start of local address space to publish */
diff --git a/arch/sh/drivers/pci/pci-st40.h b/arch/sh/drivers/pci/pci-st40.h
index d729e0c..cf0d35b 100644
--- a/arch/sh/drivers/pci/pci-st40.h
+++ b/arch/sh/drivers/pci/pci-st40.h
@@ -4,7 +4,7 @@
  * May be copied or modified under the terms of the GNU General Public
  * License.  See linux/COPYING for more information.                            
  *
- * Defintions for the ST40 PCI hardware.
+ * Definitions for the ST40 PCI hardware.
  */
 
 #ifndef __PCI_ST40_H__