From: David Woodhouse <dwmw2@infradead.org>
Date: Mon, 24 Apr 2006 22:22:17 +0000 (+0100)
Subject: [PATCH] powerpc: Use check_legacy_ioport() on ppc32 too.
X-Git-Tag: v2.6.17-rc4~105^2~9
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1269277a5e7c6d7ae1852e648a8bcdb78035e9fa;p=linux-2.6

[PATCH] powerpc: Use check_legacy_ioport() on ppc32 too.

Some people report that we die on some Macs when we are expecting to
catch machine checks after poking at some random I/O address. I'd seen
it happen on my dual G4 with serial ports until we fixed those to use
OF, but now other users are reporting it with i8042.

This expands the use of check_legacy_ioport() to avoid that situation
even on 32-bit kernels.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 1d93e73a70..684ab1d49c 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -516,3 +516,11 @@ void probe_machine(void)
 
 	printk(KERN_INFO "Using %s machine description\n", ppc_md.name);
 }
+
+int check_legacy_ioport(unsigned long base_port)
+{
+	if (ppc_md.check_legacy_ioport == NULL)
+		return 0;
+	return ppc_md.check_legacy_ioport(base_port);
+}
+EXPORT_SYMBOL(check_legacy_ioport);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 13e91c4d70..4467c49903 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -594,14 +594,6 @@ void ppc64_terminate_msg(unsigned int src, const char *msg)
 	printk("[terminate]%04x %s\n", src, msg);
 }
 
-int check_legacy_ioport(unsigned long base_port)
-{
-	if (ppc_md.check_legacy_ioport == NULL)
-		return 0;
-	return ppc_md.check_legacy_ioport(base_port);
-}
-EXPORT_SYMBOL(check_legacy_ioport);
-
 void cpu_die(void)
 {
 	if (ppc_md.cpu_die)
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index bedb689b05..dff1e67b1d 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4301,7 +4301,7 @@ static int __init floppy_init(void)
 	}
 
 	use_virtual_dma = can_use_virtual_dma & 1;
-#if defined(CONFIG_PPC64)
+#if defined(CONFIG_PPC_MERGE)
 	if (check_legacy_ioport(FDC1)) {
 		del_timer(&fd_timeout);
 		err = -ENODEV;
diff --git a/drivers/input/serio/i8042-io.h b/drivers/input/serio/i8042-io.h
index 9a92216442..cc21914fbc 100644
--- a/drivers/input/serio/i8042-io.h
+++ b/drivers/input/serio/i8042-io.h
@@ -67,14 +67,14 @@ static inline int i8042_platform_init(void)
  * On some platforms touching the i8042 data register region can do really
  * bad things. Because of this the region is always reserved on such boxes.
  */
-#if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__) && !defined(CONFIG_PPC64)
+#if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__) && !defined(CONFIG_PPC_MERGE)
 	if (!request_region(I8042_DATA_REG, 16, "i8042"))
 		return -EBUSY;
 #endif
 
         i8042_reset = 1;
 
-#if defined(CONFIG_PPC64)
+#if defined(CONFIG_PPC_MERGE)
 	if (check_legacy_ioport(I8042_DATA_REG))
 		return -EBUSY;
 	if (!request_region(I8042_DATA_REG, 16, "i8042"))
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 68efbea379..f1c2469b88 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -9,6 +9,9 @@
  * 2 of the License, or (at your option) any later version.
  */
 
+/* Check of existence of legacy devices */
+extern int check_legacy_ioport(unsigned long base_port);
+
 #ifndef CONFIG_PPC64
 #include <asm-ppc/io.h>
 #else
@@ -437,9 +440,6 @@ out:
 #define dma_cache_wback(_start,_size)		do { } while (0)
 #define dma_cache_wback_inv(_start,_size)	do { } while (0)
 
-/* Check of existence of legacy devices */
-extern int check_legacy_ioport(unsigned long base_port);
-
 
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem