Add patch to fix POWER virtual serial driver (rhbz 738096)

hvcs_pi_buf_alloc.patch

@@ -0,0 +1,43 @@
+
+The Power platform requires the partner info buffer to be page aligned
+otherwise it will fail the partner info hcall with H_PARAMETER. Switch
+from using kmalloc to allocate this buffer to __get_free_page to ensure
+page alignment.
+
+Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
+---
+
+ drivers/tty/hvc/hvcs.c |    6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff -puN drivers/tty/hvc/hvcs.c~hvcs_pi_buf_alloc drivers/tty/hvc/hvcs.c
+--- linux-2.6/drivers/tty/hvc/hvcs.c~hvcs_pi_buf_alloc	2011-09-09 16:00:25.000000000 -0500
++++ linux-2.6-bjking1/drivers/tty/hvc/hvcs.c	2011-09-09 16:07:08.000000000 -0500
+@@ -1532,7 +1532,7 @@ static int __devinit hvcs_initialize(voi
+ 		goto register_fail;
+ 	}
+ 
+-	hvcs_pi_buff = kmalloc(PAGE_SIZE, GFP_KERNEL);
++	hvcs_pi_buff = (unsigned long *) __get_free_page(GFP_KERNEL);
+ 	if (!hvcs_pi_buff) {
+ 		rc = -ENOMEM;
+ 		goto buff_alloc_fail;
+@@ -1548,7 +1548,7 @@ static int __devinit hvcs_initialize(voi
+ 	return 0;
+ 
+ kthread_fail:
+-	kfree(hvcs_pi_buff);
++	free_page((unsigned long)hvcs_pi_buff);
+ buff_alloc_fail:
+ 	tty_unregister_driver(hvcs_tty_driver);
+ register_fail:
+@@ -1597,7 +1597,7 @@ static void __exit hvcs_module_exit(void
+ 	kthread_stop(hvcs_task);
+ 
+ 	spin_lock(&hvcs_pi_lock);
+-	kfree(hvcs_pi_buff);
++	free_page((unsigned long)hvcs_pi_buff);
+ 	hvcs_pi_buff = NULL;
+ 	spin_unlock(&hvcs_pi_lock);
+ 
+_

kernel.spec

@@ -728,6 +728,8 @@ Patch13006: add-macbookair41-trackpad.patch
 Patch13007: add-macbookair41-keyboard.patch
 Patch13008: add-macbookair41-btusb.patch
 
+Patch13009: hvcs_pi_buf_alloc.patch
+
 Patch20000: utrace.patch
 
 # Flattened devicetree support
@@ -1340,6 +1342,8 @@ ApplyPatch add-macbookair41-trackpad.patch
 ApplyPatch add-macbookair41-keyboard.patch
 ApplyPatch add-macbookair41-btusb.patch
 
+ApplyPatch hvcs_pi_buf_alloc.patch
+
 # utrace.
 ApplyPatch utrace.patch
 
@@ -2053,6 +2057,7 @@ fi
 %changelog
 * Wed Sep 14 2011 Josh Boyer <jwboyer@redhat.com>
 - Add support for Macbook Air 4,1 keyboard, trackpad, and bluetooth
+- Add patch to fix HVCS on ppc64 (rhbz 738096)
 
 * Mon Sep 12 2011 Josh Boyer <jwboyer@redhat.com>
 - Linux 3.1-rc6