1 files changed, 92 insertions, 0 deletions

diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch b/meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch
new file mode 100644
index 0000000000..d1ff95a39f
--- /dev/null
+++ b/meta-moblin/packages/linux/linux-moblin-2.6.27/0028-fastboot-sync-the-async-execution-before-late_initc.patch
@@ -0,0 +1,92 @@
+From 660625fb93f2fc0e633da9cb71d13d895b385f64 Mon Sep 17 00:00:00 2001
+From: Arjan van de Ven <arjan@linux.intel.com>
+Date: Sun, 20 Jul 2008 09:00:41 -0700
+Subject: [PATCH] fastboot: sync the async execution before late_initcall and move level 6s (sync) first
+
+Rene Herman points out several cases where it's basically needed to have
+all level 6/6a/6s calls done before the level 7 (late_initcall) code
+runs. This patch adds a sync point in the transition from the 6's to the
+7's.
+
+Second, this patch makes sure that level 6s (sync) happens before the
+async code starts, and puts a user in driver/pci in this category that
+needs to happen before device init.
+
+Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
+Signed-off-by: Ingo Molnar <mingo@elte.hu>
+---
+ drivers/pci/pci.c                 |    2 +-
+ include/asm-generic/vmlinux.lds.h |    3 ++-
+ init/main.c                       |   14 +++++++++++++-
+ 3 files changed, 16 insertions(+), 3 deletions(-)
+
+Index: linux-2.6.27/drivers/pci/pci.c
+===================================================================
+--- linux-2.6.27.orig/drivers/pci/pci.c 2008-10-14 16:55:30.000000000 +0200
++++ linux-2.6.27/drivers/pci/pci.c      2008-10-14 17:01:42.000000000 +0200
+@@ -1909,7 +1909,7 @@ static int __devinit pci_setup(char *str
+ }
+ early_param("pci", pci_setup);
+ 
+-device_initcall(pci_init);
++device_initcall_sync(pci_init);
+ 
+ EXPORT_SYMBOL(pci_reenable_device);
+ EXPORT_SYMBOL(pci_enable_device_io);
+Index: linux-2.6.27/include/asm-generic/vmlinux.lds.h
+===================================================================
+--- linux-2.6.27.orig/include/asm-generic/vmlinux.lds.h 2008-10-14 17:00:59.000000000 +0200
++++ linux-2.6.27/include/asm-generic/vmlinux.lds.h      2008-10-14 17:01:42.000000000 +0200
+@@ -376,11 +376,12 @@
+        *(.initcall5.init)                                              \
+        *(.initcall5s.init)                                             \
+        *(.initcallrootfs.init)                                         \
++       *(.initcall6s.init)                                             \
+        __async_initcall_start = .;                                     \
+        *(.initcall6a.init)                                             \
+        __async_initcall_end = .;                                       \
+        *(.initcall6.init)                                              \
+-       *(.initcall6s.init)                                             \
++       __device_initcall_end = .;                                      \
+        *(.initcall7.init)                                              \
+        *(.initcall7s.init)
+ 
+Index: linux-2.6.27/init/main.c
+===================================================================
+--- linux-2.6.27.orig/init/main.c       2008-10-14 17:01:38.000000000 +0200
++++ linux-2.6.27/init/main.c    2008-10-14 17:01:42.000000000 +0200
+@@ -746,6 +746,7 @@ int do_one_initcall(initcall_t fn)
+ 
+ extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
+ extern initcall_t __async_initcall_start[], __async_initcall_end[];
++extern initcall_t __device_initcall_end[];
+ 
+ static void __init do_async_initcalls(struct work_struct *dummy)
+ {
+@@ -767,7 +768,13 @@ static void __init do_initcalls(void)
+ {
+        initcall_t *call;
+        static DECLARE_WORK(async_work, do_async_initcalls);
+-       int phase = 0; /* 0 = levels 0 - 6, 1 = level 6a, 2 = after level 6a */
++       /*
++        * 0 = levels 0 - 6,
++        * 1 = level 6a,
++        * 2 = after level 6a,
++        * 3 = after level 6
++        */
++       int phase = 0;
+ 
+        async_init_wq = create_singlethread_workqueue("kasyncinit");
+ 
+@@ -778,6 +785,11 @@ static void __init do_initcalls(void)
+                }
+                if (phase == 1 && call >= __async_initcall_end)
+                        phase = 2;
++               if (phase == 2 && call >= __device_initcall_end) {
++                       phase = 3;
++                       /* make sure all async work is done before level 7 */
++                       flush_workqueue(async_init_wq);
++               }
+                if (phase != 1)
+                        do_one_initcall(*call);
+        }