linux-kernel - [patch 2/3] fastboot: turn the USB hostcontroller initcalls into async initcalls

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Date:	Fri, 18 Jul 2008 15:16:53 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	linux-kernel@...r.kernel.org
Cc:	Arjan van de Ven <arjan@...radead.org>, mingo@...e.hu
Subject: [patch 2/3] fastboot: turn the USB hostcontroller initcalls into
 async initcalls

From: Arjan van de Ven <arjan@...ux.intel.com>
Subject: [PATCH] fastboot: turn the USB hostcontroller initcalls into async initcalls

the USB host controller init calls take a long time, mostly due to a
"minimally 100 msec" delay *per port* during initialization.
These are prime candidates for going in parallel to everything else.

The USB device ordering is not affected by this due to the
serialized-within-eachother property of async initcalls.

Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>
---
 drivers/usb/host/ehci-hcd.c |    2 +-
 drivers/usb/host/ohci-hcd.c |    2 +-
 drivers/usb/host/uhci-hcd.c |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 369a8a5..8f84b17 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1101,7 +1101,7 @@ clean0:
 #endif
 	return retval;
 }
-module_init(ehci_hcd_init);
+module_init_async(ehci_hcd_init);
 
 static void __exit ehci_hcd_cleanup(void)
 {
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index a8160d6..e060ed1 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1165,7 +1165,7 @@ static int __init ohci_hcd_mod_init(void)
 
 	return retval;
 }
-module_init(ohci_hcd_mod_init);
+module_init_async(ohci_hcd_mod_init);
 
 static void __exit ohci_hcd_mod_exit(void)
 {
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 3a7bfe7..f2a05ac 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -999,7 +999,7 @@ static void __exit uhci_hcd_cleanup(void)
 	kfree(errbuf);
 }
 
-module_init(uhci_hcd_init);
+module_init_async(uhci_hcd_init);
 module_exit(uhci_hcd_cleanup);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
-- 
1.5.5.1

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