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authorAlan Stern <stern@rowland.harvard.edu>2007-02-20 15:00:53 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2007-02-23 15:03:46 -0800
commitb5e795f8df42936590ba9c606edc715fe3593284 (patch)
treeed0f132edc4d050407c4ba0b4582f167db86ba72 /include/linux/usb.h
parentaa084f3efe5fb7e9c0d5b54ce704f0de69bbf27c (diff)
downloadop-kernel-dev-b5e795f8df42936590ba9c606edc715fe3593284.zip
op-kernel-dev-b5e795f8df42936590ba9c606edc715fe3593284.tar.gz
USB: make autosuspend delay a module parameter
This patch (as859) makes the default USB autosuspend delay a module parameter of usbcore. By setting the delay value at boot time, users will be able to prevent the system from autosuspending devices which for some reason can't handle it. The patch also stores the autosuspend delay as a per-device value. A later patch will allow the user to change the value, tailoring the delay for each individual device. A delay value of 0 will prevent autosuspend. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 37e522e..87dc75a 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -389,10 +389,13 @@ struct usb_device {
int pm_usage_cnt; /* usage counter for autosuspend */
u32 quirks; /* quirks of the whole device */
+
#ifdef CONFIG_PM
struct delayed_work autosuspend; /* for delayed autosuspends */
struct mutex pm_mutex; /* protects PM operations */
+ unsigned autosuspend_delay; /* in jiffies */
+
unsigned auto_pm:1; /* autosuspend/resume in progress */
unsigned do_remote_wakeup:1; /* remote wakeup should be enabled */
#endif
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