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Commit 19299b1a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6 

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  Revert "usb-storage: implement autosuspend"
  USB: disable autosuspend by default for non-hubs
parents f3da54ba d526875d

drivers/usb/core/quirks.c

+6 −0
Original line number Diff line number Diff line
@@ -152,4 +152,10 @@ void usb_detect_quirks(struct usb_device *udev) 
	/* do any special quirk handling here if needed */

	if (udev->quirks & USB_QUIRK_NO_AUTOSUSPEND)

		usb_autosuspend_quirk(udev);



	/* By default, disable autosuspend for all non-hubs */

#ifdef	CONFIG_USB_SUSPEND

	if (udev->descriptor.bDeviceClass != USB_CLASS_HUB)

		udev->autosuspend_delay = -1;

#endif

}

drivers/usb/storage/scsiglue.c

+4 −9
Original line number Diff line number Diff line
@@ -285,15 +285,10 @@ static int device_reset(struct scsi_cmnd *srb) 


	US_DEBUGP("%s called\n", __FUNCTION__);



	result = usb_autopm_get_interface(us->pusb_intf);

	if (result == 0) {



	/* lock the device pointers and do the reset */

	mutex_lock(&(us->dev_mutex));

	result = us->transport_reset(us);

	mutex_unlock(&us->dev_mutex);

		usb_autopm_put_interface(us->pusb_intf);

	}



	return result < 0 ? FAILED : SUCCESS;

}

drivers/usb/storage/usb.c

+7 −20
Original line number Diff line number Diff line
@@ -184,14 +184,16 @@ static int storage_suspend(struct usb_interface *iface, pm_message_t message) 
{

	struct us_data *us = usb_get_intfdata(iface);



	US_DEBUGP("%s\n", __FUNCTION__);



	/* Wait until no command is running */

	mutex_lock(&us->dev_mutex);



	US_DEBUGP("%s\n", __FUNCTION__);

	if (us->suspend_resume_hook)

		(us->suspend_resume_hook)(us, US_SUSPEND);



	/* When runtime PM is working, we'll set a flag to indicate

	 * whether we should autoresume when a SCSI request arrives. */



	mutex_unlock(&us->dev_mutex);

	return 0;

}
@@ -200,11 +202,13 @@ static int storage_resume(struct usb_interface *iface) 
{

	struct us_data *us = usb_get_intfdata(iface);



	US_DEBUGP("%s\n", __FUNCTION__);

	mutex_lock(&us->dev_mutex);



	US_DEBUGP("%s\n", __FUNCTION__);

	if (us->suspend_resume_hook)

		(us->suspend_resume_hook)(us, US_RESUME);



	mutex_unlock(&us->dev_mutex);

	return 0;

}
@@ -302,7 +306,6 @@ static int usb_stor_control_thread(void * __us) 
{

	struct us_data *us = (struct us_data *)__us;

	struct Scsi_Host *host = us_to_host(us);

	int autopm_rc;



	for(;;) {

		US_DEBUGP("*** thread sleeping.\n");
@@ -311,9 +314,6 @@ static int usb_stor_control_thread(void * __us) 
			

		US_DEBUGP("*** thread awakened.\n");



		/* Autoresume the device */

		autopm_rc = usb_autopm_get_interface(us->pusb_intf);



		/* lock the device pointers */

		mutex_lock(&(us->dev_mutex));
@@ -372,12 +372,6 @@ static int usb_stor_control_thread(void * __us) 
			us->srb->result = SAM_STAT_GOOD;

		}



		/* Did the autoresume fail? */

		else if (autopm_rc < 0) {

			US_DEBUGP("Could not wake device\n");

			us->srb->result = DID_ERROR << 16;

		}



		/* we've got a command, let's do it! */

		else {

			US_DEBUG(usb_stor_show_command(us->srb));
@@ -420,10 +414,6 @@ SkipForAbort: 


		/* unlock the device pointers */

		mutex_unlock(&us->dev_mutex);



		/* Start an autosuspend */

		if (autopm_rc == 0)

			usb_autopm_put_interface(us->pusb_intf);

	} /* for (;;) */



	/* Wait until we are told to stop */
@@ -941,7 +931,6 @@ retry: 
		/* Should we unbind if no devices were detected? */

	}



	usb_autopm_put_interface(us->pusb_intf);

	complete_and_exit(&us->scanning_done, 0);

}
@@ -1027,7 +1016,6 @@ static int storage_probe(struct usb_interface *intf, 
		goto BadDevice;

	}



	usb_autopm_get_interface(intf); /* dropped in the scanning thread */

	wake_up_process(th);



	return 0;
@@ -1065,7 +1053,6 @@ static struct usb_driver usb_storage_driver = { 
	.pre_reset =	storage_pre_reset,

	.post_reset =	storage_post_reset,

	.id_table =	storage_usb_ids,

	.supports_autosuspend = 1,

};



static int __init usb_stor_init(void)