Commit 48d70552 authored May 20, 2006 by Micon, David Committed by Linus Torvalds May 21, 2006

[PATCH] HID read busywait fix

Make a read of a HID device block until data is available.  Without it, the
read goes into a busy-wait loop until data is available.

Cc: Greg KH <greg@kroah.com>
Acked-by: Vojtech Pavlik <vojtech@suse.cz>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 9ccfc29c

drivers/usb/input/hiddev.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -317,6 +317,7 @@ static ssize_t hiddev_read(struct file * file, char __user * buffer, size_t coun
	}		}

	schedule();		schedule();
			set_current_state(TASK_INTERRUPTIBLE);
	}		}

	set_current_state(TASK_RUNNING);		set_current_state(TASK_RUNNING);