Patch for USB wakeups

[Robert Spanton]

Hi,

A while back I posted a patch to this mailing list [1], but I don't think 
anyone noticed it.  I'm reposting it just in case:

According to Documentation/ABI/testing/sysfs-bus-usb in Linux, the
autosuspend files contain a negative number if autosuspend is disabled. At
the moment, powertop converts the number into an _unsigned_ long long int
before any comparison, which to me seems like the wrong thing to do.  
This patch converts it to a signed long long int instead.

[1] http://article.gmane.org/gmane.linux.power-management.powertop/1030/
match=according+documentation+abi+testing+sysfs+bus+usb+linux

Cheers,

Rob

And the patch:

Index: usb.c
===================================================================
--- usb.c	(revision 273)
+++ usb.c	(working copy)
@@ -89,7 +89,7 @@
 			fclose(file);
 			continue;
 		}
-		if (strtoull(line, NULL,10)<1)
+		if (strtoll(line, NULL,10)<0)
 			need_hint = 1;
 
 		fclose(file);