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Date: Sun, 22 Feb 2009 19:45:21 +0000 From: Alistair John Strachan <alistair@...zero.co.uk> To: Matthew Garrett <mjg59@...f.ucam.org> Cc: "Rafael J. Wysocki" <rjw@...k.pl>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: isight_firmware interacts badly with suspend/resume Hi, A 2.6.29-rc5 S3 suspend/resume cycle seems to break on my 2007 Macbook if I have isight_firmware loaded and a valid isight firmware in /lib/firmware. Normally this module loads/unloads fine (though I've never actually used the webcam). The breakage is not obvious. There's no kernel oops, and my console is restored, but only Alt-Fx works, no other keys work. I've had this module loaded during suspend/resume since it was introduced into mainline, but I've only had problems with it in 2.6.29 and possibly 2.6.28 (can check for sure if required). At the moment I'm rmmod'ing the module before echo mem >/sys/power/state and then modprobe'ing it after. This fixes the cycle. At a guess this looks like some kind of request_firmware() race (that's the last kernel message I get on resume before the hang). Does isight_firmware actually need to do anything on resume? Is the firmware lost for sure in S3? Anything else I can do to debug this? -- Cheers, Alistair. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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