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From: lost.distance@yahoo.com (Paul Parsons)
To: linux-arm-kernel@lists.infradead.org
Subject: PXA PWM possible regression after 3.5: backlight remains off after resume
Date: Sun, 23 Sep 2012 16:20:24 +0100	[thread overview]
Message-ID: <505F28B8.1030701@yahoo.com> (raw)

There is a possible PXA PWM regression between 3.5 and 3.6-rc6: if I
suspend and then resume an iPAQ hx4700, the backlight remains off.

In 3.5 the backlight would turn on after the resume.

I presumed this is a PWM issue because the PXA PWM driver was reworked
and moved trees between 3.5 and 3.6-rc6. And there was mention of
broken PWM drivers about a month ago, for example:
http://lists.infradead.org/pipermail/linux-arm-kernel/2012-August/115717.html

Does my backlight breakage sound familiar to anybody? Is there
anything obvious I can try before debugging it further?

Regards,
Paul

             reply	other threads:[~2012-09-23 15:20 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-23 15:20 Paul Parsons [this message]
2012-09-23 17:22 ` PXA PWM possible regression after 3.5: backlight remains off after resume Thierry Reding
2012-09-23 18:13   ` Paul Parsons
2012-09-25 19:43     ` Robert Jarzmik
2012-09-26  2:02       ` Paul Parsons

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