linux-kernel - regression: b43-sdio: probe of mmc0:0001:1 failed with error -16

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Date:	Sun, 31 Oct 2010 18:16:04 +0100
From:	Arnd Hannemann <arnd@...dnet.de>
To:	Ohad Ben-Cohen <ohad@...ery.com>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: regression: b43-sdio: probe of mmc0:0001:1 failed with error -16

Hi,

on todays Linus' git (v2.6.36-9871-g3985c7c) b43 sdio stopped working.
It was working on (v2.6.36-6794-g12ba8d1).

b43-sdio: probe of mmc0:0001:1 failed with error -16

The error seems to originate from the following code in drivers/mmc/core/sdio_bus.c:sdio_bus_probe()

135         ret = pm_runtime_get_sync(dev);
136         if (ret < 0)
137                 goto out;

so I suspect this has something to do with the following commit: 

commit 40bba0c1ca83a370f749c8bc9afda71cf79ebd91
Author: Ohad Ben-Cohen <ohad@...ery.com>
Date:   Sat Oct 2 13:54:11 2010 +0200

    mmc: sdio: enable runtime PM for SDIO functions

However, simply reverting 40bba0c1ca83a370f749c8bc9afda71cf79ebd91 does not work because then
modprobe hangs.

Tested on AP4EVB (arm) with tmio_mmc. Any ideas?

Best regards,
Arnd



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