Laurent Pinchart 6de707f200 mmc: tmio: Don't access hardware registers after stopping clocks ... The tmio_mmc_set_ios() function configures the MMC power, clock and bus width. When the mmc core requests the driver to power off the card, we inform runtime PM, that the controller can be suspended. This can lead to the MSTP clock being turned off. Writing to any 16-bit hardware registers with the MSTP clock off leads to timeouts and errors being printed to the kernel log. This can occur both when stopping the MMC clock and when configuring the bus width. To fix this, stop the MMC clock before calling put_runtime_pm(), and skip bus width configuration when power is off. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Simon Horman <horms@verge.net.au> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>		2012-07-21 00:02:07 -04:00
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card	mmc: block: replace __blk_end_request() with blk_end_request()	2012-07-10 23:04:05 -04:00
core	mmc: core: Export regulator_* functions as GPL	2012-07-10 23:04:06 -04:00
host	mmc: tmio: Don't access hardware registers after stopping clocks	2012-07-21 00:02:07 -04:00
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