Commit b9ec2744 authored Jun 06, 2013 by Guennadi Liakhovetski Committed by Chris Ball Jun 06, 2013

mmc: tmio: reset the controller after power-up



This fixes two reported problems:
1. after a system resume the controller isn't functioning until a command
   runs on a timeout and a controller reset is performed.
2. if a card is ejected during a running write operation, its re-insertion
   isn't detected.

Reported-by: Nguyen Viet Dung <nv-dung@jinso.co.jp>
Reported-by: Nguyen Hong Ky <nh-ky@jinso.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Tested-by: Nguyen Viet Dung <nv-dung@jinso.co.jp>
Tested-by: Nguyen Hong Ky <nh-ky@jinso.co.jp>
Signed-off-by: Chris Ball <cjb@laptop.org>

parent e83b7a8a

drivers/mmc/host/tmio_mmc_pio.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -867,6 +867,8 @@ static void tmio_mmc_set_ios(struct mmc_host mmc, struct mmc_ios ios)
		host->resuming = false;
		}
		}
		if (host->power == TMIO_MMC_OFF_STOP)
		tmio_mmc_reset(host);
		tmio_mmc_set_clock(host, ios->clock);
		if (host->power == TMIO_MMC_OFF_STOP)
		/* power up SD card and the bus */
		@@ -1186,7 +1188,6 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
		struct mmc_host *mmc = dev_get_drvdata(dev);
		struct tmio_mmc_host *host = mmc_priv(mmc);

		tmio_mmc_reset(host);
		tmio_mmc_enable_dma(host, true);

		return 0;

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