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Revert "mmc: tmio: remove workaround for NON_REMOVABLE"

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This reverts commit 7a7dab2370. We found
out that there is still a race with RuntimePM. This can lead to a hang
when accessing the eMMC in some situations. Revert this change until the
RPM issue is fixed.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2019-11-21 12:17:33 +01:00 committed by Ulf Hansson
parent 1696d96890
commit 478c60cea1
1 changed files with 9 additions and 0 deletions
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9
drivers/mmc/host/tmio_mmc_core.c
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@ -1208,6 +1208,15 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
if (!_host->reset)
_host->reset = tmio_mmc_reset;
/*
* On Gen2+, eMMC with NONREMOVABLE currently fails because native
* hotplug gets disabled. It seems RuntimePM related yet we need further
* research. Since we are planning a PM overhaul anyway, let's enforce
* for now the device being active by enabling native hotplug always.
*/
if (pdata->flags & TMIO_MMC_MIN_RCAR2)
_host->native_hotplug = true;
/*
* While using internal tmio hardware logic for card detection, we need
* to ensure it stays powered for it to work.