tree bc34fbb566627834567df4484fc6c8ea71e4b94c
parent d1abaeb3be7b5fa6d7a1fbbd2e14e3310005c4c1
author Dmitry Osipenko <digetx@gmail.com> 1565303070 +0300
committer Ulf Hansson <ulf.hansson@linaro.org> 1566391710 +0200

Revert "mmc: sdhci-tegra: drop ->get_ro() implementation"

The WRITE_PROTECT bit is always in a "protected mode" on Tegra and
WP-GPIO state need to be used instead. In a case of the GPIO absence,
write-enable should be assumed. External SD is writable once again as
a result of this patch because the offending commit changed behaviour for
the case of a missing WP-GPIO to fall back to WRITE_PROTECT bit-checking,
which is incorrect for Tegra.

Cc: stable@vger.kernel.org # v5.1+
Fixes: e8391453e27f ("mmc: sdhci-tegra: drop ->get_ro() implementation")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>