diff options
| author | DooHyun Hwang <dh0421.hwang@samsung.com> | 2021-02-10 13:59:36 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 10:38:17 +0200 |
| commit | f9c694ebe3afd9a754b8c9a6592329cd89d0c174 (patch) | |
| tree | 9f8c9ba96a7b30a314783fb04fb169ed61d05858 /tools/perf/scripts/python/netdev-times.py | |
| parent | 038c6001dba71baaf5009861cfb044d5aef0ee71 (diff) | |
mmc: core: Do a power cycle when the CMD11 fails
commit 147186f531ae49c18b7a9091a2c40e83b3d95649 upstream.
A CMD11 is sent to the SD/SDIO card to start the voltage switch procedure
into 1.8V I/O. According to the SD spec a power cycle is needed of the
card, if it turns out that the CMD11 fails. Let's fix this, to allow a
retry of the initialization without the voltage switch, to succeed.
Note that, whether it makes sense to also retry with the voltage switch
after the power cycle is a bit more difficult to know. At this point, we
treat it like the CMD11 isn't supported and therefore we skip it when
retrying.
Signed-off-by: DooHyun Hwang <dh0421.hwang@samsung.com>
Link: https://lore.kernel.org/r/20210210045936.7809-1-dh0421.hwang@samsung.com
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions