Android6.0 SD卡unmount失败问题

Android6.0 SD卡unmount失败问题

最近在负责SD driver相关的问题。

问题描述：在正常使用SD的后，从setting中选择Ejected ,在卸载SD卡后，重新插入SD卡，

                  显示'SD card is corrupt. Touch to fix'

刚开始怀疑是不是SD卡有问题，换了一张SD卡，还是出现同样的问题。

从串口log中查看：

[  437.756727] mmc_sd_detect(mmc1): Unable to re-detect card (-123)
[  437.955521] type=1400 audit(1483229505.993:201): avc: denied { ioctl } for pid=1969 comm="Binder_8" path="socket:[43706]" dev="sockfs" ino=43706 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
[  437.979787] type=1400 audit(1483229505.993:202): avc: denied { ioctl } for pid=1969 comm="Binder_8" path="socket:[43706]" dev="sockfs" ino=43706 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
[  438.120298] type=1400 audit(1483229506.153:203): avc: denied { ioctl } for pid=2074 comm="Binder_E" path="socket:[32824]" dev="sockfs" ino=32824 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
[  438.142382] type=1400 audit(1483229506.163:204): avc: denied { ioctl } for pid=2074 comm="Binder_E" path="socket:[32824]" dev="sockfs" ino=32824 ioctlcmd=7704 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=unix_stream_socket permissive=0
[  438.470535] mmcblk1: error -123 sending status command, retrying
[  438.475836] mmcblk1: error -123 sending status command, retrying