lintao fbfdff1f46
mmc: host: rk_sdmmc: add data-over-int timeout for data_busy ...
If devices fall in bad state make data_busy be hold too long,
dto interrupt will not be present, which leading mmc-core wait for it forever.
[<c06d42e4>] (__schedule+0x48c/0x554) from [<c06d275c>] (schedule_timeout+0x1c/0x260)
[<c06d275c>] (schedule_timeout+0x1c/0x260) from [<c06d3c10>] (wait_for_common+0xd0/0x164)
[<c06d3c10>] (wait_for_common+0xd0/0x164) from [<c044a4bc>] (mmc_wait_for_req_done+0x1c/0xe0)
[<c044a4bc>] (mmc_wait_for_req_done+0x1c/0xe0) from [<c0453730>] (mmc_io_rw_extended+0x218/0x294)
[<c0453730>] (mmc_io_rw_extended+0x218/0x294) from [<c0454590>] (sdio_io_rw_ext_helper+0xc8/0x194)
[<c0454590>] (sdio_io_rw_ext_helper+0xc8/0x194) from [<c04546b0>] (sdio_memcpy_toio+0x1c/0x20)
[<c04546b0>] (sdio_memcpy_toio+0x1c/0x20) from [<c032e96c>] (sdioh_request_packet+0x664/0x7e8)
[<c032e96c>] (sdioh_request_packet+0x664/0x7e8) from [<c032fc78>] (sdioh_request_buffer+0x1a8/0x210)
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