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c79f369493
We need to do retune if receiving -EIO, otherwise we could see debug dump like: [ 89.057226] bcmsdh_sdmmc: Failed to Read byte F1:@0x1001f=ff, Err: -5 [ 89.058811] bcmsdh_sdmmc: Failed to Read byte F1:@0x1001f=ff, Err: -5 [ 89.059415] bcmsdh_sdmmc: Failed to Read byte F1:@0x1000e=ff, Err: -84 [ 89.254248] dwmmc_rockchip fe310000.dwmmc: Successfully tuned phase to 199 [ 89.273912] dhd_set_suspend: Remove extra suspend setting [ 89.274478] dhd_enable_packet_filter: enter, value = 0 64 bytes from 112.90.83.112: icmp_seq=24 ttl=53 time=1321 ms 64 bytes from 112.90.83.112: icmp_seq=25 ttl=53 time=319 ms 64 bytes from 112.90.83.112: icmp_seq=26 ttl=53 time=69.8 ms 64 bytes from 112.90.83.112: icmp_seq=27 ttl=53 time=37.5 ms ... In this case we see dw_mmc finally enter retune process, but if this patch is applied, we could save more time to make it work. Also many host drivers will generate -EIO, so this patch can also prevent them from failing to enter retune process. Change-Id: Iba59817fc4677a52bacc857bc99088d1f7790450 Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: xiaoyao <xiaoyao@rock-chips.com>