Hi All, I uses potevio MicroSD 512M to test the SD/MMC driver in current master kernel. I found some issue: 1. The issue (1) After I insert the microSD,Why The SD card probe finish(The parrition and device has already register). But The more and more data transport between card and host? Who can told me the function of this data.(The log information as following). (2) The MicroSD can be probe successful. But The error information display on the processor of multi-block data transfer. Any advices are welcome! 2. Kernel configure: CONFIG_MMC = y CONFIG_MMC_DEBUG = y CONFIG_MMC_BLOCK = y CONFIG_MMC_SDHCI = y CONFIG_MMC_SDHCI_PCI = y 3. Debug information: mmc0: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20 width 0 timing 0 mmc0: req failed (CMD5): -110, retrying... mmc0: req failed (CMD5): -110, retrying... mmc0: req failed (CMD5): -110, retrying... mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 20 width 0 timing 0 mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 20 width 0 timing 2 mmc0: clock 50000000Hz busmode 2 powermode 2 cs 0 Vdd 20 width 0 timing 2 mmc0: clock 50000000Hz busmode 2 powermode 2 cs 0 Vdd 20 width 2 timing 2 mmc0: new high speed SD card at address 0002 mmcblk0: mmc0:0002 N/A 484 MiB mmcblk0: p1 mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 57, nr 71, card status 0x900 end_request: I/O error, dev mmcblk0, sector 57 mmcblk0: error -84 transferring data, sector 61, nr 67, card status 0x900 end_request: I/O error, dev mmcblk0, sector 61 quiet_error: 15 callbacks suppressed Buffer I/O error on device mmcblk0, logical block 7 mmcblk0: error -84 transferring data, sector 65, nr 63, card status 0x900 end_request: I/O error, dev mmcblk0, sector 65 mmcblk0: error -84 transferring data, sector 69, nr 59, card status 0x900 end_request: I/O error, dev mmcblk0, sector 69 mmcblk0: error -84 transferring data, sector 71, nr 57, card status 0x900 end_request: I/O error, dev mmcblk0, sector 71 Buffer I/O error on device mmcblk0, logical block 8 mmcblk0: error -84 transferring data, sector 73, nr 55, card status 0x900 end_request: I/O error, dev mmcblk0, sector 73 mmcblk0: error -84 transferring data, sector 77, nr 51, card status 0x900 end_request: I/O error, dev mmcblk0, sector 77 Buffer I/O error on device mmcblk0, logical block 9 mmcblk0: error -84 transferring data, sector 87, nr 41, card status 0x900 end_request: I/O error, dev mmcblk0, sector 87 Buffer I/O error on device mmcblk0, logical block 10 mmcblk0: error -84 transferring data, sector 127, nr 1, card status 0x900 end_request: I/O error, dev mmcblk0, sector 127 Buffer I/O error on device mmcblk0, logical block 15 mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 143, nr 113, card status 0x900 end_request: I/O error, dev mmcblk0, sector 143 Buffer I/O error on device mmcblk0, logical block 17 mmcblk0: error -84 transferring data, sector 151, nr 105, card status 0x900 end_request: I/O error, dev mmcblk0, sector 151 Buffer I/O error on device mmcblk0, logical block 18 mmcblk0: error -84 transferring data, sector 161, nr 95, card status 0x900 end_request: I/O error, dev mmcblk0, sector 161 mmcblk0: error -84 transferring data, sector 215, nr 41, card status 0x900 end_request: I/O error, dev mmcblk0, sector 215 Buffer I/O error on device mmcblk0, logical block 26 mmcblk0: error -84 transferring data, sector 217, nr 39, card status 0x900 end_request: I/O error, dev mmcblk0, sector 217 mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 57, nr 7, card status 0x900 end_request: I/O error, dev mmcblk0, sector 57 mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 535, nr 9, card status 0x900 end_request: I/O error, dev mmcblk0, sector 535 mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 535, nr 1, card status 0x900 end_request: I/O error, dev mmcblk0, sector 535 mmcblk0: retrying using single block read mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 193, nr 116, card status 0x900 end_request: I/O error, dev mmcblk0, sector 193 mmcblk0: error -84 transferring data, sector 215, nr 94, card status 0x900 end_request: I/O error, dev mmcblk0, sector 215 mmcblk0: error -84 transferring data, sector 217, nr 92, card status 0x900 end_request: I/O error, dev mmcblk0, sector 217 mmcblk0: error -84 transferring data, sector 279, nr 30, card status 0x900 end_request: I/O error, dev mmcblk0, sector 279 mmcblk0: error -84 transferring data, sector 289, nr 20, card status 0x900 end_request: I/O error, dev mmcblk0, sector 289 mmcblk0: retrying using single block read mmcblk0: error -84 transferring data, sector 57, nr 124, card status 0x900 end_request: I/O error, dev mmcblk0, sector 57 mmcblk0: error -84 transferring data, sector 61, nr 120, card status 0x900 end_request: I/O error, dev mmcblk0, sector 61 mmcblk0: error -84 transferring data, sector 65, nr 116, card status 0x900 end_request: I/O error, dev mmcblk0, sector 65 mmcblk0: error -84 transferring data, sector 71, nr 110, card status 0x900 end_request: I/O error, dev mmcblk0, sector 71 mmcblk0: error -84 transferring data, sector 75, nr 106, card status 0x900 end_request: I/O error, dev mmcblk0, sector 75 mmcblk0: error -84 transferring data, sector 77, nr 104, card status 0x900 end_request: I/O error, dev mmcblk0, sector 77 mmcblk0: error -84 transferring data, sector 79, nr 102, card status 0x900 end_request: I/O error, dev mmcblk0, sector 79 mmcblk0: error -84 transferring data, sector 81, nr 100, card status 0x900 end_request: I/O error, dev mmcblk0, sector 81 mmcblk0: error -84 transferring data, sector 85, nr 96, card status 0x900 end_request: I/O error, dev mmcblk0, sector 85 mmcblk0: error -84 transferring data, sector 87, nr 94, card status 0x900 end_request: I/O error, dev mmcblk0, sector 87 mmcblk0: error -84 transferring data, sector 103, nr 78, card status 0x900 end_request: I/O error, dev mmcblk0, sector 103 mmcblk0: error -84 transferring data, sector 127, nr 54, card status 0x900 end_request: I/O error, dev mmcblk0, sector 127 mmcblk0: error -84 transferring data, sector 143, nr 38, card status 0x900 end_request: I/O error, dev mmcblk0, sector 143 mmcblk0: error -84 transferring data, sector 151, nr 30, card status 0x900 end_request: I/O error, dev mmcblk0, sector 151 mmcblk0: error -84 transferring data, sector 161, nr 20, card status 0x900 end_request: I/O error, dev mmcblk0, sector 161 mmcblk0: error -84 transferring data, sector 177, nr 4, card status 0x900 end_request: I/O error, dev mmcblk0, sector 177 mmcblk0: error -84 transferring data, sector 57, nr 1, card status 0x900 end_request: I/O error, dev mmcblk0, sector 57 Thanks hongbo -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html