问一个sdmmc驱动的问题

要有上进心

开发板是SMDK6410的。 最近移植SDMMC驱动的时候出现了点问题。不知道怎么解决，出错信息如下：
[   11.250000] mmcblk0: error -110 transferring data, sector 1, nr 7, card status 0x900
[   11.250000] end_request: I/O error, dev mmcblk0, sector 1
[   11.250000] mmcblk0: error -110 transferring data, sector 2, nr 6, card status 0x900
[   11.260000] end_request: I/O error, dev mmcblk0, sector 2
[   11.290000] mmcblk0: error -110 transferring data, sector 3, nr 5, card status 0x900
[   11.290000] end_request: I/O error, dev mmcblk0, sector 3
[   11.310000] usb 1-1: device descriptor read/64, error -62
[   11.310000] mmcblk0: error -110 transferring data, sector 4, nr 4, card status 0x900
[   11.310000] end_request: I/O error, dev mmcblk0, sector 4
[   11.320000] mmcblk0: error -110 transferring data, sector 5, nr 3, card status 0xb00
[   11.330000] end_request: I/O error, dev mmcblk0, sector 5
[   11.340000] mmcblk0: error -110 transferring data, sector 6, nr 2, card status 0x900
[   11.340000] end_request: I/O error, dev mmcblk0, sector 6
[   11.350000] mmcblk0: error -110 transferring data, sector 7, nr 1, card status 0x900
[   11.350000] end_request: I/O error, dev mmcblk0, sector 7
[   11.350000] Buffer I/O error on device mmcblk0, logical block 0
[   11.370000] mmcblk0: retrying using single block read
[   11.370000] mmcblk0: error -110 transferring data, sector 0, nr 8, card status 0xb00
[   11.370000] end_request: I/O error, dev mmcblk0, sector 0
[   11.380000] mmcblk0: error -110 transferring data, sector 1, nr 7, card status 0x900
[   11.390000] end_request: I/O error, dev mmcblk0, sector 1
[   11.400000] mmcblk0: error -110 transferring data, sector 2, nr 6, card status 0x900
[   11.400000] end_request: I/O error, dev mmcblk0, sector 2
[   11.410000] mmcblk0: error -110 transferring data, sector 3, nr 5, card status 0x900
[   11.420000] end_request: I/O error, dev mmcblk0, sector 3
[   11.430000] mmcblk0: error -110 transferring data, sector 4, nr 4, card status 0x900
[   11.430000] end_request: I/O error, dev mmcblk0, sector 4
[   11.430000] mmcblk0: error -110 transferring data, sector 5, nr 3, card status 0xb00
[   11.440000] end_request: I/O error, dev mmcblk0, sector 5
[   11.450000] mmcblk0: error -110 transferring data, sector 6, nr 2, card status 0x900
[   11.460000] end_request: I/O error, dev mmcblk0, sector 6
[   11.470000] mmcblk0: error -110 transferring data, sector 7, nr 1, card status 0x900
[   11.470000] end_request: I/O error, dev mmcblk0, sector 7
[   11.470000] Buffer I/O error on device mmcblk0, logical block 0
[   11.480000]  unable to read partition table


[   10.050000] sdhci: Secure Digital Host Controller Interface driver
[   10.060000] sdhci: Copyright(c) Pierre Ossman
[   10.060000] s3c-sdhci s3c-sdhci.0: clock source 0: hsmmc (133000000 Hz)
[   10.070000] s3c-sdhci s3c-sdhci.0: clock source 1: hsmmc (133000000 Hz)
[   10.080000] s3c-sdhci s3c-sdhci.0: clock source 2: mmc_bus (96000000 Hz)
[   10.080000] caps=99090560
[   10.080000] max_clk = 133000000,timeout_clk = 133000
[   10.090000] Registered led device: mmc0::
[   10.090000] mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.0] using DMA

我插入的是一张 8G 金士顿 SD卡。 请问这个怎么解决啊。