内核版本：linux2.6.38
系统启动时提示：mmc0: error -110 whilst initialising SD card，
在/proc/devices下能够找到对应的mmc设备为179 mmc，
在/dev目录下未找到mmcblk0设备，
望版主解答下。

换个卡试试

不是卡的问题吧，我在2440上面试试可以读出卡里面的信息的，也能够正常的挂载。

现在卡拔出正常了，提示mmc0: card 5b2a removed

但卡插入的时候提示如下：
mmc0: host does not support reading read-only switch. assuming write-enable.
mmc0: new high speed SDHC card at address 5b2a
mmcblk0: mmc0:5b2a SD04G 3.69 GiB
mmcblk0: retrying using single block read
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 0
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 1
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 2
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 3
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 4
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 5
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 6
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 7
Buffer I/O error on device mmcblk0, logical block 0
mmcblk0: retrying using single block read
mmc0: Got data interrupt 0x02000000 even though no data operation was in progress.
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 0
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 1
mmc0: ADMA error
mmc0: Got data interrupt 0x00400000 even though no data operation was in progress.
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
mmcblk0: error -5 transferring data, sector 2, nr 6, card status 0x0
end_request: I/O error, dev mmcblk0, sector 2
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 3
mmc0: ADMA error
mmc0: Got data interrupt 0x00400000 even though no data operation was in progress.
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
mmcblk0: error -5 transferring data, sector 4, nr 4, card status 0x0
end_request: I/O error, dev mmcblk0, sector 4
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 5
mmc0: ADMA error
mmc0: Got data interrupt 0x00400000 even though no data operation was in progress.
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
mmcblk0: error -5 transferring data, sector 6, nr 2, card status 0x0
end_request: I/O error, dev mmcblk0, sector 6
mmcblk0: error -110 sending status command
mmcblk0: error -110 sending read/write command, response 0x0, card status 0x0
end_request: I/O error, dev mmcblk0, sector 7
Buffer I/O error on device mmcblk0, logical block 0
mmcblk0: unable to read partition table
是什么原因造成的？

现在能够找到设备，并能够正确读取出卡里面的内容，但在卡里面新建文件夹和文件的时候出现以下错误，是什么原因导致的？希望版主给个解答，急急急、、、
mmcblk0: error -84 transferring data, sector 3125, nr 1, card status 0xe00
end_request: I/O error, dev mmcblk0, sector 3125
Buffer I/O error on device mmcblk0p1, logical block 2997
lost page write due to I/O error on mmcblk0p1
FAT: Filesystem error (dev mmcblk0p1)
    fat_free_clusters: deleting FAT entry beyond EOF
FAT: Filesystem has been set read-only
mkdir: can't create directory 'test2': Input/output error