my n900 is not detecting any mem card on the slot. i got this log by using dmesg command

[ 6168.557739] cam_shutter (GPIO 110) is now open
[ 6172.768463] cam_focus (GPIO 68) is now active
[ 6173.065277] cam_focus (GPIO 68) is now inactive
[ 6181.924774] cam_shutter (GPIO 110) is now closed
[ 6184.409271] kb_lock (GPIO 113) is now closed
[ 6184.894317] kb_lock (GPIO 113) is now open
[ 6196.776245] slide (GPIO 71) is now open
[ 6332.463928] slide (GPIO 71) is now closed
[ 6338.346557] cam_focus (GPIO 68) is now active
[ 6339.233398] mmc0: cover is open, card is now inaccessible
[ 6339.362213] cam_focus (GPIO 68) is now inactive
[ 6350.266296] mmc0: cover is closed, card is now accessible
[ 6357.377838] slide (GPIO 71) is now open