Messages in this thread | | | Date | Sat, 01 Dec 2012 07:04:03 -0500 | From | Richard Yao <> | Subject | My SD Card Reader cannot read SDHC cards |
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I have the following SD Card Reader:
http://support.dell.com/support/edocs/monitors/2405fpw/en/about.htm#Card Reader Specificatoins
It is identified as the following in lsusb:
Bus 002 Device 007: ID 0424:223a Standard Microsystems Corp. 8-in-1 Card Reader
I have a LG microSD Card adapter that came with a LG Optimus V and a 4GB Kingston SDHC microSD card. I also have a 2GB SDSC card that works. When using the microSD card with the adapter, nothing immediate happens. The following messages appear in dmesg when I do `fdisk -lu /dev/sde`:
[ 2075.817148] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2106.777063] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2116.973078] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2133.171089] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2133.369081] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2143.565096] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2143.688984] sd 10:0:0:3: Device offlined - not ready after error recovery [ 2174.889137] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2185.801154] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2196.777168] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2207.785189] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd [ 2238.825093] usb 2-4.2: reset high-speed USB device number 7 using ehci_hcd
Would someone provide me with a brief description of where the code that talks to the SD Card reader lives in Linus' tree and how it works? I am not familiar with this subsystem, so I need some pointers before I can look into whether or not I can make it work.
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