SDCard detection using the card reader via USB Host fails using some card reader

[Harikrishna]

SDCard connectd using card reader via USB Host port fails with some Card Reader. But the same card reader is working fine with the host.
Using Trancend TS-RDP8k card is detected only oon host
Using Transcend RDP8 card is detected with both target and Host

[Angus Ainslie (angus-akkea)]

Do you have a dmesg log of the failures ?

[Harikrishna (s-hari)]

Hi,
Below is the dmesg log :

Using Trancend TS-RDP8k card reader(SD not getting detected)
===================================================
root@linaro:~/SDMMC# dmesg
usb 1-1: new full speed USB device number 3 using s5p-ohci
usb 1-1: New USB device found, idVendor=058f, idProduct=6361
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Mass Storage Device
usb 1-1: Manufacturer: Generic
usb 1-1: SerialNumber: 058F63616476
usbcore: registered new interface driver uas
Initializing USB Mass Storage driver...
scsi0 : usb-storage 1-1:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 0:0:0:0: Direct-Access Generic- Compact Flash 1.01 PQ: 0 ANSI: 0
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] Attached SCSI removable disk
root@linaro:~/SDMMC# dmesg -c
usb 1-1: new full speed USB device number 3 using s5p-ohci
usb 1-1: New USB device found, idVendor=058f, idProduct=6361
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Mass Storage Device
usb 1-1: Manufacturer: Generic
usb 1-1: SerialNumber: 058F63616476
usbcore: registered new interface driver uas
Initializing USB Mass Storage driver...
scsi0 : usb-storage 1-1:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 0:0:0:0: Direct-Access Generic- Compact Flash 1.01 PQ: 0 ANSI: 0
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] Attached SCSI removable disk
root@linaro:~/SDMMC#
root@linaro:~/SDMMC#
root@linaro:~/SDMMC#
root@linaro:~/SDMMC# dmesg -c
root@linaro:~/SDMMC# dmesg -c
root@linaro:~/SDMMC#

**************card is inserted but not detected using the above card reader ****************************

Using Transcend RDP8 Card reader
=================================

root@linaro:~/SDMMC# dmesg -c
usb 1-1: USB disconnect, device number 3
usb 1-1: new full speed USB device number 4 using s5p-ohci
usb 1-1: New USB device found, idVendor=5453, idProduct=5038
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: TS-RDP8
usb 1-1: Manufacturer: Transcend
usb 1-1: SerialNumber: RDP800000000
scsi1 : usb-storage 1-1:1.0
scsi 1:0:0:0: Direct-Access RDP8 SD/microSD 1.00 PQ: 0 ANSI: 0
sd 1:0:0:0: Attached scsi generic sg0 type 0
sd 1:0:0:0: [sda] Attached SCSI removable disk
root@linaro:~/SDMMC# sd 1:0:0:0: [sda] No Caching mode page present
sd 1:0:0:0: [sda] Assuming drive cache: write through
sd 1:0:0:0: [sda] No Caching mode page present
sd 1:0:0:0: [sda] Assuming drive cache: write through

root@linaro:~/SDMMC# dmesg -c
sd 1:0:0:0: [sda] 7744512 512-byte logical blocks: (3.96 GB/3.69 GiB)
sd 1:0:0:0: [sda] No Caching mode page present
sd 1:0:0:0: [sda] Assuming drive cache: write through
sd 1:0:0:0: [sda] No Caching mode page present
sd 1:0:0:0: [sda] Assuming drive cache: write through
 sda: sda1 sda2 sda3
EXT3-fs: barriers not enabled
EXT3-fs (sda3): warning: maximal mount count reached, running e2fsck is recommended
kjournald starting. Commit interval 5 seconds
EXT3-fs (sda3): using internal journal
EXT3-fs (sda3): mounted filesystem with order...