Linux USB mass storage porting guide
今天接收到一個任務，是在ARM的版子上加入USB SD讀卡機的功能， 本想說是個簡單任務，只要把以下幾項加入就OKAY了 #USB support CONFIG_USB=y #platform specific CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB_ARCH_HAS_OHCI=y #IXP host driver CONFIG_USB_EHCI_HCD=y CONFIG_IXP4XX_USB_EHCI_HCD=y #USB storage CONFIG_USB_STORAGE=y #SCSI support CONFIG_SCSI=y #SCSI storage device CONFIG_BLK_DEV_SD=y CONFIG_FAT_FS=y CONFIG_MSDOS_FS=y CONFIG_VFAT_FS=y 可是卻得到以下的錯誤： usb 2-1: USB disconnect, address 2 usb 1-1: new high speed USB device using ixp4xx-ehci and address 2 usb 1-1: configuration #1 chosen from 1 choice scsi1 : SCSI emulation for USB Mass Storage devices Vendor: Generic Model: USB SD Reader Rev: 1.00 Type: Direct-Access ANSI SCSI revision: 00 SCSI device sda: 497664 512-byte hdwr sectors (255 MB) sda: Write Protect is off sda: assuming drive cache: write through SCSI device sda: 497664 512-byte hdwr sectors (255 MB) sda: Write Protect is off sda: assuming drive cache: write through sda: unknown partition table 找了一下，在Par