• Yoshihiro Shimoda's avatar
    USB: fix cannot work usb storage when using ohci-sm501 · e2722528
    Yoshihiro Shimoda authored
    When I used ohci-sm501, hcd_alloc_coherent() in map_urb_for_dma() is not
    called, because usb_sg_init() always sets URB_NO_TRANSFER_DMA_MAP.
    
    dmesg (CONFIG_USB_STORAGE_DEBUG enabled):
    
    usb-storage: Bulk Command S 0x43425355 T 0x1 L 36 F 128 Trg 0 LUN 0 CL 6
    usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
    usb-storage: Status code 0; transferred 31/31
    usb-storage: -- transfer complete
    usb-storage: Bulk command transfer result=0
    usb-storage: usb_stor_bulk_transfer_sglist: xfer 36 bytes, 1 entries
    usb-storage: Status code -75; transferred 0/36
    usb-storage: -- babble
    usb-storage: Bulk data transfer result 0x3
    usb-storage: Attempting to get CSW...
    usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes
    usb-storage: Status code 0; transferred 13/13
    usb-storage: -- transfer complete
    usb-storage: Bulk status result = 0
    usb-storage: Bulk Status S 0x53425355 T 0x1 R 0 Stat 0x0
    usb-storage: scsi cmd done, result=0x2
    Signed-off-by: default avatarYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    e2722528
message.c 51.9 KB