Am Sonntag, 7. März 2010 21:45:50 schrieb Alan Stern: > len and sg_page(sg) aren't particularly useful, as far as I can see. > > sg and src need to be compared with the original values when the > scatterlist was created. In invoke_transport() print out the values of > scsi_sglist(srb), srb->sense_buffer, &ses->sense_sgl, and > sg_virt(&ses->sense_sgl). Do this after the call to > scsi_eh_prep_cmnd(). Mar 8 19:06:10 vanamonde kernel: usb-storage: Issuing auto-REQUEST_SENSE Mar 8 19:06:10 vanamonde kernel: usb_stor_invoke_transport - sglist ffff880135b37dc8 sense buffer ffff8801363db940 sense sgl ffff8801363db940 sg_virt ffffea00043dd7ea page link 0000000087654321 dmaaddr ffffea0 0043dd7ea Mar 8 19:06:10 vanamonde kernel: usb-storage: Bulk Command S 0x43425355 T 0x118 L 18 F 128 Trg 0 LUN 0 CL 6 Mar 8 19:06:10 vanamonde kernel: usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes Mar 8 19:06:10 vanamonde kernel: mon_text_get_data: num_sgs == 0: src ffff880037807000 Mar 8 19:06:10 vanamonde kernel: usb-storage: Status code 0; transferred 31/31 Mar 8 19:06:10 vanamonde kernel: usb-storage: -- transfer complete Mar 8 19:06:10 vanamonde kernel: usb-storage: Bulk command transfer result=0 Mar 8 19:06:10 vanamonde kernel: usb-storage: usb_stor_bulk_transfer_sglist: xfer 18 bytes, 1 entries Mar 8 19:06:10 vanamonde kernel: mon_text_get_data: num_sgs == 1: src ffff8801363db940, length 18, scatterlist at ffff880135b37dc8, page ffffea00043dd7e8 Mar 8 19:06:10 vanamonde kernel: usb-storage: Status code 0; transferred 18/18 Mar 8 19:06:10 vanamonde kernel: usb-storage: -- transfer complete Here you are. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
