Hi,
any ideas?
Mar 7 18:51:00 vanamonde kernel: usb-storage: Issuing auto-REQUEST_SENSE
Mar 7 18:51:00 vanamonde kernel: usb-storage: Bulk Command S 0x43425355 T 0xff L 18 F 128 Trg 0 LUN 0 CL 6
Mar 7 18:51:00 vanamonde kernel: usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
Mar 7 18:51:00 vanamonde kernel: mon_text_get_data: num_sgs == 0: src ffff880037c07000
Mar 7 18:51:00 vanamonde kernel: usb-storage: Status code 0; transferred 31/31
Mar 7 18:51:00 vanamonde kernel: usb-storage: -- transfer complete
Mar 7 18:51:00 vanamonde kernel: usb-storage: Bulk command transfer result=0
Mar 7 18:51:00 vanamonde kernel: usb-storage: usb_stor_bulk_transfer_sglist: xfer 18 bytes, 1 entries
Mar 7 18:51:00 vanamonde kernel: mon_text_get_data: num_sgs == 1: src ffff8801351ed440, length 18, scatterlist at ffff880134051dc8, page ffffea000439ebd8
static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
int len, char ev_type, struct mon_bus *mbus)
{
void *src;
if (len <= 0)
return 'L';
if (len >= DATA_MAX)
len = DATA_MAX;
if (ep->is_in) {
if (ev_type != 'C')
return '<';
} else {
if (ev_type != 'S')
return '>';
}
if (urb->num_sgs == 0) {
src = urb->transfer_buffer;
printk(KERN_ERR"%s: num_sgs == 0: src %p\n", __func__, src);
if (src == NULL)
return 'Z'; /* '0' would be not as pretty. */
} else {
struct scatterlist *sg = urb->sg->sg;
/* If IOMMU coalescing occurred, we cannot trust sg_page */
if (urb->sg->nents != urb->num_sgs ||
PageHighMem(sg_page(sg)))
return 'D';
/* For the text interface we copy only the first sg buffer */
len = min_t(int, sg->length, len);
src = sg_virt(sg);
printk(KERN_ERR"%s: num_sgs == %d: src %p, length %d, scatterlist at %p, page %p\n",
__func__, urb->num_sgs, src, len, sg, sg_page(sg));
}
memcpy(ep->data, src, len);
return 0;
}
Regards
Oliver
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