diff options
Diffstat (limited to 'hw/usb/hcd-ohci.c')
| -rw-r--r-- | hw/usb/hcd-ohci.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index 895b29fb86..9d68036d23 100644 --- a/hw/usb/hcd-ohci.c +++ b/hw/usb/hcd-ohci.c @@ -571,6 +571,11 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed) addr = ed->head & OHCI_DPTR_MASK; + if (addr == 0) { + ohci_die(ohci); + return 1; + } + if (ohci_read_iso_td(ohci, addr, &iso_td)) { trace_usb_ohci_iso_td_read_failed(addr); ohci_die(ohci); @@ -805,13 +810,14 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed) return 1; } +#define HEX_CHAR_PER_LINE 16 + static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len) { bool print16; bool printall; - const int width = 16; int i; - char tmp[3 * width + 1]; + char tmp[3 * HEX_CHAR_PER_LINE + 1]; char *p = tmp; print16 = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_SHORT); @@ -822,7 +828,7 @@ static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len) } for (i = 0; ; i++) { - if (i && (!(i % width) || (i == len))) { + if (i && (!(i % HEX_CHAR_PER_LINE) || (i == len))) { if (!printall) { trace_usb_ohci_td_pkt_short(msg, tmp); break; @@ -858,6 +864,11 @@ static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed) int completion; addr = ed->head & OHCI_DPTR_MASK; + if (addr == 0) { + ohci_die(ohci); + return 1; + } + /* See if this TD has already been submitted to the device. */ completion = (addr == ohci->async_td); if (completion && !ohci->async_complete) { |