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usb: Return early on invalid directions

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This commit is contained in:
Cacodemon345
2023-05-10 17:28:40 +06:00
committed by GitHub
parent 98ebfce460
commit 8893925396
1 changed files with 3 additions and 1 deletions
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4
src/usb.c
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@@ -390,7 +390,7 @@ ohci_service_transfer_desc(usb_t* dev, usb_ed_t* endpoint_desc)
{ {
uint32_t td_addr = endpoint_desc->HeadP & ~(0xf); uint32_t td_addr = endpoint_desc->HeadP & ~(0xf);
usb_td_t td; usb_td_t td;
uint8_t dir, pid_token; uint8_t dir, pid_token = 255;
uint32_t len = 0, pktlen = 0; uint32_t len = 0, pktlen = 0;
uint32_t actual_length = 0; uint32_t actual_length = 0;
uint32_t i = 0; uint32_t i = 0;
@@ -418,6 +418,8 @@ ohci_service_transfer_desc(usb_t* dev, usb_ed_t* endpoint_desc)
case 2: /* IN */ case 2: /* IN */
pid_token = USB_PID_IN; pid_token = USB_PID_IN;
break; break;
default:
return 1;
} }
if (td.CBP && td.BE) { if (td.CBP && td.BE) {