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-rw-r--r--sys/src/9/pc/usbxhci.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/9/pc/usbxhci.c b/sys/src/9/pc/usbxhci.c
index 8925df257..489de15a3 100644
--- a/sys/src/9/pc/usbxhci.c
+++ b/sys/src/9/pc/usbxhci.c
@@ -800,7 +800,7 @@ completering(Ring *r, u32int *er)
pa = (*(u64int*)er) & ~15ULL;
ilock(r);
- for(x = r->rp; (int)(r->wp - x) > 0; x++){
+ for(x = r->rp; (int)(r->wp - x) > 0;){
td = &r->base[4*(x++ & r->mask)];
if((u64int)PADDR(td) == pa){
r->rp = x;