Use correct ioc and chain bits when creating trbs.

2020-02-15 09:55:36 +01:00
parent bd0892e45d
commit 20e5c02391
1 changed files with 5 additions and 1 deletions
@@ -918,6 +918,10 @@ impl Xhci {
            |trb, cycle| {
                let len = cmp::min(bytes_left, max_transfer_size as usize) as u32;

+                // set the interrupt on completion (IOC) flag for the last trb.
+                let ioc = bytes_left <= max_transfer_size as usize;
+                let chain = !ioc;
+
                trb.normal(
                    buffer,
                    len,
@@ -926,7 +930,7 @@ impl Xhci {
                    0,
                    false,
                    true,
-                    false,
+                    chain,
                    true,
                    idt,
                    false,