* [9front] nusb/serial: fix pl2303 usbcmd error checks
@ 2021-02-16 23:51 Michael Forney
0 siblings, 0 replies; only message in thread
From: Michael Forney @ 2021-02-16 23:51 UTC (permalink / raw)
To: 9front
Since 5862:dc783947692e, usbcmd with Rh2d returns the size of the data
stage (excluding the setup packet), so adjust the expected return
values accordingly.
diff 903b37d82b46bee9050d911e81235c4d4d25e4e2 a93cbc303473d336ddd224ac6198bf4499a181b8
--- a/sys/src/cmd/nusb/serial/prolific.c Mon Feb 15 01:42:11 2021
+++ b/sys/src/cmd/nusb/serial/prolific.c Tue Feb 16 15:51:37 2021
@@ -281,7 +281,7 @@
dsprint(2, "serial: vendorwrite val: 0x%x idx:%d\n", val, index);
res = usbcmd(ser->dev, Rh2d | Rvendor | Rdev, VendorWriteReq,
val, index, nil, 0);
- if(res != 8) fprint(2, "serial: vendorwrite failed with res=%d\n", res);
+ if(res != 0) fprint(2, "serial: vendorwrite failed with res=%d\n", res);
return res;
}
@@ -373,7 +373,7 @@
dumpbuf(buf, sizeof buf);
res = usbcmd(ser->dev, Rh2d | Rclass | Riface, SetLineReq,
0, 0, buf, sizeof buf);
- if(res != 8+ParamReqSz){
+ if(res != ParamReqSz){
fprint(2, "serial: plsetparam failed with res=%d\n", res);
if(res >= 0) werrstr("plsetparam failed with res=%d", res);
return -1;
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