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From: Michael Forney <mforney@mforney.org>
To: 9front@9front.org
Subject: [9front] nusb/serial: fix pl2303 usbcmd error checks
Date: Tue, 16 Feb 2021 23:51:37 +0000
Message-ID: <2C3ED12F4D58C29EA86D2DE288EBDDFC@arrow.hsd1.ca.comcast.net> (raw)

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;

                 reply	other threads:[~2021-02-17  0:04 UTC|newest]

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