Re: [RFT 1/2] cdc-wdm: sanitize error returns

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On 28/04/12 13:14, Bjørn Mork wrote:
Oliver Neukum<oneukum@xxxxxxx>  writes:
Am Freitag, 27. April 2012, 17:22:06 schrieb Bjørn Mork:
But I have no idea which error codes are supposed to be returned and
which should be translated.  I can only assume the change is correct for
wdm_flush, but I wonder why we translate errors there and not anywhere
else? I still get the

My oversight. Please test.


diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 6bf1a40..5ce957e 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -369,6 +369,7 @@ static ssize_t wdm_write
  	r = usb_autopm_get_interface(desc->intf);
  	if (r<  0) {
+		rv = usb_translate_errors(r);
  		goto outnp;

@@ -384,6 +385,7 @@ static ssize_t wdm_write

  	if (r<  0) {
+		rv = r;
  		goto out;

@@ -415,6 +417,7 @@ static ssize_t wdm_write
  		desc->outbuf = NULL;
  		dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv);
+		rv = usb_translate_errors(rv);
  	} else {
  		dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d",
@@ -596,6 +599,7 @@ static int wdm_open(struct inode *inode, struct file *file)
  				"Error submitting int urb - %d\n", rv);
+			rv = usb_translate_errors(rv);
  	} else {
  		rv = 0;

Yes, this removes the "unknown error" problem. I guess Aleksander will
like that.

I do, thanks. EAGAIN is much better than the unknown 512 error. Also tested here.

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