USB: cdc-wdm: sanitize error returns

Oliver Neukum · gregkh · commit 24a85bae5da2 · 2012-04-29T21:53:41.000-04:00
wdm_flush() returns unsanitized USB error codes.
They must be cleaned up to before being anded to user space

Signed-off-by: Oliver Neukum &lt;oneukum@suse.de&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
@@ -531,7 +531,7 @@ static int wdm_flush(struct file *file, fl_owner_t id)
 		dev_err(&desc->intf->dev, "Error in flush path: %d\n",
 			desc->werr);
 
-	return desc->werr;
+	return usb_translate_errors(desc->werr);
 }
 
 static unsigned int wdm_poll(struct file *file, struct poll_table_struct *wait)

Original file line number	Diff line number	Diff line change
`@@ -531,7 +531,7 @@ static int wdm_flush(struct file *file, fl_owner_t id)`
`531`	`531`	`dev_err(&desc->intf->dev, "Error in flush path: %d\n",`
`532`	`532`	`desc->werr);`
`533`	`533`
`534`		`- return desc->werr;`
	`534`	`+ return usb_translate_errors(desc->werr);`
`535`	`535`	`}`
`536`	`536`
`537`	`537`	`static unsigned int wdm_poll(struct file file, struct poll_table_struct wait)`