USB: sl811: add Kconfig option for ISOCHRONOUS mode

Some bluetooth dongles want ISO mode, and the limited support that the
sl811 offers today is sufficient.  So add a Kconfig option for people
to optionally get access to the partial functionality.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 11 insertions, 7 deletions

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index e0e0787b724..5f518ded195 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -444,6 +444,16 @@ config USB_SL811_HCD
           To compile this driver as a module, choose M here: the
           module will be called sl811-hcd.
 
+config USB_SL811_HCD_ISO
+        bool "partial ISO support"
+        depends on USB_SL811_HCD
+        help
+          The driver doesn't support iso_frame_desc (yet), but for some simple
+          devices that just queue one ISO frame per URB, then ISO transfers
+          "should" work using the normal urb status fields.
+
+          If unsure, say N.
+
 config USB_SL811_CS
         tristate "CF/PCMCIA support for SL811HS HCD"
         depends on USB_SL811_HCD && PCMCIA
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 18b7099a812..5adcba016fc 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -71,12 +71,6 @@ MODULE_ALIAS("platform:sl811-hcd");
 /* for now, use only one transfer register bank */
 #undef  USE_B
 
-/* this doesn't understand urb->iso_frame_desc[], but if you had a driver
- * that just queued one ISO frame per URB then iso transfers "should" work
- * using the normal urb status fields.
- */
-#define DISABLE_ISO
-
 // #define      QUIRK2
 #define QUIRK3
 
@@ -807,7 +801,7 @@ static int sl811h_urb_enqueue(
         int                     retval;
         struct usb_host_endpoint        *hep = urb->ep;
 
-#ifdef  DISABLE_ISO
+#ifndef CONFIG_USB_SL811_HCD_ISO
         if (type == PIPE_ISOCHRONOUS)
                 return -ENOSPC;
 #endif