usb: gadget: f_mass_storage: convert to new function interface with backward compatib...

[firefly-linux-kernel-4.4.55.git] / drivers / usb / gadget / acm_ms.c

diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c
index 4b947bb50f62acdd17bebee987b5b14faa26e253..31aae8fce426fb24bd850a6cd35cba9af9e3c250 100644 (file)
--- a/drivers/usb/gadget/acm_ms.c
+++ b/drivers/usb/gadget/acm_ms.c
@@ -40,6 +40,7 @@
  * the runtime footprint, and giving us at least some parts of what
  * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
  */
+#define USB_FMS_INCLUDED
 #include "f_mass_storage.c"
 
 /*-------------------------------------------------------------------------*/
@@ -104,6 +105,20 @@ static struct usb_gadget_strings *dev_strings[] = {
 /****************************** Configurations ******************************/
 
 static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers        CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
+
+#endif /* CONFIG_USB_DEBUG */
+
 FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
 
 static struct fsg_common fsg_common;
@@ -167,7 +182,8 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev)
        void                    *retp;
 
        /* set up mass storage function */
-       retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
+       retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data,
+                                     fsg_num_buffers);
        if (IS_ERR(retp)) {
                status = PTR_ERR(retp);
                return PTR_ERR(retp);