[PATCH] USBATM: add flags field

Have minidrivers and the core signal special requirements
using a flags field in struct usbatm_data.  For the moment
this is only used to replace the need_heavy_init bind
parameter, but there'll be new flags in later patches.

Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/atm/cxacru.c

@@ -666,8 +666,7 @@ static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
 }
 
 static int cxacru_bind(struct usbatm_data *usbatm_instance,
-		       struct usb_interface *intf, const struct usb_device_id *id,
+		       struct usb_interface *intf, const struct usb_device_id *id)
-		       int *need_heavy_init)
 {
 	struct cxacru_data *instance;
 	struct usb_device *usb_dev = interface_to_usbdev(intf);
@@ -726,7 +725,7 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
 
 	usbatm_instance->driver_data = instance;
 
-	*need_heavy_init = cxacru_card_status(instance);
+	usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
 
 	return 0;
 

drivers/usb/atm/speedtch.c

@@ -681,8 +681,7 @@ static void speedtch_release_interfaces(struct usb_device *usb_dev, int num_inte
 
 static int speedtch_bind(struct usbatm_data *usbatm,
 			 struct usb_interface *intf,
-			 const struct usb_device_id *id,
+			 const struct usb_device_id *id)
-			 int *need_heavy_init)
 {
 	struct usb_device *usb_dev = interface_to_usbdev(intf);
 	struct usb_interface *cur_intf;
@@ -754,11 +753,11 @@ static int speedtch_bind(struct usbatm_data *usbatm,
 			      0x12, 0xc0, 0x07, 0x00,
 			      instance->scratch_buffer + OFFSET_7, SIZE_7, 500);
 
-	*need_heavy_init = (ret != SIZE_7);
+	usbatm->flags = (ret == SIZE_7 ? UDSL_SKIP_HEAVY_INIT : 0);
 
-	usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, need_heavy_init ? "not" : "already");
+	usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, usbatm->flags & UDSL_SKIP_HEAVY_INIT ? "already" : "not");
 
-	if (*need_heavy_init)
+	if (!(usbatm->flags & UDSL_SKIP_HEAVY_INIT))
 		if ((ret = usb_reset_device(usb_dev)) < 0) {
 			usb_err(usbatm, "%s: device reset failed (%d)!\n", __func__, ret);
 			goto fail_free;

drivers/usb/atm/ueagle-atm.c

@@ -1617,7 +1617,7 @@ static void create_fs_entries(struct uea_softc *sc, struct usb_interface *intf)
 }
 
 static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf,
-		   const struct usb_device_id *id, int *heavy)
+		   const struct usb_device_id *id)
 {
 	struct usb_device *usb = interface_to_usbdev(intf);
 	struct uea_softc *sc;
@@ -1629,7 +1629,7 @@ static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf,
 	if (ifnum != UEA_INTR_IFACE_NO)
 		return -ENODEV;
 
-	*heavy = sync_wait[modem_index];
+	usbatm_instance->flags = (sync_wait[modem_index] ? 0 : UDSL_SKIP_HEAVY_INIT);
 
 	/* interface 1 is for outbound traffic */
 	ret = claim_interface(usb, usbatm, UEA_US_IFACE_NO);

drivers/usb/atm/usbatm.c

@@ -969,7 +969,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 	char *buf;
 	int error = -ENOMEM;
 	int i, length;
-	int need_heavy;
 
 	dev_dbg(dev, "%s: trying driver %s with vendor=%04x, product=%04x, ifnum %2d\n",
 			__func__, driver->driver_name,
@@ -1014,8 +1013,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 	snprintf(buf, length, ")");
 
  bind:
-	need_heavy = 1;
+	if (driver->bind && (error = driver->bind(instance, intf, id)) < 0) {
-	if (driver->bind && (error = driver->bind(instance, intf, id, &need_heavy)) < 0) {
 			dev_err(dev, "%s: bind failed: %d!\n", __func__, error);
 			goto fail_free;
 	}
@@ -1098,7 +1096,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 		     __func__, urb->transfer_buffer, urb->transfer_buffer_length, urb);
 	}
 
-	if (need_heavy && driver->heavy_init) {
+	if (!(instance->flags & UDSL_SKIP_HEAVY_INIT) && driver->heavy_init) {
 		error = usbatm_heavy_init(instance);
 	} else {
 		complete(&instance->thread_exited);	/* pretend that heavy_init was run */

drivers/usb/atm/usbatm.h

@@ -84,6 +84,11 @@
 #endif
 
 
+/* flags, set by mini-driver in bind() */
+
+#define UDSL_SKIP_HEAVY_INIT	(1<<0)
+
+
 /* mini driver */
 
 struct usbatm_data;
@@ -99,12 +104,9 @@ struct usbatm_driver {
 
 	const char *driver_name;
 
-	/*
+	/* init device ... can sleep, or cause probe() failure */
-	*  init device ... can sleep, or cause probe() failure.  Drivers with a heavy_init
-	*  method can avoid having it called by setting need_heavy_init to zero.
-	*/
         int (*bind) (struct usbatm_data *, struct usb_interface *,
-		     const struct usb_device_id *id, int *need_heavy_init);
+		     const struct usb_device_id *id);
 
 	/* additional device initialization that is too slow to be done in probe() */
         int (*heavy_init) (struct usbatm_data *, struct usb_interface *);
@@ -152,6 +154,7 @@ struct usbatm_data {
 	struct usbatm_driver *driver;
 	void *driver_data;
 	char driver_name[16];
+	unsigned int flags; /* set by mini-driver in bind() */
 
 	/* USB device */
 	struct usb_device *usb_dev;

drivers/usb/atm/xusbatm.c

@@ -62,8 +62,7 @@ static int usb_intf_has_ep(const struct usb_interface *intf, u8 ep)
 }
 
 static int xusbatm_bind(struct usbatm_data *usbatm,
-			struct usb_interface *intf, const struct usb_device_id *id,
+			struct usb_interface *intf, const struct usb_device_id *id)
-			int *need_heavy_init)
 {
 	struct usb_device *usb_dev = interface_to_usbdev(intf);
 	int drv_ix = id - xusbatm_usb_ids;