ALSA: sound/usb: use USB API functions rather than constants

This set of patches introduces calls to the following set of functions:

usb_endpoint_dir_in(epd)
usb_endpoint_dir_out(epd)
usb_endpoint_is_bulk_in(epd)
usb_endpoint_is_bulk_out(epd)
usb_endpoint_is_int_in(epd)
usb_endpoint_is_int_out(epd)
usb_endpoint_num(epd)
usb_endpoint_type(epd)
usb_endpoint_xfer_bulk(epd)
usb_endpoint_xfer_control(epd)
usb_endpoint_xfer_int(epd)
usb_endpoint_xfer_isoc(epd)

In some cases, introducing one of these functions is not possible, and it
just replaces an explicit integer value by one of the following constants:

USB_ENDPOINT_XFER_BULK
USB_ENDPOINT_XFER_CONTROL
USB_ENDPOINT_XFER_INT
USB_ENDPOINT_XFER_ISOC

An extract of the semantic patch that makes these changes is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r1@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\)) ==
- \(USB_ENDPOINT_XFER_CONTROL\|0\))
+ usb_endpoint_xfer_control(epd)

@r5@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) ==
-  \(USB_DIR_IN\|0x80\))
+ usb_endpoint_dir_in(epd)

@inc@
@@

#include <linux/usb.h>

@depends on !inc && (r1||r5)@
@@

+ #include <linux/usb.h>
  #include <linux/usb/...>
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 6d9f9b1..3a9a9fe 100644 (file)
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -1392,8 +1392,8 @@ static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
        for (i = 0; i < intfd->bNumEndpoints; ++i) {
                hostep = &hostif->endpoint[i];
                ep = get_ep_desc(hostep);
-               if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
-                   (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
+               if (usb_endpoint_type(ep) != USB_ENDPOINT_XFER_BULK &&
+                   usb_endpoint_type(ep) != USB_ENDPOINT_XFER_INT)
                        continue;
                ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
                if (hostep->extralen < 4 ||
@@ -1401,15 +1401,15 @@ static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
                    ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
                    ms_ep->bDescriptorSubtype != MS_GENERAL)
                        continue;
-               if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
+               if (usb_endpoint_dir_out(ep)) {
                        if (endpoints[epidx].out_ep) {
                                if (++epidx >= MIDI_MAX_ENDPOINTS) {
                                        snd_printk(KERN_WARNING "too many endpoints\n");
                                        break;
                                }
                        }
-                       endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-                       if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+                       endpoints[epidx].out_ep = usb_endpoint_num(ep);
+                       if (usb_endpoint_xfer_int(ep))
                                endpoints[epidx].out_interval = ep->bInterval;
                        else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW)
                                /*
@@ -1428,8 +1428,8 @@ static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
                                        break;
                                }
                        }
-                       endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-                       if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+                       endpoints[epidx].in_ep = usb_endpoint_num(ep);
+                       if (usb_endpoint_xfer_int(ep))
                                endpoints[epidx].in_interval = ep->bInterval;
                        else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW)
                                endpoints[epidx].in_interval = 1;
@@ -1495,20 +1495,20 @@ static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi,
 
        for (i = 0; i < intfd->bNumEndpoints; ++i) {
                epd = get_endpoint(hostif, i);
-               if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
-                   (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
+               if (usb_endpoint_type(epd) != USB_ENDPOINT_XFER_BULK &&
+                   usb_endpoint_type(epd) != USB_ENDPOINT_XFER_INT)
                        continue;
                if (out_eps < max_endpoints &&
-                   (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
-                       endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-                       if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+                   usb_endpoint_dir_out(epd)) {
+                       endpoint[out_eps].out_ep = usb_endpoint_num(epd);
+                       if (usb_endpoint_xfer_int(epd))
                                endpoint[out_eps].out_interval = epd->bInterval;
                        ++out_eps;
                }
                if (in_eps < max_endpoints &&
-                   (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
-                       endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-                       if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+                   usb_endpoint_dir_in(epd)) {
+                       endpoint[in_eps].in_ep = usb_endpoint_num(epd);
+                       if (usb_endpoint_xfer_int(epd))
                                endpoint[in_eps].in_interval = epd->bInterval;
                        ++in_eps;
                }
@@ -1607,21 +1607,21 @@ static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi,
        }
 
        epd = get_endpoint(hostif, 0);
-       if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
-           (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) {
+       if (usb_endpoint_dir_out(epd) ||
+           usb_endpoint_type(epd) != USB_ENDPOINT_XFER_INT) {
                snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n");
                return -ENXIO;
        }
        epd = get_endpoint(hostif, 2);
-       if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
-           (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
+       if (usb_endpoint_dir_in(epd) ||
+           usb_endpoint_type(epd) != USB_ENDPOINT_XFER_BULK) {
                snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n");
                return -ENXIO;
        }
        if (endpoint->out_cables > 0x0001) {
                epd = get_endpoint(hostif, 4);
-               if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
-                   (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
+               if (usb_endpoint_dir_in(epd) ||
+                   usb_endpoint_type(epd) != USB_ENDPOINT_XFER_BULK) {
                        snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n");
                        return -ENXIO;
                }

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index a492461..9ce626f 100644 (file)
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -1755,11 +1755,11 @@ static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
        if (get_iface_desc(hostif)->bNumEndpoints < 1)
                return 0;
        ep = get_endpoint(hostif, 0);
-       if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
-           (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
+       if (usb_endpoint_dir_out(ep) ||
+           usb_endpoint_type(ep) != USB_ENDPOINT_XFER_INT)
                return 0;
 
-       epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+       epnum = usb_endpoint_num(ep);
        buffer_length = le16_to_cpu(ep->wMaxPacketSize);
        transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
        if (!transfer_buffer)