[PATCH v2 2/3] media: usb: pvrusb2: Fix Wcast-function-type-strict warnings

[Ricardo Ribalda]

Building with LLVM=1 throws the following warning:
drivers/media/usb/pvrusb2/pvrusb2-context.c:110:6: warning: cast from 'void 
(*)(struct pvr2_context *)' to 'void (*)(void *)' converts to incompatible 
function type [-Wcast-function-type-strict]
drivers/media/usb/pvrusb2/pvrusb2-v4l2.c:1070:30: warning: cast from 'void 
(*)(struct pvr2_v4l2_fh *)' to 'pvr2_stream_callback' (aka 'void (*)(void *)') 
converts to incompatible function type [-Wcast-function-type-strict] 
drivers/media/usb/pvrusb2/pvrusb2-dvb.c:152:6: warning: cast from 'void 
(*)(struct pvr2_dvb_adapter *)' to 'pvr2_stream_callback' (aka 'void (*)(void 
*)') converts to incompatible function type [-Wcast-function-type-strict]

Reviewed-by: Nathan Chancellor <nat...@kernel.org>
Signed-off-by: Ricardo Ribalda <riba...@chromium.org>
---
 drivers/media/usb/pvrusb2/pvrusb2-context.c | 5 +++--
 drivers/media/usb/pvrusb2/pvrusb2-dvb.c     | 7 ++++---
 drivers/media/usb/pvrusb2/pvrusb2-v4l2.c    | 7 ++++---
 3 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c 
b/drivers/media/usb/pvrusb2/pvrusb2-context.c
index 1764674de98bc..16edabda191c4 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-context.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c
@@ -90,8 +90,9 @@ static void pvr2_context_destroy(struct pvr2_context *mp)
 }
 
 
-static void pvr2_context_notify(struct pvr2_context *mp)
+static void pvr2_context_notify(void *data)
 {
+       struct pvr2_context *mp = data;
        pvr2_context_set_notify(mp,!0);
 }
 
@@ -107,7 +108,7 @@ static void pvr2_context_check(struct pvr2_context *mp)
                           "pvr2_context %p (initialize)", mp);
                /* Finish hardware initialization */
                if (pvr2_hdw_initialize(mp->hdw,
-                                       (void (*)(void *))pvr2_context_notify,
+                                       pvr2_context_notify,
                                        mp)) {
                        mp->video_stream.stream =
                                pvr2_hdw_get_video_stream(mp->hdw);
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-dvb.c 
b/drivers/media/usb/pvrusb2/pvrusb2-dvb.c
index 26811efe0fb58..8b9f1a09bd53d 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-dvb.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-dvb.c
@@ -88,8 +88,9 @@ static int pvr2_dvb_feed_thread(void *data)
        return stat;
 }
 
-static void pvr2_dvb_notify(struct pvr2_dvb_adapter *adap)
+static void pvr2_dvb_notify(void *data)
 {
+       struct pvr2_dvb_adapter *adap = data;
        wake_up(&adap->buffer_wait_data);
 }
 
@@ -148,8 +149,8 @@ static int pvr2_dvb_stream_do_start(struct pvr2_dvb_adapter 
*adap)
                if (!(adap->buffer_storage[idx])) return -ENOMEM;
        }
 
-       pvr2_stream_set_callback(pvr->video_stream.stream,
-                                (pvr2_stream_callback) pvr2_dvb_notify, adap);
+       pvr2_stream_set_callback(pvr->video_stream.stream, pvr2_dvb_notify,
+                                adap);
 
        ret = pvr2_stream_set_buffer_count(stream, PVR2_DVB_BUFFER_COUNT);
        if (ret < 0) return ret;
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c 
b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
index c04ab7258d645..590f80949bbfc 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
@@ -1032,9 +1032,10 @@ static int pvr2_v4l2_open(struct file *file)
        return 0;
 }
 
-
-static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp)
+static void pvr2_v4l2_notify(void *data)
 {
+       struct pvr2_v4l2_fh *fhp = data;
+
        wake_up(&fhp->wait_data);
 }
 
@@ -1067,7 +1068,7 @@ static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
 
        hdw = fh->channel.mc_head->hdw;
        sp = fh->pdi->stream->stream;
-       pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh);
+       pvr2_stream_set_callback(sp, pvr2_v4l2_notify, fh);
        pvr2_hdw_set_stream_type(hdw,fh->pdi->config);
        if ((ret = pvr2_hdw_set_streaming(hdw,!0)) < 0) return ret;
        return pvr2_ioread_set_enabled(fh->rhp,!0);

-- 
2.44.0.rc0.258.g7320e95886-goog