V4L/DVB (7723): pvrusb2: Clean up input selection list generation in V4L interface
authorMike Isely <isely@pobox.com>
Mon, 21 Apr 2008 06:52:34 +0000 (03:52 -0300)
committerMauro Carvalho Chehab <mchehab@infradead.org>
Thu, 24 Apr 2008 17:09:49 +0000 (14:09 -0300)
Change how list of possible pvrusb2 inputs is generated to include
only those interfaces that make sense for the interface instance.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
drivers/media/video/pvrusb2/pvrusb2-v4l2.c

index b415141..087a182 100644 (file)
@@ -57,6 +57,9 @@ struct pvr2_v4l2_fh {
        struct pvr2_v4l2_fh *vprev;
        wait_queue_head_t wait_data;
        int fw_mode_flag;
+       /* Map contiguous ordinal value to input id */
+       unsigned char *input_map;
+       unsigned int input_cnt;
 };
 
 struct pvr2_v4l2 {
@@ -66,10 +69,6 @@ struct pvr2_v4l2 {
 
        struct v4l2_prio_state prio;
 
-       /* Map contiguous ordinal value to input id */
-       unsigned char *input_map;
-       unsigned int input_cnt;
-
        /* streams - Note that these must be separately, individually,
         * allocated pointers.  This is because the v4l core is going to
         * manage their deletion - separately, individually...  */
@@ -269,11 +268,11 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
                memset(&tmp,0,sizeof(tmp));
                tmp.index = vi->index;
                ret = 0;
-               if ((vi->index < 0) || (vi->index >= vp->input_cnt)) {
+               if ((vi->index < 0) || (vi->index >= fh->input_cnt)) {
                        ret = -EINVAL;
                        break;
                }
-               val = vp->input_map[vi->index];
+               val = fh->input_map[vi->index];
                switch (val) {
                case PVR2_CVAL_INPUT_TV:
                case PVR2_CVAL_INPUT_DTV:
@@ -321,8 +320,8 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
                val = 0;
                ret = pvr2_ctrl_get_value(cptr,&val);
                vi->index = 0;
-               for (idx = 0; idx < vp->input_cnt; idx++) {
-                       if (vp->input_map[idx] == val) {
+               for (idx = 0; idx < fh->input_cnt; idx++) {
+                       if (fh->input_map[idx] == val) {
                                vi->index = idx;
                                break;
                        }
@@ -333,13 +332,13 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
        case VIDIOC_S_INPUT:
        {
                struct v4l2_input *vi = (struct v4l2_input *)arg;
-               if ((vi->index < 0) || (vi->index >= vp->input_cnt)) {
+               if ((vi->index < 0) || (vi->index >= fh->input_cnt)) {
                        ret = -ERANGE;
                        break;
                }
                ret = pvr2_ctrl_set_value(
                        pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT),
-                       vp->input_map[vi->index]);
+                       fh->input_map[vi->index]);
                break;
        }
 
@@ -838,10 +837,6 @@ static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)
                pvr2_v4l2_dev_destroy(vp->dev_radio);
                vp->dev_radio = NULL;
        }
-       if (vp->input_map) {
-               kfree(vp->input_map);
-               vp->input_map = NULL;
-       }
 
        pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp);
        pvr2_channel_done(&vp->channel);
@@ -915,6 +910,10 @@ static int pvr2_v4l2_release(struct inode *inode, struct file *file)
        pvr2_channel_done(&fhp->channel);
        pvr2_trace(PVR2_TRACE_STRUCT,
                   "Destroying pvr_v4l2_fh id=%p",fhp);
+       if (fhp->input_map) {
+               kfree(fhp->input_map);
+               fhp->input_map = NULL;
+       }
        kfree(fhp);
        if (vp->channel.mc_head->disconnect_flag && !vp->vfirst) {
                pvr2_v4l2_destroy_no_lock(vp);
@@ -930,6 +929,7 @@ static int pvr2_v4l2_open(struct inode *inode, struct file *file)
        struct pvr2_v4l2 *vp;
        struct pvr2_hdw *hdw;
        unsigned int input_mask = 0;
+       unsigned int input_cnt,idx;
        int ret = 0;
 
        dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);
@@ -979,6 +979,27 @@ static int pvr2_v4l2_open(struct inode *inode, struct file *file)
                return ret;
        }
 
+       input_mask &= pvr2_hdw_get_input_available(hdw);
+       input_cnt = 0;
+       for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
+               if (input_mask & (1 << idx)) input_cnt++;
+       }
+       fhp->input_cnt = input_cnt;
+       fhp->input_map = kzalloc(input_cnt,GFP_KERNEL);
+       if (!fhp->input_map) {
+               pvr2_channel_done(&fhp->channel);
+               pvr2_trace(PVR2_TRACE_STRUCT,
+                          "Destroying pvr_v4l2_fh id=%p (input map failure)",
+                          fhp);
+               kfree(fhp);
+               return -ENOMEM;
+       }
+       input_cnt = 0;
+       for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
+               if (!(input_mask & (1 << idx))) continue;
+               fhp->input_map[input_cnt++] = idx;
+       }
+
        fhp->vnext = NULL;
        fhp->vprev = vp->vlast;
        if (vp->vlast) {
@@ -1217,8 +1238,6 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
 struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)
 {
        struct pvr2_v4l2 *vp;
-       struct pvr2_hdw *hdw;
-       unsigned int input_mask,input_cnt,idx;
 
        vp = kzalloc(sizeof(*vp),GFP_KERNEL);
        if (!vp) return vp;
@@ -1227,26 +1246,12 @@ struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)
 
        vp->channel.check_func = pvr2_v4l2_internal_check;
 
-       hdw = vp->channel.mc_head->hdw;
-       input_mask = pvr2_hdw_get_input_available(hdw);
-       input_cnt = 0;
-       for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
-               if (input_mask & (1 << idx)) input_cnt++;
-       }
-       vp->input_cnt = input_cnt;
-       vp->input_map = kzalloc(input_cnt,GFP_KERNEL);
-       if (!vp->input_map) goto fail;
-       input_cnt = 0;
-       for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
-               if (!(input_mask & (1 << idx))) continue;
-               vp->input_map[input_cnt++] = idx;
-       }
-
        /* register streams */
        vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL);
        if (!vp->dev_video) goto fail;
        pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_GRABBER);
-       if (input_mask & (1 << PVR2_CVAL_INPUT_RADIO)) {
+       if (pvr2_hdw_get_input_available(vp->channel.mc_head->hdw) &
+           (1 << PVR2_CVAL_INPUT_RADIO)) {
                vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL);
                if (!vp->dev_radio) goto fail;
                pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO);