[media] S_HW_FREQ_SEEK: set capability flags and return ENODATA instead of EAGAIN

Set the new capability flags in G_TUNER and return ENODATA if no channels
were found.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/radio/radio-mr800.c

@@ -295,7 +295,8 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 	v->type = V4L2_TUNER_RADIO;
 	v->rangelow = FREQ_MIN * FREQ_MUL;
 	v->rangehigh = FREQ_MAX * FREQ_MUL;
-	v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+	v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
+		V4L2_TUNER_CAP_HWSEEK_WRAP;
 	v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 	v->audmode = radio->stereo ?
 		V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO;
@@ -372,7 +373,7 @@ static int vidioc_s_hw_freq_seek(struct file *file, void *priv,
 	timeout = jiffies + msecs_to_jiffies(30000);
 	for (;;) {
 		if (time_after(jiffies, timeout)) {
-			retval = -EAGAIN;
+			retval = -ENODATA;
 			break;
 		}
 		if (schedule_timeout_interruptible(msecs_to_jiffies(10))) {

drivers/media/radio/radio-wl1273.c

@@ -1514,7 +1514,8 @@ static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
 	tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
 
 	tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
-		V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
+		V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
+		V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
 
 	if (radio->stereo)
 		tuner->audmode = V4L2_TUNER_MODE_STEREO;

drivers/media/radio/si470x/radio-si470x-common.c

@@ -363,7 +363,7 @@ static int si470x_set_seek(struct si470x_device *radio,
 
 	/* try again, if timed out */
 	if (retval == 0 && timed_out)
-		return -EAGAIN;
+		return -ENODATA;
 	return retval;
 }
 
@@ -596,7 +596,9 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
 	strcpy(tuner->name, "FM");
 	tuner->type = V4L2_TUNER_RADIO;
 	tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
-			    V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO;
+			    V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO |
+			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |
+			    V4L2_TUNER_CAP_HWSEEK_WRAP;
 
 	/* range limits */
 	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {

drivers/media/radio/wl128x/fmdrv_rx.c

@@ -251,7 +251,7 @@ int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward,
 	if (!timeleft) {
 		fmerr("Timeout(%d sec),didn't get tune ended int\n",
 			   jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
-		return -ETIMEDOUT;
+		return -ENODATA;
 	}
 
 	int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT);

drivers/media/radio/wl128x/fmdrv_v4l2.c

@@ -285,7 +285,9 @@ static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv,
 	tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO |
 	((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0);
 	tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS |
-			    V4L2_TUNER_CAP_LOW;
+			    V4L2_TUNER_CAP_LOW |
+			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |
+			    V4L2_TUNER_CAP_HWSEEK_WRAP;
 	tuner->audmode = (stereo_mono_mode ?
 			  V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO);
 

sound/i2c/other/tea575x-tuner.c

@@ -191,6 +191,8 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 	strcpy(v->name, "FM");
 	v->type = V4L2_TUNER_RADIO;
 	v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+	if (!tea->cannot_read_data)
+		v->capability |= V4L2_TUNER_CAP_HWSEEK_BOUNDED;
 	v->rangelow = FREQ_LO;
 	v->rangehigh = FREQ_HI;
 	v->rxsubchans = tea->stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
@@ -299,7 +301,7 @@ static int vidioc_s_hw_freq_seek(struct file *file, void *fh,
 	}
 	tea->val &= ~TEA575X_BIT_SEARCH;
 	snd_tea575x_set_freq(tea);
-	return -EAGAIN;
+	return -ENODATA;
 }
 
 static int tea575x_s_ctrl(struct v4l2_ctrl *ctrl)