[PATCH v5 10/12] media: uvcvideo: Use dev_ printk aliases

Ricardo Ribalda
2020-12-21T18:45:37Z

Replace all the uses of printk() and uvc_printk() with its
equivalent dev_ alias macros.

Modify uvc_warn_once() macro to use dev_info instead printk().

They are more standard across the kernel tree and provide
more context about the error.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
drivers/media/usb/uvc/uvc_ctrl.c | 12 +++----
drivers/media/usb/uvc/uvc_driver.c | 50 ++++++++++++++++--------------
drivers/media/usb/uvc/uvc_entity.c | 10 +++---
drivers/media/usb/uvc/uvc_status.c | 13 ++++----
drivers/media/usb/uvc/uvc_video.c | 48 ++++++++++++++--------------
drivers/media/usb/uvc/uvcvideo.h | 25 +++++++--------
6 files changed, 81 insertions(+), 77 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 374822b1ee94..1f1323a649fb 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1326,8 +1326,8 @@ static void __uvc_ctrl_status_event_work(struct uvc_device *dev,
w->urb->interval = dev->int_ep->desc.bInterval;
ret = usb_submit_urb(w->urb, GFP_KERNEL);
if (ret < 0)
- uvc_printk(KERN_ERR, "Failed to resubmit status URB (%d).\n",
- ret);
+ dev_err(&dev->udev->dev,
+ "Failed to resubmit status URB (%d).\n", ret);
}

static void uvc_ctrl_status_event_work(struct work_struct *work)
@@ -2038,10 +2038,10 @@ int uvc_ctrl_restore_values(struct uvc_device *dev)
if (!ctrl->initialized || !ctrl->modified ||
(ctrl->info.flags & UVC_CTRL_FLAG_RESTORE) == 0)
continue;
-
- printk(KERN_INFO "restoring control %pUl/%u/%u\n",
- ctrl->info.entity, ctrl->info.index,
- ctrl->info.selector);
+ dev_info(&dev->udev->dev,
+ "restoring control %pUl/%u/%u\n",
+ ctrl->info.entity, ctrl->info.index,
+ ctrl->info.selector);
ctrl->dirty = 1;
}

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 7af37d4bd60a..c98d57680e5c 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -536,8 +536,8 @@ static int uvc_parse_format(struct uvc_device *dev,
sizeof(format->name));
format->fcc = fmtdesc->fcc;
} else {
- uvc_printk(KERN_INFO, "Unknown video format %pUl\n",
- &buffer[5]);
+ dev_info(&streaming->intf->dev,
+ "Unknown video format %pUl\n", &buffer[5]);
snprintf(format->name, sizeof(format->name), "%pUl\n",
&buffer[5]);
format->fcc = 0;
@@ -2137,7 +2137,7 @@ static int uvc_scan_device(struct uvc_device *dev)
uvc_scan_fallback(dev);

if (list_empty(&dev->chains)) {
- uvc_printk(KERN_INFO, "No valid video chain found.\n");
+ dev_info(&dev->udev->dev, "No valid video chain found.\n");
return -1;
}

@@ -2296,8 +2296,9 @@ int uvc_register_video_device(struct uvc_device *dev,

ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
if (ret < 0) {
- uvc_printk(KERN_ERR, "Failed to register %s device (%d).\n",
- v4l2_type_names[type], ret);
+ dev_err(&stream->intf->dev,
+ "Failed to register %s device (%d).\n",
+ v4l2_type_names[type], ret);
return ret;
}

@@ -2313,8 +2314,8 @@ static int uvc_register_video(struct uvc_device *dev,
/* Initialize the streaming interface with default parameters. */
ret = uvc_video_init(stream);
if (ret < 0) {
- uvc_printk(KERN_ERR, "Failed to initialize the device (%d).\n",
- ret);
+ dev_err(&stream->intf->dev,
+ "Failed to initialize the device (%d).\n", ret);
return ret;
}

@@ -2348,8 +2349,9 @@ static int uvc_register_terms(struct uvc_device *dev,

stream = uvc_stream_by_id(dev, term->id);
if (stream == NULL) {
- uvc_printk(KERN_INFO, "No streaming interface found "
- "for terminal %u.", term->id);
+ dev_info(&dev->udev->dev,
+ "No streaming interface found for terminal %u.",
+ term->id);
continue;
}

@@ -2382,8 +2384,8 @@ static int uvc_register_chains(struct uvc_device *dev)
#ifdef CONFIG_MEDIA_CONTROLLER
ret = uvc_mc_register_entities(chain);
if (ret < 0)
- uvc_printk(KERN_INFO,
- "Failed to register entities (%d).\n", ret);
+ dev_info(&dev->udev->dev,
+ "Failed to register entities (%d).\n", ret);
#endif
}

@@ -2486,17 +2488,18 @@ static int uvc_probe(struct usb_interface *intf,
goto error;
}

- uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n",
- dev->uvc_version >> 8, dev->uvc_version & 0xff,
- udev->product ? udev->product : "<unnamed>",
- le16_to_cpu(udev->descriptor.idVendor),
- le16_to_cpu(udev->descriptor.idProduct));
+ dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
+ dev->uvc_version >> 8, dev->uvc_version & 0xff,
+ udev->product ? udev->product : "<unnamed>",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct));

if (dev->quirks != dev->info->quirks) {
- uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module "
- "parameter for testing purpose.\n", dev->quirks);
- uvc_printk(KERN_INFO, "Please report required quirks to the "
- "linux-uvc-devel mailing list.\n");
+ dev_info(&dev->udev->dev,
+ "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
+ dev->quirks);
+ dev_info(&dev->udev->dev,
+ "Please report required quirks to the linux-uvc-devel mailing list.\n");
}

/* Register the V4L2 device. */
@@ -2525,9 +2528,9 @@ static int uvc_probe(struct usb_interface *intf,

/* Initialize the interrupt URB. */
if ((ret = uvc_status_init(dev)) < 0) {
- uvc_printk(KERN_INFO, "Unable to initialize the status "
- "endpoint (%d), status interrupt will not be "
- "supported.\n", ret);
+ dev_info(&dev->udev->dev,
+ "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
+ ret);
}

ret = uvc_gpio_init_irq(dev);
@@ -3233,7 +3236,6 @@ static int __init uvc_init(void)
return ret;
}

- printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n");
return 0;
}

diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c
index 6a9ba5b498db..7c4d2f93d351 100644
--- a/drivers/media/usb/uvc/uvc_entity.c
+++ b/drivers/media/usb/uvc/uvc_entity.c
@@ -140,8 +140,9 @@ int uvc_mc_register_entities(struct uvc_video_chain *chain)
list_for_each_entry(entity, &chain->entities, chain) {
ret = uvc_mc_init_entity(chain, entity);
if (ret < 0) {
- uvc_printk(KERN_INFO, "Failed to initialize entity for "
- "entity %u\n", entity->id);
+ dev_info(&chain->dev->udev->dev,
+ "Failed to initialize entity for entity %u\n",
+ entity->id);
return ret;
}
}
@@ -149,8 +150,9 @@ int uvc_mc_register_entities(struct uvc_video_chain *chain)
list_for_each_entry(entity, &chain->entities, chain) {
ret = uvc_mc_create_links(chain, entity);
if (ret < 0) {
- uvc_printk(KERN_INFO, "Failed to create links for "
- "entity %u\n", entity->id);
+ dev_info(&chain->dev->udev->dev,
+ "Failed to create links for entity %u\n",
+ entity->id);
return ret;
}
}
diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c
index 2bdb0ff203f8..36fa196a9258 100644
--- a/drivers/media/usb/uvc/uvc_status.c
+++ b/drivers/media/usb/uvc/uvc_status.c
@@ -208,8 +208,9 @@ static void uvc_status_complete(struct urb *urb)
return;

default:
- uvc_printk(KERN_WARNING, "Non-zero status (%d) in status "
- "completion handler.\n", urb->status);
+ dev_warn(&dev->udev->dev,
+ "Non-zero status (%d) in status completion handler.\n",
+ urb->status);
return;
}

@@ -243,10 +244,10 @@ static void uvc_status_complete(struct urb *urb)

/* Resubmit the URB. */
urb->interval = dev->int_ep->desc.bInterval;
- if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
- uvc_printk(KERN_ERR, "Failed to resubmit status URB (%d).\n",
- ret);
- }
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret < 0)
+ dev_err(&dev->udev->dev,
+ "Failed to resubmit status URB (%d).\n", ret);
}

int uvc_status_init(struct uvc_device *dev)
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index a6a441d92b94..71e643e6d006 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -76,9 +76,9 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
if (likely(ret == size))
return 0;

- uvc_printk(KERN_ERR,
- "Failed to query (%s) UVC control %u on unit %u: %d (exp. %u).\n",
- uvc_query_name(query), cs, unit, ret, size);
+ dev_err(&dev->udev->dev,
+ "Failed to query (%s) UVC control %u on unit %u: %d (exp. %u).\n",
+ uvc_query_name(query), cs, unit, ret, size);

if (ret != -EPIPE)
return ret;
@@ -254,9 +254,9 @@ static int uvc_get_video_ctrl(struct uvc_streaming *stream,
ret = -EIO;
goto out;
} else if (ret != size) {
- uvc_printk(KERN_ERR, "Failed to query (%u) UVC %s control : "
- "%d (exp. %u).\n", query, probe ? "probe" : "commit",
- ret, size);
+ dev_err(&stream->intf->dev,
+ "Failed to query (%u) UVC %s control : %d (exp. %u).\n",
+ query, probe ? "probe" : "commit", ret, size);
ret = -EIO;
goto out;
}
@@ -334,9 +334,9 @@ static int uvc_set_video_ctrl(struct uvc_streaming *stream,
probe ? UVC_VS_PROBE_CONTROL : UVC_VS_COMMIT_CONTROL, data,
size, uvc_timeout_param);
if (ret != size) {
- uvc_printk(KERN_ERR, "Failed to set UVC %s control : "
- "%d (exp. %u).\n", probe ? "probe" : "commit",
- ret, size);
+ dev_err(&stream->intf->dev,
+ "Failed to set UVC %s control : %d (exp. %u).\n",
+ probe ? "probe" : "commit", ret, size);
ret = -EIO;
}

@@ -1120,8 +1120,8 @@ static void uvc_video_copy_data_work(struct work_struct *work)

ret = usb_submit_urb(uvc_urb->urb, GFP_KERNEL);
if (ret < 0)
- uvc_printk(KERN_ERR, "Failed to resubmit video URB (%d).\n",
- ret);
+ dev_err(&uvc_urb->stream->intf->dev,
+ "Failed to resubmit video URB (%d).\n", ret);
}

static void uvc_video_decode_data(struct uvc_urb *uvc_urb,
@@ -1507,8 +1507,9 @@ static void uvc_video_complete(struct urb *urb)
break;

default:
- uvc_printk(KERN_WARNING, "Non-zero status (%d) in video "
- "completion handler.\n", urb->status);
+ dev_warn(&stream->intf->dev,
+ "Non-zero status (%d) in video completion handler.\n",
+ urb->status);
fallthrough;
case -ENOENT: /* usb_poison_urb() called. */
if (stream->frozen)
@@ -1545,9 +1546,8 @@ static void uvc_video_complete(struct urb *urb)
if (!uvc_urb->async_operations) {
ret = usb_submit_urb(uvc_urb->urb, GFP_ATOMIC);
if (ret < 0)
- uvc_printk(KERN_ERR,
- "Failed to resubmit video URB (%d).\n",
- ret);
+ dev_err(&stream->intf->dev,
+ "Failed to resubmit video URB (%d).\n", ret);
return;
}

@@ -1893,8 +1893,9 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,
for_each_uvc_urb(uvc_urb, stream) {
ret = usb_submit_urb(uvc_urb->urb, gfp_flags);
if (ret < 0) {
- uvc_printk(KERN_ERR, "Failed to submit URB %u (%d).\n",
- uvc_urb_index(uvc_urb), ret);
+ dev_err(&stream->intf->dev,
+ "Failed to submit URB %u (%d).\n",
+ uvc_urb_index(uvc_urb), ret);
uvc_video_stop_transfer(stream, 1);
return ret;
}
@@ -1989,7 +1990,8 @@ int uvc_video_init(struct uvc_streaming *stream)
int ret;

if (stream->nformats == 0) {
- uvc_printk(KERN_INFO, "No supported video formats found.\n");
+ dev_info(&stream->intf->dev,
+ "No supported video formats found.\n");
return -EINVAL;
}

@@ -2029,8 +2031,8 @@ int uvc_video_init(struct uvc_streaming *stream)
}

if (format->nframes == 0) {
- uvc_printk(KERN_INFO, "No frame descriptor found for the "
- "default format.\n");
+ dev_info(&stream->intf->dev,
+ "No frame descriptor found for the default format.\n");
return -EINVAL;
}

@@ -2064,8 +2066,8 @@ int uvc_video_init(struct uvc_streaming *stream)
if (stream->intf->num_altsetting == 1)
stream->decode = uvc_video_encode_bulk;
else {
- uvc_printk(KERN_INFO, "Isochronous endpoints are not "
- "supported for video output devices.\n");
+ dev_info(&stream->intf->dev,
+ "Isochronous endpoints are not supported for video output devices.\n");
return -EINVAL;
}
}
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 32c1ba246d97..a4ebd56bb987 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -757,20 +757,17 @@ extern unsigned int uvc_trace_param;
extern unsigned int uvc_timeout_param;
extern unsigned int uvc_hw_timestamps_param;

-#define uvc_trace(flag, msg...) \
- do { \
- if (uvc_trace_param & flag) \
- printk(KERN_DEBUG "uvcvideo: " msg); \
- } while (0)
-
-#define uvc_warn_once(dev, warn, msg...) \
- do { \
- if (!test_and_set_bit(warn, &dev->warnings)) \
- printk(KERN_INFO "uvcvideo: " msg); \
- } while (0)
-
-#define uvc_printk(level, msg...) \
- printk(level "uvcvideo: " msg)
+#define uvc_trace(flag, fmt, ...) \
+do { \
+ if (uvc_trace_param & flag) \
+ printk(KERN_DEBUG "uvcvideo: " fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define uvc_warn_once(_dev, warn, fmt, ...) \
+do { \
+ if (!test_and_set_bit(warn, &(_dev)->warnings)) \
+ dev_info(&(_dev)->udev->dev, fmt, ##__VA_ARGS__); \
+} while (0)

/* --------------------------------------------------------------------------
* Internal functions.
--
2.29.2.684.gfbc64c5ab5-goog