diff mbox series

[v3,5/6] usb: gadget: f_fs: replace private pr_vdebug() with dev_vdbg

Message ID 1679911940-4727-5-git-send-email-quic_linyyuan@quicinc.com (mailing list archive)
State New, archived
Headers show
Series [v3,1/6] usb: gadget: ffs: remove ENTER() macro | expand

Commit Message

Linyu Yuan March 27, 2023, 10:12 a.m. UTC 
Use command dev_vdbg() macro to show some debug message.

Also replace some pr_debug/err/warn/info() to dev_dbg/err/warn/info().

Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
---
v3: new patch in this version

 drivers/usb/gadget/function/f_fs.c | 98 +++++++++++++++++++-------------------
 drivers/usb/gadget/function/u_fs.h |  6 ---
 2 files changed, 49 insertions(+), 55 deletions(-)

Comments

Greg Kroah-Hartman March 29, 2023, 6:55 a.m. UTC | #1 
On Mon, Mar 27, 2023 at 06:12:19PM +0800, Linyu Yuan wrote:
> Use command dev_vdbg() macro to show some debug message.
> 
> Also replace some pr_debug/err/warn/info() to dev_dbg/err/warn/info().
> 
> Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
> ---
> v3: new patch in this version
> 
>  drivers/usb/gadget/function/f_fs.c | 98 +++++++++++++++++++-------------------
>  drivers/usb/gadget/function/u_fs.h |  6 ---
>  2 files changed, 49 insertions(+), 55 deletions(-)
> 
> diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
> index 25461f1..0761eaa 100644
> --- a/drivers/usb/gadget/function/f_fs.c
> +++ b/drivers/usb/gadget/function/f_fs.c
> @@ -317,12 +317,12 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len)
>  static int __ffs_ep0_stall(struct ffs_data *ffs)
>  {
>  	if (ffs->ev.can_stall) {
> -		pr_vdebug("ep0 stall\n");
> +		dev_vdbg(ffs->dev, "ep0 stall\n");
>  		usb_ep_set_halt(ffs->gadget->ep0);
>  		ffs->setup_state = FFS_NO_SETUP;
>  		return -EL2HLT;
>  	} else {
> -		pr_debug("bogus ep0 stall!\n");
> +		dev_dbg(ffs->dev, "bogus ep0 stall!\n");
>  		return -ESRCH;
>  	}
>  }
> @@ -361,7 +361,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf,
>  
>  		/* Handle data */
>  		if (ffs->state == FFS_READ_DESCRIPTORS) {
> -			pr_info("read descriptors\n");
> +			dev_info(ffs->dev, "read descriptors\n");

When a driver works properly, it should be quiet.  Why is this driver
being noisy for normal operations?  Shouldn't these types of messages be
moved to be debugging only?

thanks,

greg k-h
Linyu Yuan March 29, 2023, 7:01 a.m. UTC | #2 
On 3/29/2023 2:55 PM, Greg Kroah-Hartman wrote:
> On Mon, Mar 27, 2023 at 06:12:19PM +0800, Linyu Yuan wrote:
>> Use command dev_vdbg() macro to show some debug message.
>>
>> Also replace some pr_debug/err/warn/info() to dev_dbg/err/warn/info().
>>
>> Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
>> ---
>> v3: new patch in this version
>>
>>   drivers/usb/gadget/function/f_fs.c | 98 +++++++++++++++++++-------------------
>>   drivers/usb/gadget/function/u_fs.h |  6 ---
>>   2 files changed, 49 insertions(+), 55 deletions(-)
>>
>> diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
>> index 25461f1..0761eaa 100644
>> --- a/drivers/usb/gadget/function/f_fs.c
>> +++ b/drivers/usb/gadget/function/f_fs.c
>> @@ -317,12 +317,12 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len)
>>   static int __ffs_ep0_stall(struct ffs_data *ffs)
>>   {
>>   	if (ffs->ev.can_stall) {
>> -		pr_vdebug("ep0 stall\n");
>> +		dev_vdbg(ffs->dev, "ep0 stall\n");
>>   		usb_ep_set_halt(ffs->gadget->ep0);
>>   		ffs->setup_state = FFS_NO_SETUP;
>>   		return -EL2HLT;
>>   	} else {
>> -		pr_debug("bogus ep0 stall!\n");
>> +		dev_dbg(ffs->dev, "bogus ep0 stall!\n");
>>   		return -ESRCH;
>>   	}
>>   }
>> @@ -361,7 +361,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf,
>>   
>>   		/* Handle data */
>>   		if (ffs->state == FFS_READ_DESCRIPTORS) {
>> -			pr_info("read descriptors\n");
>> +			dev_info(ffs->dev, "read descriptors\n");
> When a driver works properly, it should be quiet.  Why is this driver
> being noisy for normal operations?  Shouldn't these types of messages be
> moved to be debugging only?


just keep original design, if you accept, will change to dev_dbg().


>
> thanks,
>
> greg k-h
Greg Kroah-Hartman March 29, 2023, 7:31 a.m. UTC | #3 
On Wed, Mar 29, 2023 at 03:01:49PM +0800, Linyu Yuan wrote:
> 
> On 3/29/2023 2:55 PM, Greg Kroah-Hartman wrote:
> > On Mon, Mar 27, 2023 at 06:12:19PM +0800, Linyu Yuan wrote:
> > > Use command dev_vdbg() macro to show some debug message.
> > > 
> > > Also replace some pr_debug/err/warn/info() to dev_dbg/err/warn/info().
> > > 
> > > Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
> > > ---
> > > v3: new patch in this version
> > > 
> > >   drivers/usb/gadget/function/f_fs.c | 98 +++++++++++++++++++-------------------
> > >   drivers/usb/gadget/function/u_fs.h |  6 ---
> > >   2 files changed, 49 insertions(+), 55 deletions(-)
> > > 
> > > diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
> > > index 25461f1..0761eaa 100644
> > > --- a/drivers/usb/gadget/function/f_fs.c
> > > +++ b/drivers/usb/gadget/function/f_fs.c
> > > @@ -317,12 +317,12 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len)
> > >   static int __ffs_ep0_stall(struct ffs_data *ffs)
> > >   {
> > >   	if (ffs->ev.can_stall) {
> > > -		pr_vdebug("ep0 stall\n");
> > > +		dev_vdbg(ffs->dev, "ep0 stall\n");
> > >   		usb_ep_set_halt(ffs->gadget->ep0);
> > >   		ffs->setup_state = FFS_NO_SETUP;
> > >   		return -EL2HLT;
> > >   	} else {
> > > -		pr_debug("bogus ep0 stall!\n");
> > > +		dev_dbg(ffs->dev, "bogus ep0 stall!\n");
> > >   		return -ESRCH;
> > >   	}
> > >   }
> > > @@ -361,7 +361,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf,
> > >   		/* Handle data */
> > >   		if (ffs->state == FFS_READ_DESCRIPTORS) {
> > > -			pr_info("read descriptors\n");
> > > +			dev_info(ffs->dev, "read descriptors\n");
> > When a driver works properly, it should be quiet.  Why is this driver
> > being noisy for normal operations?  Shouldn't these types of messages be
> > moved to be debugging only?
> 
> 
> just keep original design, if you accept, will change to dev_dbg().

Please do.
diff mbox series

Patch

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 25461f1..0761eaa 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -317,12 +317,12 @@  static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len)
 static int __ffs_ep0_stall(struct ffs_data *ffs)
 {
 	if (ffs->ev.can_stall) {
-		pr_vdebug("ep0 stall\n");
+		dev_vdbg(ffs->dev, "ep0 stall\n");
 		usb_ep_set_halt(ffs->gadget->ep0);
 		ffs->setup_state = FFS_NO_SETUP;
 		return -EL2HLT;
 	} else {
-		pr_debug("bogus ep0 stall!\n");
+		dev_dbg(ffs->dev, "bogus ep0 stall!\n");
 		return -ESRCH;
 	}
 }
@@ -361,7 +361,7 @@  static ssize_t ffs_ep0_write(struct file *file, const char __user *buf,
 
 		/* Handle data */
 		if (ffs->state == FFS_READ_DESCRIPTORS) {
-			pr_info("read descriptors\n");
+			dev_info(ffs->dev, "read descriptors\n");
 			ret = __ffs_data_got_descs(ffs, data, len);
 			if (ret < 0)
 				break;
@@ -369,7 +369,7 @@  static ssize_t ffs_ep0_write(struct file *file, const char __user *buf,
 			ffs->state = FFS_READ_STRINGS;
 			ret = len;
 		} else {
-			pr_info("read strings\n");
+			dev_info(ffs->dev, "read strings\n");
 			ret = __ffs_data_got_strings(ffs, data, len);
 			if (ret < 0)
 				break;
@@ -749,7 +749,7 @@  static ssize_t ffs_copy_to_iter(struct ffs_data *ffs, void *data, int data_len,
 	 * aio_read(2) etc. system calls.  Writing data to an IN endpoint is not
 	 * affected.
 	 */
-	pr_err("functionfs read size %d > requested size %zd, dropping excess data. "
+	dev_err(ffs->dev, "functionfs read size %d > requested size %zd, dropping excess data. "
 	       "Align read buffer size to max packet size to avoid the problem.\n",
 	       data_len, ret);
 
@@ -911,7 +911,7 @@  static ssize_t __ffs_epfile_read_data(struct ffs_epfile *epfile,
 		return -EFAULT;
 
 	/* See ffs_copy_to_iter for more context. */
-	pr_warn("functionfs read size %d > requested size %zd, splitting request into multiple reads.",
+	dev_warn(epfile->ffs->dev, "functionfs read size %d > requested size %zd, splitting request into multiple reads.",
 		data_len, ret);
 
 	data_len -= ret;
@@ -1665,7 +1665,7 @@  static void ffs_data_opened(struct ffs_data *ffs)
 static void ffs_data_put(struct ffs_data *ffs)
 {
 	if (refcount_dec_and_test(&ffs->ref)) {
-		pr_info("%s(): freeing\n", __func__);
+		dev_info(ffs->dev, "%s(): freeing\n", __func__);
 		ffs_data_clear(ffs);
 		ffs_release_dev(ffs->private_data);
 		BUG_ON(waitqueue_active(&ffs->ev.waitq) ||
@@ -1945,7 +1945,7 @@  static int ffs_func_eps_enable(struct ffs_function *func)
 
 		ret = config_ep_by_speed(func->gadget, &func->function, ep->ep);
 		if (ret) {
-			pr_err("%s: config_ep_by_speed(%s) returned %d\n",
+			dev_err(ffs->dev, "%s: config_ep_by_speed(%s) returned %d\n",
 					__func__, ep->ep->name, ret);
 			break;
 		}
@@ -2006,14 +2006,14 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 
 	/* At least two bytes are required: length and type */
 	if (len < 2) {
-		pr_vdebug("descriptor too short\n");
+		dev_vdbg(ffs->dev, "descriptor too short\n");
 		return -EINVAL;
 	}
 
 	/* If we have at least as many bytes as the descriptor takes? */
 	length = _ds->bLength;
 	if (len < length) {
-		pr_vdebug("descriptor longer then available data\n");
+		dev_vdbg(ffs->dev, "descriptor longer then available data\n");
 		return -EINVAL;
 	}
 
@@ -2021,14 +2021,14 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 #define __entity_check_STRING(val)     (val)
 #define __entity_check_ENDPOINT(val)   ((val) & USB_ENDPOINT_NUMBER_MASK)
 #define __entity(type, val) do {					\
-		pr_vdebug("entity " #type "(%02x)\n", (val));		\
+		dev_vdbg(ffs->dev, "entity " #type "(%02x)\n", (val));		\
 		if (!__entity_check_ ##type(val)) {			\
-			pr_vdebug("invalid entity's value\n");		\
+			dev_vdbg(ffs->dev, "invalid entity's value\n");		\
 			return -EINVAL;					\
 		}							\
 		ret = entity(ffs, FFS_ ##type, &val, _ds, priv);		\
 		if (ret < 0) {						\
-			pr_debug("entity " #type "(%02x); ret = %d\n",	\
+			dev_dbg(ffs->dev, "entity " #type "(%02x); ret = %d\n",	\
 				 (val), ret);				\
 			return ret;					\
 		}							\
@@ -2041,13 +2041,13 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 	case USB_DT_STRING:
 	case USB_DT_DEVICE_QUALIFIER:
 		/* function can't have any of those */
-		pr_vdebug("descriptor reserved for gadget: %d\n",
+		dev_vdbg(ffs->dev, "descriptor reserved for gadget: %d\n",
 		      _ds->bDescriptorType);
 		return -EINVAL;
 
 	case USB_DT_INTERFACE: {
 		struct usb_interface_descriptor *ds = (void *)_ds;
-		pr_vdebug("interface descriptor\n");
+		dev_vdbg(ffs->dev, "interface descriptor\n");
 		if (length != sizeof *ds)
 			goto inv_length;
 
@@ -2060,7 +2060,7 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 
 	case USB_DT_ENDPOINT: {
 		struct usb_endpoint_descriptor *ds = (void *)_ds;
-		pr_vdebug("endpoint descriptor\n");
+		dev_vdbg(ffs->dev, "endpoint descriptor\n");
 		if (length != USB_DT_ENDPOINT_SIZE &&
 		    length != USB_DT_ENDPOINT_AUDIO_SIZE)
 			goto inv_length;
@@ -2070,17 +2070,17 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 
 	case USB_TYPE_CLASS | 0x01:
 		if (*current_class == USB_INTERFACE_CLASS_HID) {
-			pr_vdebug("hid descriptor\n");
+			dev_vdbg(ffs->dev, "hid descriptor\n");
 			if (length != sizeof(struct hid_descriptor))
 				goto inv_length;
 			break;
 		} else if (*current_class == USB_INTERFACE_CLASS_CCID) {
-			pr_vdebug("ccid descriptor\n");
+			dev_vdbg(ffs->dev, "ccid descriptor\n");
 			if (length != sizeof(struct ccid_descriptor))
 				goto inv_length;
 			break;
 		} else {
-			pr_vdebug("unknown descriptor: %d for class %d\n",
+			dev_vdbg(ffs->dev, "unknown descriptor: %d for class %d\n",
 			      _ds->bDescriptorType, *current_class);
 			return -EINVAL;
 		}
@@ -2092,7 +2092,7 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 
 	case USB_DT_INTERFACE_ASSOCIATION: {
 		struct usb_interface_assoc_descriptor *ds = (void *)_ds;
-		pr_vdebug("interface association descriptor\n");
+		dev_vdbg(ffs->dev, "interface association descriptor\n");
 		if (length != sizeof *ds)
 			goto inv_length;
 		if (ds->iFunction)
@@ -2101,7 +2101,7 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 		break;
 
 	case USB_DT_SS_ENDPOINT_COMP:
-		pr_vdebug("EP SS companion descriptor\n");
+		dev_vdbg(ffs->dev, "EP SS companion descriptor\n");
 		if (length != sizeof(struct usb_ss_ep_comp_descriptor))
 			goto inv_length;
 		break;
@@ -2112,16 +2112,16 @@  static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns
 	case USB_DT_SECURITY:
 	case USB_DT_CS_RADIO_CONTROL:
 		/* TODO */
-		pr_vdebug("unimplemented descriptor: %d\n", _ds->bDescriptorType);
+		dev_vdbg(ffs->dev, "unimplemented descriptor: %d\n", _ds->bDescriptorType);
 		return -EINVAL;
 
 	default:
 		/* We should never be here */
-		pr_vdebug("unknown descriptor: %d\n", _ds->bDescriptorType);
+		dev_vdbg(ffs->dev, "unknown descriptor: %d\n", _ds->bDescriptorType);
 		return -EINVAL;
 
 inv_length:
-		pr_vdebug("invalid length: %d (descriptor %d)\n",
+		dev_vdbg(ffs->dev, "invalid length: %d (descriptor %d)\n",
 			  _ds->bLength, _ds->bDescriptorType);
 		return -EINVAL;
 	}
@@ -2151,7 +2151,7 @@  static int __must_check ffs_do_descs(struct ffs_data *ffs, unsigned count, char
 		/* Record "descriptor" entity */
 		ret = entity(ffs, FFS_DESCRIPTOR, (u8 *)num, (void *)data, priv);
 		if (ret < 0) {
-			pr_debug("entity DESCRIPTOR(%02lx); ret = %d\n",
+			dev_dbg(ffs->dev, "entity DESCRIPTOR(%02lx); ret = %d\n",
 				 num, ret);
 			return ret;
 		}
@@ -2162,7 +2162,7 @@  static int __must_check ffs_do_descs(struct ffs_data *ffs, unsigned count, char
 		ret = ffs_do_single_desc(ffs, data, len, entity, priv,
 			&current_class);
 		if (ret < 0) {
-			pr_debug("%s returns %d\n", __func__, ret);
+			dev_dbg(ffs->dev, "%s returns %d\n", __func__, ret);
 			return ret;
 		}
 
@@ -2227,10 +2227,10 @@  static int __ffs_do_os_desc_header(struct ffs_data *ffs, enum ffs_os_desc_type *
 	u16 w_index = le16_to_cpu(desc->wIndex);
 
 	if (bcd_version == 0x1) {
-		pr_warn("bcdVersion must be 0x0100, stored in Little Endian order. "
+		dev_warn(ffs->dev, "bcdVersion must be 0x0100, stored in Little Endian order. "
 			"Userspace driver should be fixed, accepting 0x0001 for compatibility.\n");
 	} else if (bcd_version != 0x100) {
-		pr_vdebug("unsupported os descriptors version: 0x%x\n",
+		dev_vdbg(ffs->dev, "unsupported os descriptors version: 0x%x\n",
 			  bcd_version);
 		return -EINVAL;
 	}
@@ -2242,7 +2242,7 @@  static int __ffs_do_os_desc_header(struct ffs_data *ffs, enum ffs_os_desc_type *
 		*next_type = FFS_OS_DESC_EXT_PROP;
 		break;
 	default:
-		pr_vdebug("unsupported os descriptor type: %d", w_index);
+		dev_vdbg(ffs->dev, "unsupported os descriptor type: %d", w_index);
 		return -EINVAL;
 	}
 
@@ -2267,7 +2267,7 @@  static int __must_check ffs_do_single_os_desc(struct ffs_data *ffs, char *data,
 	while (feature_count--) {
 		ret = entity(ffs, type, h, data, len, priv);
 		if (ret < 0) {
-			pr_debug("bad OS descriptor, type: %d\n", type);
+			dev_dbg(ffs->dev, "bad OS descriptor, type: %d\n", type);
 			return ret;
 		}
 		data += ret;
@@ -2305,7 +2305,7 @@  static int __must_check ffs_do_os_descs(struct ffs_data *ffs, unsigned count,
 
 		ret = __ffs_do_os_desc_header(ffs, &type, desc);
 		if (ret < 0) {
-			pr_debug("entity OS_DESCRIPTOR(%02lx); ret = %d\n",
+			dev_dbg(ffs->dev, "entity OS_DESCRIPTOR(%02lx); ret = %d\n",
 				 num, ret);
 			return ret;
 		}
@@ -2326,7 +2326,7 @@  static int __must_check ffs_do_os_descs(struct ffs_data *ffs, unsigned count,
 		ret = ffs_do_single_os_desc(ffs, data, len, type,
 					    feature_count, entity, priv, desc);
 		if (ret < 0) {
-			pr_debug("%s returns %d\n", __func__, ret);
+			dev_dbg(ffs->dev, "%s returns %d\n", __func__, ret);
 			return ret;
 		}
 
@@ -2360,7 +2360,7 @@  static int __ffs_data_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_type typ
 			 * values.  We fix it here to avoid returning EINVAL
 			 * in response to values we used to accept.
 			 */
-			pr_debug("usb_ext_compat_desc::Reserved1 forced to 1\n");
+			dev_dbg(ffs->dev, "usb_ext_compat_desc::Reserved1 forced to 1\n");
 			d->Reserved1 = 1;
 		}
 		for (i = 0; i < ARRAY_SIZE(d->Reserved2); ++i)
@@ -2383,19 +2383,19 @@  static int __ffs_data_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_type typ
 		type = le32_to_cpu(d->dwPropertyDataType);
 		if (type < USB_EXT_PROP_UNICODE ||
 		    type > USB_EXT_PROP_UNICODE_MULTI) {
-			pr_vdebug("unsupported os descriptor property type: %d",
+			dev_vdbg(ffs->dev, "unsupported os descriptor property type: %d",
 				  type);
 			return -EINVAL;
 		}
 		pnl = le16_to_cpu(d->wPropertyNameLength);
 		if (length < 14 + pnl) {
-			pr_vdebug("invalid os descriptor length: %d pnl:%d (descriptor %d)\n",
+			dev_vdbg(ffs->dev, "invalid os descriptor length: %d pnl:%d (descriptor %d)\n",
 				  length, pnl, type);
 			return -EINVAL;
 		}
 		pdl = le32_to_cpu(*(__le32 *)((u8 *)data + 10 + pnl));
 		if (length != 14 + pnl + pdl) {
-			pr_vdebug("invalid os descriptor length: %d pnl:%d pdl:%d (descriptor %d)\n",
+			dev_vdbg(ffs->dev, "invalid os descriptor length: %d pnl:%d pdl:%d (descriptor %d)\n",
 				  length, pnl, pdl, type);
 			return -EINVAL;
 		}
@@ -2406,7 +2406,7 @@  static int __ffs_data_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_type typ
 	}
 		break;
 	default:
-		pr_vdebug("unknown descriptor: %d\n", type);
+		dev_vdbg(ffs->dev, "unknown descriptor: %d\n", type);
 		return -EINVAL;
 	}
 	return length;
@@ -2732,11 +2732,11 @@  static void __ffs_event_add(struct ffs_data *ffs,
 			if ((*ev == rem_type1 || *ev == rem_type2) == neg)
 				*out++ = *ev;
 			else
-				pr_vdebug("purging event %d\n", *ev);
+				dev_vdbg(ffs->dev, "purging event %d\n", *ev);
 		ffs->ev.count = out - ffs->ev.types;
 	}
 
-	pr_vdebug("adding event %d\n", type);
+	dev_vdbg(ffs->dev, "adding event %d\n", type);
 	ffs->ev.types[ffs->ev.count++] = type;
 	wake_up_locked(&ffs->ev.waitq);
 	if (ffs->ffs_eventfd)
@@ -2805,7 +2805,7 @@  static int __ffs_func_bind_do_descs(struct ffs_data *ffs, enum ffs_entity_type t
 	ffs_ep = func->eps + idx;
 
 	if (ffs_ep->descs[ep_desc_id]) {
-		pr_err("two %sspeed descriptors for EP %d\n",
+		dev_err(ffs->dev, "two %sspeed descriptors for EP %d\n",
 			  speed_names[ep_desc_id],
 			  ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 		return -EINVAL;
@@ -2833,7 +2833,7 @@  static int __ffs_func_bind_do_descs(struct ffs_data *ffs, enum ffs_entity_type t
 		 * endpoint descriptors as if they were full speed.
 		 */
 		wMaxPacketSize = ds->wMaxPacketSize;
-		pr_vdebug("autoconfig\n");
+		dev_vdbg(ffs->dev, "autoconfig\n");
 		ep = usb_ep_autoconfig(func->gadget, ds);
 		if (!ep)
 			return -ENOTSUPP;
@@ -2914,7 +2914,7 @@  static int __ffs_func_bind_do_nums(struct ffs_data *ffs, enum ffs_entity_type ty
 		break;
 	}
 
-	pr_vdebug("%02x -> %02x\n", *valuep, newValue);
+	dev_vdbg(ffs->dev, "%02x -> %02x\n", *valuep, newValue);
 	*valuep = newValue;
 	return 0;
 }
@@ -2992,7 +2992,7 @@  static int __ffs_func_bind_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_typ
 	}
 		break;
 	default:
-		pr_vdebug("unknown descriptor: %d\n", type);
+		dev_vdbg(ffs->dev, "unknown descriptor: %d\n", type);
 	}
 
 	return length;
@@ -3286,11 +3286,11 @@  static int ffs_func_setup(struct usb_function *f,
 	unsigned long flags;
 	int ret;
 
-	pr_vdebug("creq->bRequestType = %02x\n", creq->bRequestType);
-	pr_vdebug("creq->bRequest     = %02x\n", creq->bRequest);
-	pr_vdebug("creq->wValue       = %04x\n", le16_to_cpu(creq->wValue));
-	pr_vdebug("creq->wIndex       = %04x\n", le16_to_cpu(creq->wIndex));
-	pr_vdebug("creq->wLength      = %04x\n", le16_to_cpu(creq->wLength));
+	dev_vdbg(ffs->dev, "creq->bRequestType = %02x\n", creq->bRequestType);
+	dev_vdbg(ffs->dev, "creq->bRequest     = %02x\n", creq->bRequest);
+	dev_vdbg(ffs->dev, "creq->wValue       = %04x\n", le16_to_cpu(creq->wValue));
+	dev_vdbg(ffs->dev, "creq->wIndex       = %04x\n", le16_to_cpu(creq->wIndex));
+	dev_vdbg(ffs->dev, "creq->wLength      = %04x\n", le16_to_cpu(creq->wLength));
 
 	/*
 	 * Most requests directed to interface go through here
@@ -3793,7 +3793,7 @@  static char *ffs_prepare_buffer(struct ffs_data *ffs, const char __user *buf, si
 	if (IS_ERR(data))
 		return data;
 
-	pr_vdebug("Buffer from user space:\n");
+	dev_vdbg(ffs->dev, "Buffer from user space:\n");
 	ffs_dump_mem("", data, len);
 
 	return data;
diff --git a/drivers/usb/gadget/function/u_fs.h b/drivers/usb/gadget/function/u_fs.h
index c5f6167..1b70bd7 100644
--- a/drivers/usb/gadget/function/u_fs.h
+++ b/drivers/usb/gadget/function/u_fs.h
@@ -20,15 +20,9 @@ 
 #include <linux/refcount.h>
 
 #ifdef VERBOSE_DEBUG
-#ifndef pr_vdebug
-#  define pr_vdebug pr_debug
-#endif /* pr_vdebug */
 #  define ffs_dump_mem(prefix, ptr, len) \
 	print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len)
 #else
-#ifndef pr_vdebug
-#  define pr_vdebug(...)                 do { } while (0)
-#endif /* pr_vdebug */
 #  define ffs_dump_mem(prefix, ptr, len) do { } while (0)
 #endif /* VERBOSE_DEBUG */