diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 27e83e55a59014f106f0cb240e610b7e18761fa2..357b149b20d3a1cafdbb1d36aba1a157984166f0 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -192,24 +192,39 @@ static const int pipetypes[4] = {
};
/**
- * usb_urb_ep_type_check - sanity check of endpoint in the given urb
- * @urb: urb to be checked
+ * usb_pipe_type_check - sanity check of a specific pipe for a usb device
+ * @dev: struct usb_device to be checked
+ * @pipe: pipe to check
*
* This performs a light-weight sanity check for the endpoint in the
- * given urb. It returns 0 if the urb contains a valid endpoint, otherwise
- * a negative error code.
+ * given usb device. It returns 0 if the pipe is valid for the specific usb
+ * device, otherwise a negative error code.
*/
-int usb_urb_ep_type_check(const struct urb *urb)
+int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe)
{
const struct usb_host_endpoint *ep;
- ep = usb_pipe_endpoint(urb->dev, urb->pipe);
+ ep = usb_pipe_endpoint(dev, pipe);
if (!ep)
return -EINVAL;
- if (usb_pipetype(urb->pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
+ if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
return -EINVAL;
return 0;
}
+EXPORT_SYMBOL_GPL(usb_pipe_type_check);
+
+/**
+ * usb_urb_ep_type_check - sanity check of endpoint in the given urb
+ * @urb: urb to be checked
+ *
+ * This performs a light-weight sanity check for the endpoint in the
+ * given urb. It returns 0 if the urb contains a valid endpoint, otherwise
+ * a negative error code.
+ */
+int usb_urb_ep_type_check(const struct urb *urb)
+{
+ return usb_pipe_type_check(urb->dev, urb->pipe);
+}
EXPORT_SYMBOL_GPL(usb_urb_ep_type_check);
/**
@@ -474,7 +489,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
*/
/* Check that the pipe's type matches the endpoint's type */
- if (usb_urb_ep_type_check(urb))
+ if (usb_pipe_type_check(urb->dev, urb->pipe))
dev_WARN(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n",
usb_pipetype(urb->pipe), pipetypes[xfertype]);
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 20c555db4621d58425cdd7cb559243af732bc357..0b3963d7ec3800991f7b8d4df235718531f1f41d 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1764,6 +1764,7 @@ static inline int usb_urb_dir_out(struct urb *urb)
return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT;
}
+int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe);
int usb_urb_ep_type_check(const struct urb *urb);
void *usb_alloc_coherent(struct usb_device *dev, size_t size,
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index 4c12cc5b53fda0dd5085cfec00c08cc28d86f53d..cf92d71107731da59b3b9210ab30b5689e654024 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -63,20 +63,6 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype
return NULL;
}
-/* check the validity of pipe and EP types */
-int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe)
-{
- static const int pipetypes[4] = {
- PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
- };
- struct usb_host_endpoint *ep;
-
- ep = usb_pipe_endpoint(dev, pipe);
- if (!ep || usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
- return -EINVAL;
- return 0;
-}
-
/*
* Wrapper for usb_control_msg().
* Allocates a temp buffer to prevent dmaing from/to the stack.
@@ -89,7 +75,7 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
void *buf = NULL;
int timeout;
- if (snd_usb_pipe_sanity_check(dev, pipe))
+ if (usb_pipe_type_check(dev, pipe))
return -EINVAL;
if (size > 0) {
diff --git a/sound/usb/helper.h b/sound/usb/helper.h
index 5e8a18b4e7b96812778dd15da1f94f0c25695777..f5b4c6647e4df2d23401268923782622f797486d 100644
--- a/sound/usb/helper.h
+++ b/sound/usb/helper.h
@@ -7,7 +7,6 @@ unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
-int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe);
int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
__u8 request, __u8 requesttype, __u16 value, __u16 index,
void *data, __u16 size);
diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c
index 0ffff7640892af689ab6827cf4af3312454aa327..9609c6d9655c39a08d91be5a5195ed14a9979b4a 100644
--- a/sound/usb/mixer_scarlett_gen2.c
+++ b/sound/usb/mixer_scarlett_gen2.c
@@ -1978,7 +1978,7 @@ static int scarlett2_mixer_status_create(struct usb_mixer_interface *mixer)
return 0;
}
- if (snd_usb_pipe_sanity_check(dev, pipe))
+ if (usb_pipe_type_check(dev, pipe))
return -EINVAL;
mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 75bbdc6912433796eeea34d9cd5647de59c45576..1b482848e73b63ba87350d37d4cdfe4d065b85a1 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -856,7 +856,7 @@ static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
void *buf;
- if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05)))
+ if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x05)))
return -EINVAL;
buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
if (!buf)
@@ -885,7 +885,7 @@ static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
{
int ret;
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
@@ -994,7 +994,7 @@ static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
/* If the Axe-Fx III has not fully booted, it will timeout when trying
* to enable the audio streaming interface. A more generous timeout is
@@ -1028,7 +1028,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
{
int err, actual_length;
- if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x01)))
+ if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x01)))
return -EINVAL;
err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
&actual_length, 1000);
@@ -1040,7 +1040,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
memset(buf, 0, buf_size);
- if (snd_usb_pipe_sanity_check(dev, usb_rcvintpipe(dev, 0x82)))
+ if (usb_pipe_type_check(dev, usb_rcvintpipe(dev, 0x82)))
return -EINVAL;
err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
&actual_length, 1000);
@@ -1127,7 +1127,7 @@ static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev)
{
int ret;
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,