1 files changed, 42 insertions, 1 deletions
diff --git a/lib/libusb/libusb.3 b/lib/libusb/libusb.3
index a9a99f307a86..9dc752f0fd7b 100644
--- a/lib/libusb/libusb.3
+++ b/lib/libusb/libusb.3
@@ -22,7 +22,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 12, 2025
+.Dd July 9, 2025
 .Dt LIBUSB 3
 .Os
 .Sh NAME
@@ -106,6 +106,19 @@ Get the ASCII representation of the error given by the
 argument.
 This function does not return NULL.
 .Pp
+.Ft int
+.Fn libusb_setlocale "const char *locale"
+Set locale for the error message when using
+.Fn libusb_strerror
+to
+.Ft locale .
+Note other
+.Nm
+implementations only support the first two bytes, that means
+.Ql en-US
+is equivalent to
+.Ql en-CA .
+.Pp
 .Ft const char *
 .Fn libusb_error_name "int code"
 Get the ASCII representation of the error enum given by the
@@ -353,6 +366,23 @@ argument is non-zero the feature is enabled.
 Else disabled.
 Returns 0 on success and a LIBUSB_ERROR code on
 failure.
+.Pp
+.Ft unsigned char *
+.Fn libusb_dev_mem_alloc "libusb_device_handle *devh"
+This function attempts to allocate a DMA memory block from the given
+.Fa devh
+so that we can enjoy the zero-copy transfer from kernel.
+This function is provided for compatibility and is currently unimplemented and always returns NULL.
+.Pp
+.Ft int
+.Fn libusb_dev_mem_free "libusb_device_handle *devh" "unsigned char *buffer" "size_t size"
+This function frees the DMA memory in
+.Fa devh
+from the given
+.Fa buffer
+with
+.Fa size .
+This function is unimplemented and always returns LIBUSB_ERROR_NOT_SUPPORTED.
 .Sh USB DESCRIPTORS
 .Ft int
 .Fn libusb_get_device_descriptor "libusb_device *dev" "libusb_device_descriptor *desc"
@@ -762,6 +792,17 @@ argument can be either of LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED or LIBUSB_HOTPLUG_
 .Ft void
 .Fn libusb_hotplug_deregister_callback "libusb_context *ctx" "libusb_hotplug_callback_handle handle"
 This function unregisters a hotplug filter.
+.Pp
+.Ft void
+.Fn libusb_free_pollfds "const struct libusb_pollfd **pollfds"
+This function releases the memory storage in
+.Fa pollfds ,
+and is safe to call when the argument is NULL.
+.Pp void *
+.Fn libusb_hotplug_get_user_data "struct libusb_context *ctx" "libusb_hotplug_callback_handle callback_handle"
+This function returns the user data from the opaque
+.Fa callback_handle ,
+or returns NULL if no matching handle is found.
 .Sh LIBUSB VERSION 0.1 COMPATIBILITY
 The library is also compliant with LibUSB version 0.1.12.
 .Pp