sound/oss/sound_firmware.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <linux/fs.h>
   3
   4 /**
   5  *      mod_firmware_load - load sound driver firmware
   6  *      @fn: filename
   7  *      @fp: return for the buffer.
   8  *
   9  *      Load the firmware for a sound module (up to 128K) into a buffer.
  10  *      The buffer is returned in *fp. It is allocated with vmalloc so is
  11  *      virtually linear and not DMAable. The caller should free it with
  12  *      vfree when finished.
  13  *
  14  *      The length of the buffer is returned on a successful load, the
  15  *      value zero on a failure.
  16  *
  17  *      Caution: This API is not recommended. Firmware should be loaded via
  18  *      request_firmware.
  19  */
  20 static inline int mod_firmware_load(const char *fn, char **fp)
  21 {
  22         loff_t size;
  23         int err;
  24
  25         err = kernel_read_file_from_path(fn, (void **)fp, &size,
  26                                          131072, READING_FIRMWARE);
  27         if (err < 0)
  28                 return 0;
  29         return size;
  30 }