From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- sound/core/hwdep_compat.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 sound/core/hwdep_compat.c (limited to 'sound/core/hwdep_compat.c') diff --git a/sound/core/hwdep_compat.c b/sound/core/hwdep_compat.c new file mode 100644 index 0000000000..a0b76706c0 --- /dev/null +++ b/sound/core/hwdep_compat.c @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 32bit -> 64bit ioctl wrapper for hwdep API + * Copyright (c) by Takashi Iwai + */ + +/* This file is included from hwdep.c */ + +#include + +struct snd_hwdep_dsp_image32 { + u32 index; + unsigned char name[64]; + u32 image; /* pointer */ + u32 length; + u32 driver_data; +} /* don't set packed attribute here */; + +static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw, + struct snd_hwdep_dsp_image32 __user *src) +{ + struct snd_hwdep_dsp_image info = {}; + compat_caddr_t ptr; + + if (copy_from_user(&info, src, 4 + 64) || + get_user(ptr, &src->image) || + get_user(info.length, &src->length) || + get_user(info.driver_data, &src->driver_data)) + return -EFAULT; + info.image = compat_ptr(ptr); + + return snd_hwdep_dsp_load(hw, &info); +} + +enum { + SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32) +}; + +static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, + unsigned long arg) +{ + struct snd_hwdep *hw = file->private_data; + void __user *argp = compat_ptr(arg); + switch (cmd) { + case SNDRV_HWDEP_IOCTL_PVERSION: + case SNDRV_HWDEP_IOCTL_INFO: + case SNDRV_HWDEP_IOCTL_DSP_STATUS: + return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); + case SNDRV_HWDEP_IOCTL_DSP_LOAD32: + return snd_hwdep_dsp_load_compat(hw, argp); + } + if (hw->ops.ioctl_compat) + return hw->ops.ioctl_compat(hw, file, cmd, arg); + return -ENOIOCTLCMD; +} -- cgit v1.2.3