mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-22 17:33:01 +00:00
ALSA: emu10k1: Get rid of set_fs() usage
Instead of set_fs() hackery, do the straight memcpy() by passing a flag indicating the kernel space operation. Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
3ac8226fc8
commit
d42fe63d58
@ -310,21 +310,6 @@ static const u32 onoff_table[2] = {
|
||||
0x00000000, 0x00000001
|
||||
};
|
||||
|
||||
/*
|
||||
*/
|
||||
|
||||
static inline mm_segment_t snd_enter_user(void)
|
||||
{
|
||||
mm_segment_t fs = get_fs();
|
||||
set_fs(get_ds());
|
||||
return fs;
|
||||
}
|
||||
|
||||
static inline void snd_leave_user(mm_segment_t fs)
|
||||
{
|
||||
set_fs(fs);
|
||||
}
|
||||
|
||||
/*
|
||||
* controls
|
||||
*/
|
||||
@ -538,7 +523,8 @@ unsigned int snd_emu10k1_efx_read(struct snd_emu10k1 *emu, unsigned int pc)
|
||||
}
|
||||
|
||||
static int snd_emu10k1_gpr_poke(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
int gpr;
|
||||
u32 val;
|
||||
@ -546,7 +532,9 @@ static int snd_emu10k1_gpr_poke(struct snd_emu10k1 *emu,
|
||||
for (gpr = 0; gpr < (emu->audigy ? 0x200 : 0x100); gpr++) {
|
||||
if (!test_bit(gpr, icode->gpr_valid))
|
||||
continue;
|
||||
if (get_user(val, &icode->gpr_map[gpr]))
|
||||
if (in_kernel)
|
||||
val = *(u32 *)&icode->gpr_map[gpr];
|
||||
else if (get_user(val, &icode->gpr_map[gpr]))
|
||||
return -EFAULT;
|
||||
snd_emu10k1_ptr_write(emu, emu->gpr_base + gpr, 0, val);
|
||||
}
|
||||
@ -569,7 +557,8 @@ static int snd_emu10k1_gpr_peek(struct snd_emu10k1 *emu,
|
||||
}
|
||||
|
||||
static int snd_emu10k1_tram_poke(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
int tram;
|
||||
u32 addr, val;
|
||||
@ -577,9 +566,14 @@ static int snd_emu10k1_tram_poke(struct snd_emu10k1 *emu,
|
||||
for (tram = 0; tram < (emu->audigy ? 0x100 : 0xa0); tram++) {
|
||||
if (!test_bit(tram, icode->tram_valid))
|
||||
continue;
|
||||
if (get_user(val, &icode->tram_data_map[tram]) ||
|
||||
get_user(addr, &icode->tram_addr_map[tram]))
|
||||
return -EFAULT;
|
||||
if (in_kernel) {
|
||||
val = *(u32 *)&icode->tram_data_map[tram];
|
||||
addr = *(u32 *)&icode->tram_addr_map[tram];
|
||||
} else {
|
||||
if (get_user(val, &icode->tram_data_map[tram]) ||
|
||||
get_user(addr, &icode->tram_addr_map[tram]))
|
||||
return -EFAULT;
|
||||
}
|
||||
snd_emu10k1_ptr_write(emu, TANKMEMDATAREGBASE + tram, 0, val);
|
||||
if (!emu->audigy) {
|
||||
snd_emu10k1_ptr_write(emu, TANKMEMADDRREGBASE + tram, 0, addr);
|
||||
@ -615,16 +609,22 @@ static int snd_emu10k1_tram_peek(struct snd_emu10k1 *emu,
|
||||
}
|
||||
|
||||
static int snd_emu10k1_code_poke(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
u32 pc, lo, hi;
|
||||
|
||||
for (pc = 0; pc < (emu->audigy ? 2*1024 : 2*512); pc += 2) {
|
||||
if (!test_bit(pc / 2, icode->code_valid))
|
||||
continue;
|
||||
if (get_user(lo, &icode->code[pc + 0]) ||
|
||||
get_user(hi, &icode->code[pc + 1]))
|
||||
return -EFAULT;
|
||||
if (in_kernel) {
|
||||
lo = *(u32 *)&icode->code[pc + 0];
|
||||
hi = *(u32 *)&icode->code[pc + 1];
|
||||
} else {
|
||||
if (get_user(lo, &icode->code[pc + 0]) ||
|
||||
get_user(hi, &icode->code[pc + 1]))
|
||||
return -EFAULT;
|
||||
}
|
||||
snd_emu10k1_efx_write(emu, pc + 0, lo);
|
||||
snd_emu10k1_efx_write(emu, pc + 1, hi);
|
||||
}
|
||||
@ -665,14 +665,16 @@ snd_emu10k1_look_for_ctl(struct snd_emu10k1 *emu, struct snd_ctl_elem_id *id)
|
||||
|
||||
#define MAX_TLV_SIZE 256
|
||||
|
||||
static unsigned int *copy_tlv(const unsigned int __user *_tlv)
|
||||
static unsigned int *copy_tlv(const unsigned int __user *_tlv, bool in_kernel)
|
||||
{
|
||||
unsigned int data[2];
|
||||
unsigned int *tlv;
|
||||
|
||||
if (!_tlv)
|
||||
return NULL;
|
||||
if (copy_from_user(data, _tlv, sizeof(data)))
|
||||
if (in_kernel)
|
||||
memcpy(data, (void *)_tlv, sizeof(data));
|
||||
else if (copy_from_user(data, _tlv, sizeof(data)))
|
||||
return NULL;
|
||||
if (data[1] >= MAX_TLV_SIZE)
|
||||
return NULL;
|
||||
@ -680,7 +682,9 @@ static unsigned int *copy_tlv(const unsigned int __user *_tlv)
|
||||
if (!tlv)
|
||||
return NULL;
|
||||
memcpy(tlv, data, sizeof(data));
|
||||
if (copy_from_user(tlv + 2, _tlv + 2, data[1])) {
|
||||
if (in_kernel) {
|
||||
memcpy(tlv + 2, (void *)(_tlv + 2), data[1]);
|
||||
} else if (copy_from_user(tlv + 2, _tlv + 2, data[1])) {
|
||||
kfree(tlv);
|
||||
return NULL;
|
||||
}
|
||||
@ -690,7 +694,7 @@ static unsigned int *copy_tlv(const unsigned int __user *_tlv)
|
||||
static int copy_gctl(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_control_gpr *gctl,
|
||||
struct snd_emu10k1_fx8010_control_gpr __user *_gctl,
|
||||
int idx)
|
||||
int idx, bool in_kernel)
|
||||
{
|
||||
struct snd_emu10k1_fx8010_control_old_gpr __user *octl;
|
||||
|
||||
@ -718,7 +722,8 @@ static int copy_gctl_to_user(struct snd_emu10k1 *emu,
|
||||
}
|
||||
|
||||
static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
unsigned int i;
|
||||
struct snd_ctl_elem_id __user *_id;
|
||||
@ -728,7 +733,9 @@ static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
|
||||
|
||||
for (i = 0, _id = icode->gpr_del_controls;
|
||||
i < icode->gpr_del_control_count; i++, _id++) {
|
||||
if (copy_from_user(&id, _id, sizeof(id)))
|
||||
if (in_kernel)
|
||||
id = *(struct snd_ctl_elem_id *)_id;
|
||||
else if (copy_from_user(&id, _id, sizeof(id)))
|
||||
return -EFAULT;
|
||||
if (snd_emu10k1_look_for_ctl(emu, &id) == NULL)
|
||||
return -ENOENT;
|
||||
@ -738,7 +745,8 @@ static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
|
||||
return -ENOMEM;
|
||||
err = 0;
|
||||
for (i = 0; i < icode->gpr_add_control_count; i++) {
|
||||
if (copy_gctl(emu, gctl, icode->gpr_add_controls, i)) {
|
||||
if (copy_gctl(emu, gctl, icode->gpr_add_controls, i,
|
||||
in_kernel)) {
|
||||
err = -EFAULT;
|
||||
goto __error;
|
||||
}
|
||||
@ -759,7 +767,8 @@ static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
|
||||
}
|
||||
for (i = 0; i < icode->gpr_list_control_count; i++) {
|
||||
/* FIXME: we need to check the WRITE access */
|
||||
if (copy_gctl(emu, gctl, icode->gpr_list_controls, i)) {
|
||||
if (copy_gctl(emu, gctl, icode->gpr_list_controls, i,
|
||||
in_kernel)) {
|
||||
err = -EFAULT;
|
||||
goto __error;
|
||||
}
|
||||
@ -781,7 +790,8 @@ static void snd_emu10k1_ctl_private_free(struct snd_kcontrol *kctl)
|
||||
}
|
||||
|
||||
static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
unsigned int i, j;
|
||||
struct snd_emu10k1_fx8010_control_gpr *gctl;
|
||||
@ -800,7 +810,8 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
|
||||
}
|
||||
|
||||
for (i = 0; i < icode->gpr_add_control_count; i++) {
|
||||
if (copy_gctl(emu, gctl, icode->gpr_add_controls, i)) {
|
||||
if (copy_gctl(emu, gctl, icode->gpr_add_controls, i,
|
||||
in_kernel)) {
|
||||
err = -EFAULT;
|
||||
goto __error;
|
||||
}
|
||||
@ -821,7 +832,7 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
|
||||
knew.device = gctl->id.device;
|
||||
knew.subdevice = gctl->id.subdevice;
|
||||
knew.info = snd_emu10k1_gpr_ctl_info;
|
||||
knew.tlv.p = copy_tlv(gctl->tlv);
|
||||
knew.tlv.p = copy_tlv(gctl->tlv, in_kernel);
|
||||
if (knew.tlv.p)
|
||||
knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
|
||||
SNDRV_CTL_ELEM_ACCESS_TLV_READ;
|
||||
@ -873,7 +884,8 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
|
||||
}
|
||||
|
||||
static int snd_emu10k1_del_controls(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
unsigned int i;
|
||||
struct snd_ctl_elem_id id;
|
||||
@ -883,7 +895,9 @@ static int snd_emu10k1_del_controls(struct snd_emu10k1 *emu,
|
||||
|
||||
for (i = 0, _id = icode->gpr_del_controls;
|
||||
i < icode->gpr_del_control_count; i++, _id++) {
|
||||
if (copy_from_user(&id, _id, sizeof(id)))
|
||||
if (in_kernel)
|
||||
id = *(struct snd_ctl_elem_id *)_id;
|
||||
else if (copy_from_user(&id, _id, sizeof(id)))
|
||||
return -EFAULT;
|
||||
down_write(&card->controls_rwsem);
|
||||
ctl = snd_emu10k1_look_for_ctl(emu, &id);
|
||||
@ -941,12 +955,14 @@ static int snd_emu10k1_list_controls(struct snd_emu10k1 *emu,
|
||||
}
|
||||
|
||||
static int snd_emu10k1_icode_poke(struct snd_emu10k1 *emu,
|
||||
struct snd_emu10k1_fx8010_code *icode)
|
||||
struct snd_emu10k1_fx8010_code *icode,
|
||||
bool in_kernel)
|
||||
{
|
||||
int err = 0;
|
||||
|
||||
mutex_lock(&emu->fx8010.lock);
|
||||
if ((err = snd_emu10k1_verify_controls(emu, icode)) < 0)
|
||||
err = snd_emu10k1_verify_controls(emu, icode, in_kernel);
|
||||
if (err < 0)
|
||||
goto __error;
|
||||
strlcpy(emu->fx8010.name, icode->name, sizeof(emu->fx8010.name));
|
||||
/* stop FX processor - this may be dangerous, but it's better to miss
|
||||
@ -956,11 +972,20 @@ static int snd_emu10k1_icode_poke(struct snd_emu10k1 *emu,
|
||||
else
|
||||
snd_emu10k1_ptr_write(emu, DBG, 0, emu->fx8010.dbg | EMU10K1_DBG_SINGLE_STEP);
|
||||
/* ok, do the main job */
|
||||
if ((err = snd_emu10k1_del_controls(emu, icode)) < 0 ||
|
||||
(err = snd_emu10k1_gpr_poke(emu, icode)) < 0 ||
|
||||
(err = snd_emu10k1_tram_poke(emu, icode)) < 0 ||
|
||||
(err = snd_emu10k1_code_poke(emu, icode)) < 0 ||
|
||||
(err = snd_emu10k1_add_controls(emu, icode)) < 0)
|
||||
err = snd_emu10k1_del_controls(emu, icode, in_kernel);
|
||||
if (err < 0)
|
||||
goto __error;
|
||||
err = snd_emu10k1_gpr_poke(emu, icode, in_kernel);
|
||||
if (err < 0)
|
||||
goto __error;
|
||||
err = snd_emu10k1_tram_poke(emu, icode, in_kernel);
|
||||
if (err < 0)
|
||||
goto __error;
|
||||
err = snd_emu10k1_code_poke(emu, icode, in_kernel);
|
||||
if (err < 0)
|
||||
goto __error;
|
||||
err = snd_emu10k1_add_controls(emu, icode, in_kernel);
|
||||
if (err < 0)
|
||||
goto __error;
|
||||
/* start FX processor when the DSP code is updated */
|
||||
if (emu->audigy)
|
||||
@ -1179,7 +1204,6 @@ static int _snd_emu10k1_audigy_init_efx(struct snd_emu10k1 *emu)
|
||||
struct snd_emu10k1_fx8010_code *icode = NULL;
|
||||
struct snd_emu10k1_fx8010_control_gpr *controls = NULL, *ctl;
|
||||
u32 *gpr_map;
|
||||
mm_segment_t seg;
|
||||
|
||||
err = -ENOMEM;
|
||||
icode = kzalloc(sizeof(*icode), GFP_KERNEL);
|
||||
@ -1739,13 +1763,11 @@ A_OP(icode, &ptr, iMAC0, A_GPR(var), A_GPR(var), A_GPR(vol), A_EXTIN(input))
|
||||
while (ptr < 0x400)
|
||||
A_OP(icode, &ptr, 0x0f, 0xc0, 0xc0, 0xcf, 0xc0);
|
||||
|
||||
seg = snd_enter_user();
|
||||
icode->gpr_add_control_count = nctl;
|
||||
icode->gpr_add_controls = (struct snd_emu10k1_fx8010_control_gpr __user *)controls;
|
||||
emu->support_tlv = 1; /* support TLV */
|
||||
err = snd_emu10k1_icode_poke(emu, icode);
|
||||
err = snd_emu10k1_icode_poke(emu, icode, true);
|
||||
emu->support_tlv = 0; /* clear again */
|
||||
snd_leave_user(seg);
|
||||
|
||||
__err:
|
||||
kfree(controls);
|
||||
@ -1817,7 +1839,6 @@ static int _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
|
||||
struct snd_emu10k1_fx8010_pcm_rec *ipcm = NULL;
|
||||
struct snd_emu10k1_fx8010_control_gpr *controls = NULL, *ctl;
|
||||
u32 *gpr_map;
|
||||
mm_segment_t seg;
|
||||
|
||||
err = -ENOMEM;
|
||||
icode = kzalloc(sizeof(*icode), GFP_KERNEL);
|
||||
@ -2368,13 +2389,11 @@ static int _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
|
||||
|
||||
if ((err = snd_emu10k1_fx8010_tram_setup(emu, ipcm->buffer_size)) < 0)
|
||||
goto __err;
|
||||
seg = snd_enter_user();
|
||||
icode->gpr_add_control_count = i;
|
||||
icode->gpr_add_controls = (struct snd_emu10k1_fx8010_control_gpr __user *)controls;
|
||||
emu->support_tlv = 1; /* support TLV */
|
||||
err = snd_emu10k1_icode_poke(emu, icode);
|
||||
err = snd_emu10k1_icode_poke(emu, icode, true);
|
||||
emu->support_tlv = 0; /* clear again */
|
||||
snd_leave_user(seg);
|
||||
if (err >= 0)
|
||||
err = snd_emu10k1_ipcm_poke(emu, ipcm);
|
||||
__err:
|
||||
@ -2537,7 +2556,7 @@ static int snd_emu10k1_fx8010_ioctl(struct snd_hwdep * hw, struct file *file, un
|
||||
icode = memdup_user(argp, sizeof(*icode));
|
||||
if (IS_ERR(icode))
|
||||
return PTR_ERR(icode);
|
||||
res = snd_emu10k1_icode_poke(emu, icode);
|
||||
res = snd_emu10k1_icode_poke(emu, icode, false);
|
||||
kfree(icode);
|
||||
return res;
|
||||
case SNDRV_EMU10K1_IOCTL_CODE_PEEK:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user