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[media] dib9000: get rid of Dib*Lock macros 

The patch replaces Dib*Lock macros with direct calls to mutex functions
as soon as they just make the driver code harder to review
(per request of Mauro).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Alexey Khoroshilov 2012-03-19 16:48:34 -03:00 committed by Mauro Carvalho Chehab
parent 943a903459
commit 1eaef48b42
1 changed files with 58 additions and 70 deletions
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128
drivers/media/dvb/frontends/dib9000.c
View File

@ -31,13 +31,6 @@ struct i2c_device {
u8 *i2c_write_buffer;
};
/* lock */
#define DIB_LOCK struct mutex
#define DibAcquireLock(lock) mutex_lock_interruptible(lock)
#define DibReleaseLock(lock) mutex_unlock(lock)
#define DibInitLock(lock) mutex_init(lock)
#define DibFreeLock(lock)
struct dib9000_pid_ctrl {
#define DIB9000_PID_FILTER_CTRL 0
#define DIB9000_PID_FILTER 1
@ -82,11 +75,11 @@ struct dib9000_state {
} fe_mm[18];
u8 memcmd;
DIB_LOCK mbx_if_lock; /* to protect read/write operations */
DIB_LOCK mbx_lock; /* to protect the whole mailbox handling */
struct mutex mbx_if_lock; /* to protect read/write operations */
struct mutex mbx_lock; /* to protect the whole mailbox handling */
DIB_LOCK mem_lock; /* to protect the memory accesses */
DIB_LOCK mem_mbx_lock; /* to protect the memory-based mailbox */
struct mutex mem_lock; /* to protect the memory accesses */
struct mutex mem_mbx_lock; /* to protect the memory-based mailbox */
#define MBX_MAX_WORDS (256 - 200 - 2)
#define DIB9000_MSG_CACHE_SIZE 2
@ -108,7 +101,7 @@ struct dib9000_state {
struct i2c_msg msg[2];
u8 i2c_write_buffer[255];
u8 i2c_read_buffer[255];
DIB_LOCK demod_lock;
struct mutex demod_lock;
u8 get_frontend_internal;
struct dib9000_pid_ctrl pid_ctrl[10];
s8 pid_ctrl_index; /* -1: empty list; -2: do not use the list */
@ -446,13 +439,13 @@ static int dib9000_risc_mem_read(struct dib9000_state *state, u8 cmd, u8 * b, u1
if (!state->platform.risc.fw_is_running)
return -EIO;
if (DibAcquireLock(&state->platform.risc.mem_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
dib9000_risc_mem_setup(state, cmd | 0x80);
dib9000_risc_mem_read_chunks(state, b, len);
DibReleaseLock(&state->platform.risc.mem_lock);
mutex_unlock(&state->platform.risc.mem_lock);
return 0;
}
@ -462,13 +455,13 @@ static int dib9000_risc_mem_write(struct dib9000_state *state, u8 cmd, const u8
if (!state->platform.risc.fw_is_running)
return -EIO;
if (DibAcquireLock(&state->platform.risc.mem_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
dib9000_risc_mem_setup(state, cmd);
dib9000_risc_mem_write_chunks(state, b, m->size);
DibReleaseLock(&state->platform.risc.mem_lock);
mutex_unlock(&state->platform.risc.mem_lock);
return 0;
}
@ -537,7 +530,7 @@ static int dib9000_mbx_send_attr(struct dib9000_state *state, u8 id, u16 * data,
if (!state->platform.risc.fw_is_running)
return -EINVAL;
if (DibAcquireLock(&state->platform.risc.mbx_if_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mbx_if_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -584,7 +577,7 @@ static int dib9000_mbx_send_attr(struct dib9000_state *state, u8 id, u16 * data,
ret = (u8) dib9000_write_word_attr(state, 1043, 1 << 14, attr);
out:
DibReleaseLock(&state->platform.risc.mbx_if_lock);
mutex_unlock(&state->platform.risc.mbx_if_lock);
return ret;
}
@ -602,7 +595,7 @@ static u8 dib9000_mbx_read(struct dib9000_state *state, u16 * data, u8 risc_id,
if (!state->platform.risc.fw_is_running)
return 0;
if (DibAcquireLock(&state->platform.risc.mbx_if_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mbx_if_lock) < 0) {
dprintk("could not get the lock");
return 0;
}
@ -643,7 +636,7 @@ static u8 dib9000_mbx_read(struct dib9000_state *state, u16 * data, u8 risc_id,
/* Update register nb_mes_in_TX */
dib9000_write_word_attr(state, 1028 + mc_base, 1 << 14, attr);
DibReleaseLock(&state->platform.risc.mbx_if_lock);
mutex_unlock(&state->platform.risc.mbx_if_lock);
return size + 1;
}
@ -712,7 +705,7 @@ static int dib9000_mbx_process(struct dib9000_state *state, u16 attr)
if (!state->platform.risc.fw_is_running)
return -1;
if (DibAcquireLock(&state->platform.risc.mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mbx_lock) < 0) {
dprintk("could not get the lock");
return -1;
}
@ -723,7 +716,7 @@ static int dib9000_mbx_process(struct dib9000_state *state, u16 attr)
dib9000_read_word_attr(state, 1229, attr); /* Clear the IRQ */
/* if (tmp) */
/* dprintk( "cleared IRQ: %x", tmp); */
DibReleaseLock(&state->platform.risc.mbx_lock);
mutex_unlock(&state->platform.risc.mbx_lock);
return ret;
}
@ -1192,7 +1185,7 @@ static int dib9000_fw_get_channel(struct dvb_frontend *fe)
struct dibDVBTChannel *ch;
int ret = 0;
if (DibAcquireLock(&state->platform.risc.mem_mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -1322,7 +1315,7 @@ static int dib9000_fw_get_channel(struct dvb_frontend *fe)
}
error:
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
return ret;
}
@ -1677,7 +1670,7 @@ static int dib9000_fw_component_bus_xfer(struct i2c_adapter *i2c_adap, struct i2
p[12] = 0;
}
if (DibAcquireLock(&state->platform.risc.mem_mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
dprintk("could not get the lock");
return 0;
}
@ -1691,7 +1684,7 @@ static int dib9000_fw_component_bus_xfer(struct i2c_adapter *i2c_adap, struct i2
/* do the transaction */
if (dib9000_fw_memmbx_sync(state, FE_SYNC_COMPONENT_ACCESS) < 0) {
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
return 0;
}
@ -1699,7 +1692,7 @@ static int dib9000_fw_component_bus_xfer(struct i2c_adapter *i2c_adap, struct i2
if ((num > 1) && (msg[1].flags & I2C_M_RD))
dib9000_risc_mem_read(state, FE_MM_RW_COMPONENT_ACCESS_BUFFER, msg[1].buf, msg[1].len);
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
return num;
}
@ -1788,7 +1781,7 @@ int dib9000_fw_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff)
return 0;
}
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -1798,7 +1791,7 @@ int dib9000_fw_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff)
dprintk("PID filter enabled %d", onoff);
ret = dib9000_write_word(state, 294 + 1, val);
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
@ -1823,14 +1816,14 @@ int dib9000_fw_pid_filter(struct dvb_frontend *fe, u8 id, u16 pid, u8 onoff)
return 0;
}
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
dprintk("Index %x, PID %d, OnOff %d", id, pid, onoff);
ret = dib9000_write_word(state, 300 + 1 + id,
onoff ? (1 << 13) | pid : 0);
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
EXPORT_SYMBOL(dib9000_fw_pid_filter);
@ -1850,11 +1843,6 @@ static void dib9000_release(struct dvb_frontend *demod)
for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (st->fe[index_frontend] != NULL); index_frontend++)
dvb_frontend_detach(st->fe[index_frontend]);
DibFreeLock(&state->platform.risc.mbx_if_lock);
DibFreeLock(&state->platform.risc.mbx_lock);
DibFreeLock(&state->platform.risc.mem_lock);
DibFreeLock(&state->platform.risc.mem_mbx_lock);
DibFreeLock(&state->demod_lock);
dibx000_exit_i2c_master(&st->i2c_master);
i2c_del_adapter(&st->tuner_adap);
@ -1874,7 +1862,7 @@ static int dib9000_sleep(struct dvb_frontend *fe)
u8 index_frontend;
int ret = 0;
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -1886,7 +1874,7 @@ static int dib9000_sleep(struct dvb_frontend *fe)
ret = dib9000_mbx_send(state, OUT_MSG_FE_SLEEP, NULL, 0);
error:
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
@ -1904,7 +1892,7 @@ static int dib9000_get_frontend(struct dvb_frontend *fe)
int ret = 0;
if (state->get_frontend_internal == 0) {
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -1963,7 +1951,7 @@ static int dib9000_get_frontend(struct dvb_frontend *fe)
return_value:
if (state->get_frontend_internal == 0)
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
@ -2011,7 +1999,7 @@ static int dib9000_set_frontend(struct dvb_frontend *fe)
}
state->pid_ctrl_index = -1; /* postpone the pid filtering cmd */
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return 0;
}
@ -2080,7 +2068,7 @@ static int dib9000_set_frontend(struct dvb_frontend *fe)
/* check the tune result */
if (exit_condition == 1) { /* tune failed */
dprintk("tune failed");
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
/* tune failed; put all the pid filtering cmd to junk */
state->pid_ctrl_index = -1;
return 0;
@ -2136,7 +2124,7 @@ static int dib9000_set_frontend(struct dvb_frontend *fe)
/* turn off the diversity for the last frontend */
dib9000_fw_set_diversity_in(state->fe[index_frontend - 1], 0);
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
if (state->pid_ctrl_index >= 0) {
u8 index_pid_filter_cmd;
u8 pid_ctrl_index = state->pid_ctrl_index;
@ -2174,7 +2162,7 @@ static int dib9000_read_status(struct dvb_frontend *fe, fe_status_t * stat)
u8 index_frontend;
u16 lock = 0, lock_slave = 0;
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -2196,7 +2184,7 @@ static int dib9000_read_status(struct dvb_frontend *fe, fe_status_t * stat)
if ((lock & 0x0008) || (lock_slave & 0x0008))
*stat |= FE_HAS_LOCK;
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return 0;
}
@ -2207,30 +2195,30 @@ static int dib9000_read_ber(struct dvb_frontend *fe, u32 * ber)
u16 *c;
int ret = 0;
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
if (DibAcquireLock(&state->platform.risc.mem_mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
dprintk("could not get the lock");
ret = -EINTR;
goto error;
}
if (dib9000_fw_memmbx_sync(state, FE_SYNC_CHANNEL) < 0) {
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
ret = -EIO;
goto error;
}
dib9000_risc_mem_read(state, FE_MM_R_FE_MONITOR,
state->i2c_read_buffer, 16 * 2);
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
c = (u16 *)state->i2c_read_buffer;
*ber = c[10] << 16 | c[11];
error:
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
@ -2242,7 +2230,7 @@ static int dib9000_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
u16 val;
int ret = 0;
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -2255,18 +2243,18 @@ static int dib9000_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
*strength += val;
}
if (DibAcquireLock(&state->platform.risc.mem_mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
dprintk("could not get the lock");
ret = -EINTR;
goto error;
}
if (dib9000_fw_memmbx_sync(state, FE_SYNC_CHANNEL) < 0) {
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
ret = -EIO;
goto error;
}
dib9000_risc_mem_read(state, FE_MM_R_FE_MONITOR, (u8 *) c, 16 * 2);
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
val = 65535 - c[4];
if (val > 65535 - *strength)
@ -2275,7 +2263,7 @@ static int dib9000_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
*strength += val;
error:
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
@ -2286,16 +2274,16 @@ static u32 dib9000_get_snr(struct dvb_frontend *fe)
u32 n, s, exp;
u16 val;
if (DibAcquireLock(&state->platform.risc.mem_mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
dprintk("could not get the lock");
return 0;
}
if (dib9000_fw_memmbx_sync(state, FE_SYNC_CHANNEL) < 0) {
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
return 0;
}
dib9000_risc_mem_read(state, FE_MM_R_FE_MONITOR, (u8 *) c, 16 * 2);
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
val = c[7];
n = (val >> 4) & 0xff;
@ -2325,7 +2313,7 @@ static int dib9000_read_snr(struct dvb_frontend *fe, u16 * snr)
u8 index_frontend;
u32 snr_master;
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
@ -2339,7 +2327,7 @@ static int dib9000_read_snr(struct dvb_frontend *fe, u16 * snr)
} else
*snr = 0;
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return 0;
}
@ -2350,27 +2338,27 @@ static int dib9000_read_unc_blocks(struct dvb_frontend *fe, u32 * unc)
u16 *c = (u16 *)state->i2c_read_buffer;
int ret = 0;
if (DibAcquireLock(&state->demod_lock) < 0) {
if (mutex_lock_interruptible(&state->demod_lock) < 0) {
dprintk("could not get the lock");
return -EINTR;
}
if (DibAcquireLock(&state->platform.risc.mem_mbx_lock) < 0) {
if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
dprintk("could not get the lock");
ret = -EINTR;
goto error;
}
if (dib9000_fw_memmbx_sync(state, FE_SYNC_CHANNEL) < 0) {
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
ret = -EIO;
goto error;
}
dib9000_risc_mem_read(state, FE_MM_R_FE_MONITOR, (u8 *) c, 16 * 2);
DibReleaseLock(&state->platform.risc.mem_mbx_lock);
mutex_unlock(&state->platform.risc.mem_mbx_lock);
*unc = c[12];
error:
DibReleaseLock(&state->demod_lock);
mutex_unlock(&state->demod_lock);
return ret;
}
@ -2513,11 +2501,11 @@ struct dvb_frontend *dib9000_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, c
st->gpio_val = DIB9000_GPIO_DEFAULT_VALUES;
st->gpio_pwm_pos = DIB9000_GPIO_DEFAULT_PWM_POS;
DibInitLock(&st->platform.risc.mbx_if_lock);
DibInitLock(&st->platform.risc.mbx_lock);
DibInitLock(&st->platform.risc.mem_lock);
DibInitLock(&st->platform.risc.mem_mbx_lock);
DibInitLock(&st->demod_lock);
mutex_init(&st->platform.risc.mbx_if_lock);
mutex_init(&st->platform.risc.mbx_lock);
mutex_init(&st->platform.risc.mem_lock);
mutex_init(&st->platform.risc.mem_mbx_lock);
mutex_init(&st->demod_lock);
st->get_frontend_internal = 0;
st->pid_ctrl_index = -2;