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V4L/DVB (8532): mxl5007t: remove excessive locks

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The use of mutex locking is overly paranoid in this driver.
The only locks we need are around the manipulation of the
register arrays. The other locks are not needed - remove them.

Thanks to Steven Toth for pointing this out.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-07-26 15:43:17 -03:00 committed by Mauro Carvalho Chehab
parent c39c1fd293
commit 74b9ef2116
1 changed files with 0 additions and 16 deletions
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16
drivers/media/common/tuners/mxl5007t.c
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@ -663,8 +663,6 @@ static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status)
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
mutex_lock(&state->lock);
ret = mxl5007t_synth_lock_status(state, &rf_locked, &ref_locked);
if (mxl_fail(ret))
goto fail;
@ -676,8 +674,6 @@ static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status)
goto fail;
mxl_debug("rf input power: %d", rf_input_level);
fail:
mutex_unlock(&state->lock);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
@ -839,8 +835,6 @@ static int mxl5007t_init(struct dvb_frontend *fe)
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
mutex_lock(&state->lock);
ret = mxl5007t_read_reg(state, 0x05, &d);
if (mxl_fail(ret))
goto fail;
@ -848,8 +842,6 @@ static int mxl5007t_init(struct dvb_frontend *fe)
ret = mxl5007t_write_reg(state, 0x05, d | 0x01);
mxl_fail(ret);
fail:
mutex_unlock(&state->lock);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
@ -865,8 +857,6 @@ static int mxl5007t_sleep(struct dvb_frontend *fe)
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
mutex_lock(&state->lock);
ret = mxl5007t_read_reg(state, 0x05, &d);
if (mxl_fail(ret))
goto fail;
@ -874,8 +864,6 @@ static int mxl5007t_sleep(struct dvb_frontend *fe)
ret = mxl5007t_write_reg(state, 0x05, d & ~0x01);
mxl_fail(ret);
fail:
mutex_unlock(&state->lock);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
@ -1001,12 +989,8 @@ struct dvb_frontend *mxl5007t_attach(struct dvb_frontend *fe,
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
mutex_lock(&state->lock);
ret = mxl5007t_get_chip_id(state);
mutex_unlock(&state->lock);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);