V4L/DVB (9457): Optimization, Fix a Bug

* cut down some I/O operations by disabling "disable gate"
* budget_av was left with the gate open, thereby more susceptible
to RF interference due to I/O operations

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 17 deletions

diff --git a/drivers/media/dvb/frontends/stb6100.c b/drivers/media/dvb/frontends/stb6100.c
index c8fdc1e99df1..f404a4d0fb17 100644
--- a/drivers/media/dvb/frontends/stb6100.c
+++ b/drivers/media/dvb/frontends/stb6100.c
@@ -134,16 +134,7 @@ static int stb6100_read_regs(struct stb6100_state *state, u8 regs[])
                 .len    = STB6100_NUMREGS
         };
 
-        if (state->frontend->ops.i2c_gate_ctrl)
-                if ((rc = state->frontend->ops.i2c_gate_ctrl(state->frontend, 1)) < 0)
-                        return rc;
-
         rc = i2c_transfer(state->i2c, &msg, 1);
-        if (state->frontend->ops.i2c_gate_ctrl) {
-                int rc2;
-                if ((rc2 = state->frontend->ops.i2c_gate_ctrl(state->frontend, 0)) < 0)
-                        return rc2;
-        }
         if (unlikely(rc != 1)) {
                 dprintk(verbose, FE_ERROR, 1, "Read (0x%x) err, rc=[%d]",
                         state->config->tuner_address, rc);
@@ -200,15 +191,7 @@ static int stb6100_write_reg_range(struct stb6100_state *state, u8 buf[], int st
                 for (i = 0; i < len; i++)
                         dprintk(verbose, FE_DEBUG, 1, "        %s: 0x%02x", stb6100_regnames[start + i], buf[i]);
         }
-        if (state->frontend->ops.i2c_gate_ctrl)
-                if ((rc = state->frontend->ops.i2c_gate_ctrl(state->frontend, 1)) < 0)
-                        return rc;
         rc = i2c_transfer(state->i2c, &msg, 1);
-        if (state->frontend->ops.i2c_gate_ctrl) {
-                int rc2;
-                if ((rc2 = state->frontend->ops.i2c_gate_ctrl(state->frontend, 0)) < 0)
-                        return rc2;
-        }
         if (unlikely(rc != 1)) {
                 dprintk(verbose, FE_ERROR, 1, "(0x%x) write err [%d:%d], rc=[%d]",
                         (unsigned int)state->config->tuner_address, start, len, rc);