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V4L/DVB (13800): [Mantis] I2C optimization. Required delay is much lesser than 1mS. 

Do not wait, keep looping instead.

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manu Abraham 2009-12-04 09:02:00 -03:00 committed by Mauro Carvalho Chehab
parent 68fe255cd1
commit 281859179f
1 changed files with 0 additions and 5 deletions
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5
drivers/media/dvb/mantis/mantis_i2c.c
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@ -58,7 +58,6 @@ static int mantis_i2c_read(struct mantis_pci *mantis, const struct i2c_msg *msg)
/* wait for xfer completion */
for (trials = 0; trials < TRIALS; trials++) {
msleep(1);
stat = mmread(MANTIS_INT_STAT);
if (stat & MANTIS_INT_I2CDONE)
break;
@ -71,7 +70,6 @@ static int mantis_i2c_read(struct mantis_pci *mantis, const struct i2c_msg *msg)
stat = mmread(MANTIS_INT_STAT);
if (stat & MANTIS_INT_I2CRACK)
break;
msleep(1);
}
dprintk(MANTIS_TMG, 0, "I2CRACK: trials=%d\n", trials);
@ -108,7 +106,6 @@ static int mantis_i2c_write(struct mantis_pci *mantis, const struct i2c_msg *msg
/* wait for xfer completion */
for (trials = 0; trials < TRIALS; trials++) {
msleep(1);
stat = mmread(MANTIS_INT_STAT);
if (stat & MANTIS_INT_I2CDONE)
break;
@ -121,7 +118,6 @@ static int mantis_i2c_write(struct mantis_pci *mantis, const struct i2c_msg *msg
stat = mmread(MANTIS_INT_STAT);
if (stat & MANTIS_INT_I2CRACK)
break;
msleep(1);
}
dprintk(MANTIS_TMG, 0, "I2CRACK: trials=%d\n", trials);
@ -164,7 +160,6 @@ static int mantis_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, in
mmwrite(txd, MANTIS_I2CDATA_CTL);
/* wait for xfer completion */
for (trials = 0; trials < TRIALS; trials++) {
msleep(1);
stat = mmread(MANTIS_INT_STAT);
if (stat & MANTIS_INT_I2CDONE)
break;