From: Manu Abraham <abraham.manu@gmail.com>
Date: Fri, 4 Dec 2009 12:02:00 +0000 (-0300)
Subject: V4L/DVB (13800): [Mantis] I2C optimization. Required delay is much lesser than 1mS.
X-Git-Tag: MMI-PSA29.97-13-9~25119^2~16
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=281859179f731b28aae78d13b2e8720219492000;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

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>
---

diff --git a/drivers/media/dvb/mantis/mantis_i2c.c b/drivers/media/dvb/mantis/mantis_i2c.c
index 758f32a63b2f..9d2b51d2e4b6 100644
--- a/drivers/media/dvb/mantis/mantis_i2c.c
+++ b/drivers/media/dvb/mantis/mantis_i2c.c
@@ -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;