[PATCH 5/8] adv7175: Drop unused register cache
From: Jean Delvare
Date: Mon Mar 13 2006 - 15:30:19 EST
Drop the adv7175 register cache, as it is only written to and never
read back from. This saves 128 bytes of memory and slightly speeds up
the register writes.
Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
---
drivers/media/video/adv7175.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
--- linux-2.6.16-rc5.orig/drivers/media/video/adv7175.c 2006-03-01 21:10:12.000000000 +0100
+++ linux-2.6.16-rc5/drivers/media/video/adv7175.c 2006-03-01 21:10:14.000000000 +0100
@@ -67,8 +67,6 @@
/* ----------------------------------------------------------------------- */
struct adv7175 {
- unsigned char reg[128];
-
int norm;
int input;
int enable;
@@ -94,9 +92,6 @@
u8 reg,
u8 value)
{
- struct adv7175 *encoder = i2c_get_clientdata(client);
-
- encoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
@@ -119,7 +114,6 @@
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
/* do raw I2C, not smbus compatible */
- struct adv7175 *encoder = i2c_get_clientdata(client);
struct i2c_msg msg;
u8 block_data[32];
@@ -130,8 +124,8 @@
msg.len = 0;
block_data[msg.len++] = reg = data[0];
do {
- block_data[msg.len++] =
- encoder->reg[reg++] = data[1];
+ block_data[msg.len++] = data[1];
+ reg++;
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg &&
--
Jean Delvare
-
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