From: Igor M. Liplianin <liplianin@me.by>
Date: Tue, 1 Feb 2011 22:40:25 +0000 (-0300)
Subject: [media] ds3000: loading firmware in bigger chunks
X-Git-Tag: v2.6.39-rc1~86^2~260
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=caa687c805332a384afd292e2b20e25a6282ed66;p=karo-tx-linux.git

[media] ds3000: loading firmware in bigger chunks

Decrease firmware loading time. Before it is ~4000 i2c calls,
now it is ~256 i2c calls to load ds3000 firmware.

Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/dvb/frontends/ds3000.c b/drivers/media/dvb/frontends/ds3000.c
index 41af75adc575..b2f0f4e8e512 100644
--- a/drivers/media/dvb/frontends/ds3000.c
+++ b/drivers/media/dvb/frontends/ds3000.c
@@ -305,7 +305,7 @@ static int ds3000_writeFW(struct ds3000_state *state, int reg,
 	struct i2c_msg msg;
 	u8 *buf;
 
-	buf = kmalloc(3, GFP_KERNEL);
+	buf = kmalloc(33, GFP_KERNEL);
 	if (buf == NULL) {
 		printk(KERN_ERR "Unable to kmalloc\n");
 		ret = -ENOMEM;
@@ -317,10 +317,10 @@ static int ds3000_writeFW(struct ds3000_state *state, int reg,
 	msg.addr = state->config->demod_address;
 	msg.flags = 0;
 	msg.buf = buf;
-	msg.len = 3;
+	msg.len = 33;
 
-	for (i = 0; i < len; i += 2) {
-		memcpy(buf + 1, data + i, 2);
+	for (i = 0; i < len; i += 32) {
+		memcpy(buf + 1, data + i, 32);
 
 		dprintk("%s: write reg 0x%02x, len = %d\n", __func__, reg, len);