From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-fx0-f46.google.com ([209.85.161.46]:38207 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751221Ab1BAWlC (ORCPT ); Tue, 1 Feb 2011 17:41:02 -0500 Received: by mail-fx0-f46.google.com with SMTP id 20so7348272fxm.19 for ; Tue, 01 Feb 2011 14:41:01 -0800 (PST) Subject: [PATCH 3/9 v2] ds3000: loading firmware in bigger chunks To: mchehab@infradead.org, linux-media@vger.kernel.org From: "Igor M. Liplianin" Date: Wed, 2 Feb 2011 00:40:25 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201102020040.25705.liplianin@me.by> List-ID: Sender: 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 --- drivers/media/dvb/frontends/ds3000.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/media/dvb/frontends/ds3000.c b/drivers/media/dvb/frontends/ds3000.c index b20005c..02ba759 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); -- 1.7.1