From: tvboxspy <tvboxspy@gmail.com>
To: linux-media@vger.kernel.org
Subject: [PATCH 2/2] [ver 1.90] DM04/QQBOX Reduce USB buffer size.
Date: Mon, 12 Sep 2011 00:30:10 +0100 [thread overview]
Message-ID: <4e6d448b.d0c8e30a.4606.ffff8ac9@mx.google.com> (raw)
Reduced unused buffer size to 64.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
---
drivers/media/dvb/dvb-usb/lmedm04.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/media/dvb/dvb-usb/lmedm04.c b/drivers/media/dvb/dvb-usb/lmedm04.c
index 5fdeed1..b922824 100644
--- a/drivers/media/dvb/dvb-usb/lmedm04.c
+++ b/drivers/media/dvb/dvb-usb/lmedm04.c
@@ -162,7 +162,7 @@ static int lme2510_usb_talk(struct dvb_usb_device *d,
int ret = 0;
if (st->usb_buffer == NULL) {
- st->usb_buffer = kmalloc(512, GFP_KERNEL);
+ st->usb_buffer = kmalloc(64, GFP_KERNEL);
if (st->usb_buffer == NULL) {
info("MEM Error no memory");
return -ENOMEM;
@@ -175,8 +175,8 @@ static int lme2510_usb_talk(struct dvb_usb_device *d,
if (ret < 0)
return -EAGAIN;
- /* the read/write capped at 512 */
- memcpy(buff, wbuf, (wlen > 512) ? 512 : wlen);
+ /* the read/write capped at 64 */
+ memcpy(buff, wbuf, (wlen < 64) ? wlen : 64);
ret |= usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, 0x01));
@@ -186,8 +186,8 @@ static int lme2510_usb_talk(struct dvb_usb_device *d,
ret |= usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x01));
- ret |= lme2510_bulk_read(d->udev, buff, (rlen > 512) ?
- 512 : rlen , 0x01);
+ ret |= lme2510_bulk_read(d->udev, buff, (rlen < 64) ?
+ rlen : 64 , 0x01);
if (rlen > 0)
memcpy(rbuf, buff, rlen);
@@ -580,7 +580,7 @@ static int lme2510_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
{
struct dvb_usb_device *d = i2c_get_adapdata(adap);
struct lme2510_state *st = d->priv;
- static u8 obuf[64], ibuf[512];
+ static u8 obuf[64], ibuf[64];
int i, read, read_o;
u16 len;
u8 gate = st->i2c_gate;
@@ -621,7 +621,7 @@ static int lme2510_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
len = msg[i].len+3;
}
- if (lme2510_msg(d, obuf, len, ibuf, 512) < 0) {
+ if (lme2510_msg(d, obuf, len, ibuf, 64) < 0) {
deb_info(1, "i2c transfer failed.");
return -EAGAIN;
}
@@ -1312,5 +1312,5 @@ module_exit(lme2510_module_exit);
MODULE_AUTHOR("Malcolm Priestley <tvboxspy@gmail.com>");
MODULE_DESCRIPTION("LME2510(C) DVB-S USB2.0");
-MODULE_VERSION("1.89");
+MODULE_VERSION("1.90");
MODULE_LICENSE("GPL");
--
1.7.5.4
reply other threads:[~2011-09-11 23:30 UTC|newest]
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