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platform_kernel-5.15
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[media] [2/2,ver,1.90] DM04/QQBOX Reduce USB buffer size 

Reduced unused buffer size to 64.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
tvboxspy 2011-09-11 19:30:10 -03:00 committed by Mauro Carvalho Chehab
parent 95c21c4158
commit 810fda9bcc
1 changed files with 8 additions and 8 deletions
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16
drivers/media/dvb/dvb-usb/lmedm04.c
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@ -162,7 +162,7 @@ static int lme2510_usb_talk(struct dvb_usb_device *d,
int ret = 0; int ret = 0;
if (st->usb_buffer == NULL) { if (st->usb_buffer == NULL) {
st->usb_buffer = kmalloc(512, GFP_KERNEL); st->usb_buffer = kmalloc(64, GFP_KERNEL);
if (st->usb_buffer == NULL) { if (st->usb_buffer == NULL) {
info("MEM Error no memory"); info("MEM Error no memory");
return -ENOMEM; return -ENOMEM;
@ -175,8 +175,8 @@ static int lme2510_usb_talk(struct dvb_usb_device *d,
if (ret < 0) if (ret < 0)
return -EAGAIN; return -EAGAIN;
/* the read/write capped at 512 */ /* the read/write capped at 64 */
memcpy(buff, wbuf, (wlen > 512) ? 512 : wlen); memcpy(buff, wbuf, (wlen < 64) ? wlen : 64);
ret |= usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, 0x01)); 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 |= usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x01));
ret |= lme2510_bulk_read(d->udev, buff, (rlen > 512) ? ret |= lme2510_bulk_read(d->udev, buff, (rlen < 64) ?
512 : rlen , 0x01); rlen : 64 , 0x01);
if (rlen > 0) if (rlen > 0)
memcpy(rbuf, buff, rlen); 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 dvb_usb_device *d = i2c_get_adapdata(adap);
struct lme2510_state *st = d->priv; struct lme2510_state *st = d->priv;
static u8 obuf[64], ibuf[512]; static u8 obuf[64], ibuf[64];
int i, read, read_o; int i, read, read_o;
u16 len; u16 len;
u8 gate = st->i2c_gate; 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; 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."); deb_info(1, "i2c transfer failed.");
return -EAGAIN; return -EAGAIN;
} }
@ -1312,5 +1312,5 @@ module_exit(lme2510_module_exit);
MODULE_AUTHOR("Malcolm Priestley <tvboxspy@gmail.com>"); MODULE_AUTHOR("Malcolm Priestley <tvboxspy@gmail.com>");
MODULE_DESCRIPTION("LME2510(C) DVB-S USB2.0"); MODULE_DESCRIPTION("LME2510(C) DVB-S USB2.0");
MODULE_VERSION("1.89"); MODULE_VERSION("1.90");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");