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| author | Karsten Keil <kkeil@linux-pingi.de> | 2012-05-16 01:51:08 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-16 21:24:36 +0200 |
| commit | c27b46e7f1cbf3be95a4cf5840c76a7b7d54b26f (patch) | |
| tree | db406c5ceb174b3b41a0085929fe85c5e6951bb6 /drivers/isdn/hardware/mISDN/hfcpci.c | |
| parent | mISDN: Implement MISDN_CTRL_FILL_EMPTY for more drivers (diff) | |
| download | linux-c27b46e7f1cbf3be95a4cf5840c76a7b7d54b26f.tar.xz linux-c27b46e7f1cbf3be95a4cf5840c76a7b7d54b26f.zip | |
mISDN: Implement MISDN_CTRL_RX_OFF for more drivers
MISDN_CTRL_RX_OFF is a meachanism to discard RX data in the driver if
the data is not needed by the application. It can be used when playing
mesages, but not recording or with unidirectional protocols.
Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/hardware/mISDN/hfcpci.c')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcpci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c index 1bd8bc7eb5c7..81363ffa5357 100644 --- a/drivers/isdn/hardware/mISDN/hfcpci.c +++ b/drivers/isdn/hardware/mISDN/hfcpci.c @@ -572,6 +572,11 @@ hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *rxbz, fcnt_tx = B_FIFO_SIZE - fcnt_tx; /* remaining bytes to send (bytes in tx-fifo) */ + if (test_bit(FLG_RX_OFF, &bch->Flags)) { + bch->dropcnt += fcnt_rx; + *z2r = cpu_to_le16(new_z2); + return; + } maxlen = bchannel_get_rxbuf(bch, fcnt_rx); if (maxlen < 0) { pr_warning("B%d: No bufferspace for %d bytes\n", |