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sparc64: skip handshake for LDC channels in RAW mode 

LDC channels in RAW mode does not provide any session management. No
handshake protocol is defined for LDC channels in RAW mode. It's
therefore skipped.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Jag Raman 2017-06-23 14:58:31 -04:00 committed by David S. Miller
parent ac6bb02554
commit 01b7a47138
2 changed files with 15 additions and 1 deletions
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10
arch/sparc/kernel/ldc.c
View File

@ -1347,6 +1347,14 @@ int ldc_bind(struct ldc_channel *lp)
lp->hs_state = LDC_HS_OPEN;
ldc_set_state(lp, LDC_STATE_BOUND);
if (lp->cfg.mode == LDC_MODE_RAW) {
/*
* There is no handshake in RAW mode, so handshake
* is completed.
*/
lp->hs_state = LDC_HS_COMPLETE;
}
spin_unlock_irqrestore(&lp->lock, flags);
return 0;
@ -1460,11 +1468,13 @@ void ldc_set_state(struct ldc_channel *lp, u8 state)
lp->state = state;
}
EXPORT_SYMBOL(ldc_set_state);
int ldc_mode(struct ldc_channel *lp)
{
return lp->cfg.mode;
}
EXPORT_SYMBOL(ldc_mode);
int ldc_rx_reset(struct ldc_channel *lp)
{

6
arch/sparc/kernel/viohs.c
View File

@ -776,7 +776,11 @@ void vio_port_up(struct vio_driver_state *vio)
}
if (!err) {
err = ldc_connect(vio->lp);
if (ldc_mode(vio->lp) == LDC_MODE_RAW)
ldc_set_state(vio->lp, LDC_STATE_CONNECTED);
else
err = ldc_connect(vio->lp);
if (err)
printk(KERN_WARNING "%s: Port %lu connect failed, "
"err=%d\n",