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Commit 8a2950cc authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC64]: Handle LDC resets properly in domain-services driver. 



Reset the handshake and per-capability state so that when the
link comes back up we'll renegotiate the DS version and then
reregister all of the services.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6160f635

arch/sparc64/kernel/ds.c

+19 −0
Original line number Diff line number Diff line
@@ -1013,6 +1013,19 @@ static void ds_up(struct ds_info *dp) 
		dp->hs_state = DS_HS_START;

}



static void ds_reset(struct ds_info *dp)

{

	int i;



	dp->hs_state = 0;



	for (i = 0; i < ARRAY_SIZE(ds_states); i++) {

		struct ds_cap_state *cp = &ds_states[i];



		cp->state = CAP_STATE_UNKNOWN;

	}

}



static void ds_event(void *arg, int event)

{

	struct ds_info *dp = arg;
@@ -1028,6 +1041,12 @@ static void ds_event(void *arg, int event) 
		return;

	}



	if (event == LDC_EVENT_RESET) {

		ds_reset(dp);

		spin_unlock_irqrestore(&ds_lock, flags);

		return;

	}



	if (event != LDC_EVENT_DATA_READY) {

		printk(KERN_WARNING PFX "Unexpected LDC event %d\n", event);

		spin_unlock_irqrestore(&ds_lock, flags);