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authorDavid S. Miller <davem@sunset.davemloft.net>2007-07-17 23:12:20 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-18 01:20:09 -0700
commit8a2950cce6c8fa29bcbf6a3b33a63e0e68337f0e (patch)
treed7692cd45035a78e7968a2fb23865ec4b8c95892 /arch/sparc64
parent6160f63518406485c7009cb0f2e1588ea3abccc1 (diff)
downloadlinux-2.6.34-ux500-8a2950cce6c8fa29bcbf6a3b33a63e0e68337f0e.tar.gz
[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: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/ds.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c
index ba01533f4e0..fa1f04d756a 100644
--- a/arch/sparc64/kernel/ds.c
+++ b/arch/sparc64/kernel/ds.c
@@ -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);