diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-09-08 19:48:04 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-09-09 10:59:12 +0100 |
| commit | 96980ff7c2caa5baef0c684e719547a53762e82c (patch) | |
| tree | e5f702255b90a8d9d33d45de3cc4bf7543b1977a /drivers/net/dsa/ocelot | |
| parent | 0a2360c59687e4caec363565c166e8a2b3e30677 (diff) | |
net: mscc: ocelot: make access to STAT_VIEW sleepable again
To support SPI-controlled switches in the future, access to
SYS_STAT_CFG_STAT_VIEW needs to be done outside of any spinlock
protected region, but it still needs to be serialized (by a mutex).
Split the ocelot->stats_lock spinlock into a mutex that serializes
indirect access to hardware registers (ocelot->stat_view_lock) and a
spinlock that serializes access to the u64 ocelot->stats array.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/ocelot')
| -rw-r--r-- | drivers/net/dsa/ocelot/felix_vsc9959.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index 3c80df4253b2..858ccf1e67f0 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c @@ -2574,7 +2574,7 @@ static void vsc9959_psfp_sgi_table_del(struct ocelot *ocelot, static void vsc9959_psfp_counters_get(struct ocelot *ocelot, u32 index, struct felix_stream_filter_counters *counters) { - spin_lock(&ocelot->stats_lock); + mutex_lock(&ocelot->stat_view_lock); ocelot_rmw(ocelot, SYS_STAT_CFG_STAT_VIEW(index), SYS_STAT_CFG_STAT_VIEW_M, @@ -2593,7 +2593,7 @@ static void vsc9959_psfp_counters_get(struct ocelot *ocelot, u32 index, SYS_STAT_CFG_STAT_CLEAR_SHOT(0x10), SYS_STAT_CFG); - spin_unlock(&ocelot->stats_lock); + mutex_unlock(&ocelot->stat_view_lock); } static int vsc9959_psfp_filter_add(struct ocelot *ocelot, int port, |