[PATCH 4.14 008/109] net: dsa: bcm_sf2: Call setup during switch resume

Greg Kroah-Hartman
2018-10-16T17:19:01Z

From: Florian Fainelli <f.fainelli@gmail.com>

[ Upstream commit 54baca096386d862d19c10f58f34bf787c6b3cbe ]

There is no reason to open code what the switch setup function does, in
fact, because we just issued a switch reset, we would make all the
register get their default values, including for instance, having unused
port be enabled again and wasting power and leading to an inappropriate
switch core clock being selected.

Fixes: 8cfa94984c9c ("net: dsa: bcm_sf2: add suspend/resume callbacks")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/dsa/bcm_sf2.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -772,7 +772,6 @@ static int bcm_sf2_sw_suspend(struct dsa
static int bcm_sf2_sw_resume(struct dsa_switch *ds)
{
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
- unsigned int port;
int ret;

ret = bcm_sf2_sw_rst(priv);
@@ -784,12 +783,7 @@ static int bcm_sf2_sw_resume(struct dsa_
if (priv->hw_params.num_gphy == 1)
bcm_sf2_gphy_enable_set(ds, true);

- for (port = 0; port < DSA_MAX_PORTS; port++) {
- if ((1 << port) & ds->enabled_port_mask)
- bcm_sf2_port_setup(ds, port, NULL);
- else if (dsa_is_cpu_port(ds, port))
- bcm_sf2_imp_setup(ds, port);
- }
+ ds->ops->setup(ds);

return 0;
}