netdev - [PATCH v4 05/11] net: dsa: microchip: ksz8795: dynamic allocate memory for flush_dyn_mac

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Date:   Mon,  3 Aug 2020 07:44:36 +0200
From:   Michael Grzeschik <m.grzeschik@...gutronix.de>
To:     andrew@...n.ch
Cc:     netdev@...r.kernel.org, f.fainelli@...il.com, davem@...emloft.net,
        kernel@...gutronix.de
Subject: [PATCH v4 05/11] net: dsa: microchip: ksz8795: dynamic allocate memory for flush_dyn_mac_table

To get the driver working with other chips using different port counts
the dyn_mac_table should be flushed depending on the amount of physical
ports.

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>

---
v1 -> v4: - extracted this change from bigger previous patch

 drivers/net/dsa/microchip/ksz8795.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 947ea1e45f5b2c6..ba722f730bf0f7b 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -750,11 +750,11 @@ static void ksz8795_port_stp_state_set(struct dsa_switch *ds, int port,
 
 static void ksz8795_flush_dyn_mac_table(struct ksz_device *dev, int port)
 {
-	u8 learn[TOTAL_PORT_NUM];
+	u8 *learn = kzalloc(dev->mib_port_cnt, GFP_KERNEL);
 	int first, index, cnt;
 	struct ksz_port *p;
 
-	if ((uint)port < TOTAL_PORT_NUM) {
+	if ((uint)port < dev->mib_port_cnt) {
 		first = port;
 		cnt = port + 1;
 	} else {
@@ -779,6 +779,7 @@ static void ksz8795_flush_dyn_mac_table(struct ksz_device *dev, int port)
 		if (!(learn[index] & PORT_LEARN_DISABLE))
 			ksz_pwrite8(dev, index, P_STP_CTRL, learn[index]);
 	}
+	kfree(learn);
 }
 
 static int ksz8795_port_vlan_filtering(struct dsa_switch *ds, int port,
-- 
2.28.0