ar71xx: ag71xx: preserve port mirror flags during swconfig apply

The swconfig load operation always triggers 'apply' function which in
this driver currently clears port mirroring flags effectively undoing
port mirroring configuration.

This fix preserves port mirroring flags during apply.

Signed-off-by: Milan Krstic <milan.krstic@gmail.com>

diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
index 3f2f64e2aef80075b8ca804af1cb90d248b913f7..2859c0dbe1641f6215006063248bc8a3810cbd4c 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
@@ -730,6 +730,10 @@ static void ar7240sw_setup_port(struct ar7240sw *as, unsigned port, u8 portmask)
                        portmask = ar7240sw_port_mask(as, AR7240_PORT_CPU);
        }
 
+       /* preserve mirror rx&tx flags */
+       ctrl |= ar7240sw_reg_read(mii, AR7240_REG_PORT_CTRL(port)) &
+               (AR7240_PORT_CTRL_MIRROR_RX | AR7240_PORT_CTRL_MIRROR_TX);
+
        /* allow the port to talk to all other ports, but exclude its
         * own ID to prevent frames from being reflected back to the
         * port that they came from */