generic: drop support for get_port_stats() on ar8xxx

[openwrt/staging/dangole.git] / target / linux / generic / files / drivers / net / phy / ar8327.c

diff --git a/target/linux/generic/files/drivers/net/phy/ar8327.c b/target/linux/generic/files/drivers/net/phy/ar8327.c
index bae9744736c6d6002d5413a4e00dd2db4fcaa8a8..6ebd2e8aedf33fc198ef25ed24fc2b06f642a8b4 100644 (file)
--- a/target/linux/generic/files/drivers/net/phy/ar8327.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8327.c
@@ -1411,7 +1411,16 @@ static const struct switch_dev_ops ar8327_sw_ops = {
        .apply_config = ar8327_sw_hw_apply,
        .reset_switch = ar8xxx_sw_reset_switch,
        .get_port_link = ar8xxx_sw_get_port_link,
+/* The following op is disabled as it hogs the CPU and degrades performance.
+   An implementation has been attempted in 4d8a66d but reading MIB data is slow
+   on ar8xxx switches.
+
+   The high CPU load has been traced down to the ar8xxx_reg_wait() call in
+   ar8xxx_mib_op(), which has to usleep_range() till the MIB busy flag set by
+   the request to update the MIB counter is cleared. */
+#if 0
        .get_port_stats = ar8xxx_sw_get_port_stats,
+#endif
 };
 
 const struct ar8xxx_chip ar8327_chip = {