sfc: Clean up MDIO flag setting

We often want to set or clear a flag in an MDIO register, but avoid
writing if no change is required since this can have side-effects.
Encapsulate this in a function, mdio_clause45_set_flag().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/sfc/mdio_10g.h b/drivers/net/sfc/mdio_10g.h
index 45163838130e..4830e0c1da0b 100644
--- a/drivers/net/sfc/mdio_10g.h
+++ b/drivers/net/sfc/mdio_10g.h
@@ -259,4 +259,8 @@ extern int mdio_clause45_set_settings(struct efx_nic *efx,
 extern int mdio_clause45_wait_reset_mmds(struct efx_nic *efx,
                                          unsigned int mmd_mask);
 
+/* Set or clear flag, debouncing */
+extern void mdio_clause45_set_flag(struct efx_nic *efx, u8 prt, u8 dev,
+                                   u16 addr, int bit, bool sense);
+
 #endif /* EFX_MDIO_10G_H */