amd-xgbe: Mask auto-negotiation interrupts in ISR

Currently the auto-negotiation interrupt handling disables the irq
instead of masking off the interrupts. This was done because the phy
library was originally used to read and write the PCS registers, which
could not be performed in interrupt context. Now that the phy library is
no longer used to read and write the PCS registers the interrupts can be
masked off in the interrupt service routine eliminating the need to call
disable_irq/enable_irq. This also requires changing the protection mutex
to a spinlock.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h
index ca2835485450..98d9d63c4353 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe.h
@@ -774,8 +774,8 @@ struct xgbe_prv_data {
 	/* Overall device lock */
 	spinlock_t lock;
 
-	/* XPCS indirect addressing mutex */
-	struct mutex xpcs_mutex;
+	/* XPCS indirect addressing lock */
+	spinlock_t xpcs_lock;
 
 	/* RSS addressing mutex */
 	struct mutex rss_mutex;
@@ -927,6 +927,7 @@ struct xgbe_prv_data {
 	u32 serdes_dfe_tap_ena[XGBE_SPEEDS];
 
 	/* Auto-negotiation state machine support */
+	unsigned int an_int;
 	struct mutex an_mutex;
 	enum xgbe_an an_result;
 	enum xgbe_an an_state;