Merge tag 'kvm-s390-master-6.0-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

More pci fixes
Fix for a code analyser warning

1 files changed, 54 insertions, 4 deletions

diff --git a/drivers/net/phy/microchip_t1.c b/drivers/net/phy/microchip_t1.c
index d4c93d59bc53..8569a545e0a3 100644
--- a/drivers/net/phy/microchip_t1.c
+++ b/drivers/net/phy/microchip_t1.c
@@ -28,12 +28,16 @@
 
 /* Interrupt Source Register */
 #define LAN87XX_INTERRUPT_SOURCE                (0x18)
+#define LAN87XX_INTERRUPT_SOURCE_2              (0x08)
 
 /* Interrupt Mask Register */
 #define LAN87XX_INTERRUPT_MASK                  (0x19)
 #define LAN87XX_MASK_LINK_UP                    (0x0004)
 #define LAN87XX_MASK_LINK_DOWN                  (0x0002)
 
+#define LAN87XX_INTERRUPT_MASK_2                (0x09)
+#define LAN87XX_MASK_COMM_RDY			BIT(10)
+
 /* MISC Control 1 Register */
 #define LAN87XX_CTRL_1                          (0x11)
 #define LAN87XX_MASK_RGMII_TXC_DLY_EN           (0x4000)
@@ -424,17 +428,55 @@ static int lan87xx_phy_config_intr(struct phy_device *phydev)
 	int rc, val = 0;
 
 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
-		/* unmask all source and clear them before enable */
-		rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, 0x7FFF);
+		/* clear all interrupt */
+		rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val);
+		if (rc < 0)
+			return rc;
+
 		rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);
-		val = LAN87XX_MASK_LINK_UP | LAN87XX_MASK_LINK_DOWN;
+		if (rc < 0)
+			return rc;
+
+		rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE,
+				 PHYACC_ATTR_BANK_MISC,
+				 LAN87XX_INTERRUPT_MASK_2, val);
+		if (rc < 0)
+			return rc;
+
+		rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ,
+				 PHYACC_ATTR_BANK_MISC,
+				 LAN87XX_INTERRUPT_SOURCE_2, 0);
+		if (rc < 0)
+			return rc;
+
+		/* enable link down and comm ready interrupt */
+		val = LAN87XX_MASK_LINK_DOWN;
 		rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val);
+		if (rc < 0)
+			return rc;
+
+		val = LAN87XX_MASK_COMM_RDY;
+		rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE,
+				 PHYACC_ATTR_BANK_MISC,
+				 LAN87XX_INTERRUPT_MASK_2, val);
 	} else {
 		rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val);
-		if (rc)
+		if (rc < 0)
 			return rc;
 
 		rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);
+		if (rc < 0)
+			return rc;
+
+		rc = access_ereg(phydev, PHYACC_ATTR_MODE_WRITE,
+				 PHYACC_ATTR_BANK_MISC,
+				 LAN87XX_INTERRUPT_MASK_2, val);
+		if (rc < 0)
+			return rc;
+
+		rc = access_ereg(phydev, PHYACC_ATTR_MODE_READ,
+				 PHYACC_ATTR_BANK_MISC,
+				 LAN87XX_INTERRUPT_SOURCE_2, 0);
 	}
 
 	return rc < 0 ? rc : 0;
@@ -444,6 +486,14 @@ static irqreturn_t lan87xx_handle_interrupt(struct phy_device *phydev)
 {
 	int irq_status;
 
+	irq_status  = access_ereg(phydev, PHYACC_ATTR_MODE_READ,
+				  PHYACC_ATTR_BANK_MISC,
+				  LAN87XX_INTERRUPT_SOURCE_2, 0);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
 	irq_status = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);
 	if (irq_status < 0) {
 		phy_error(phydev);