net: systemport: Fix ordering in intrl2_*_mask_clear macro

Since we keep shadow copies of which interrupt sources are enabled
through the intrl2_*_mask_{set,clear} macros, make sure that the
ordering in which we do these two operations: update the copy, then
unmask the register is correct.

This is not currently a problem because we actually do not use them, but
we will in a subsequent patch optimizing register accesses, so better be
safe here.

Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index b2d3086..2059911 100644 (file)
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -58,8 +58,8 @@ BCM_SYSPORT_IO_MACRO(topctrl, SYS_PORT_TOPCTRL_OFFSET);
 static inline void intrl2_##which##_mask_clear(struct bcm_sysport_priv *priv, \
                                                u32 mask)               \
 {                                                                      \
-       intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR);     \
        priv->irq##which##_mask &= ~(mask);                             \
+       intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR);     \
 }                                                                      \
 static inline void intrl2_##which##_mask_set(struct bcm_sysport_priv *priv, \
                                                u32 mask)               \