net: bgmac: fix reversed checks for clock control flag

Rafał Miłecki · davem330 · commit cdb26d3387f0 · 2016-11-09T13:32:06.000-05:00
This fixes regression introduced by patch adding feature flags. It was already reported and patch followed (it got accepted) but it appears it was incorrect. Instead of fixing reversed condition it broke a good one. This patch was verified to actually fix SoC hanges caused by bgmac on BCM47186B0. Fixes: db791eb ("net: ethernet: bgmac: convert to feature flags") Fixes: 4af1474 ("net: bgmac: Fix errant feature flag check") Cc: Jon Mason <jon.mason@broadcom.com> Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1049,9 +1049,9 @@ static void bgmac_enable(struct bgmac *bgmac)
 
 	mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >>
 		BGMAC_DS_MM_SHIFT;
-	if (!(bgmac->feature_flags & BGMAC_FEAT_CLKCTLST) || mode != 0)
+	if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST || mode != 0)
 		bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
-	if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST && mode == 2)
+	if (!(bgmac->feature_flags & BGMAC_FEAT_CLKCTLST) && mode == 2)
 		bgmac_cco_ctl_maskset(bgmac, 1, ~0,
 				      BGMAC_CHIPCTL_1_RXC_DLL_BYPASS);
 
