From: Esben Haabendal <esben@geanix.com>
Date: Thu, 17 Jun 2021 09:49:20 +0000 (+0200)
Subject: net: gianfar: Clear CAR registers
X-Git-Tag: baikal/aarch64/sdk6.1~6332^2~136^2~3
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=26cf6e1944885388cc8d972db5a7358a3aa19895;p=kernel.git

net: gianfar: Clear CAR registers

The CAR1 and CAR2 registers are W1C style registers, to the memset does not
actually clear them.

Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index a0277fe8cc60e..ebd1065f39fac 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -3103,6 +3103,9 @@ static void gfar_hw_init(struct gfar_private *priv)
 		/* Mask off the CAM interrupts */
 		gfar_write(&regs->rmon.cam1, 0xffffffff);
 		gfar_write(&regs->rmon.cam2, 0xffffffff);
+		/* Clear the CAR registers (w1c style) */
+		gfar_write(&regs->rmon.car1, 0xffffffff);
+		gfar_write(&regs->rmon.car2, 0xffffffff);
 	}
 
 	/* Initialize ECNTRL */