From: Lothar Waßmann <LW@KARO-electronics.de>
Date: Fri, 9 Oct 2015 08:53:38 +0000 (+0200)
Subject: net: fec_mxc: don't try to clear read-only registers
X-Git-Tag: KARO-TX6UL-2015-10-23~32
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=05f69dca34ee96d087b984800a0cc6d360827c5a;ds=sidebyside

net: fec_mxc: don't try to clear read-only registers

The registers in the affected address range are all read only. There
is no use in trying to clear them.
---

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index aed7e07fc6..61f2db834c 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -531,8 +531,6 @@ static int fec_open(struct eth_device *edev)
 static int fec_init(struct eth_device *dev, bd_t* bd)
 {
 	struct fec_priv *fec = dev->priv;
-	uint32_t *mib_ptr = (uint32_t *)&fec->eth->rmon_t_drop;
-	int i;
 
 	/* Initialize MAC address */
 	fec_set_hwaddr(dev);
@@ -561,11 +559,6 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
 	writel(0x00000000, &fec->eth->gaddr1);
 	writel(0x00000000, &fec->eth->gaddr2);
 
-
-	/* clear MIB RAM */
-	for (i = 0; i <= 0xfc >> 2; i++)
-		writel(0, &mib_ptr[i]);
-
 	/* FIFO receive start register */
 	writel(0x520, &fec->eth->r_fstart);