From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Date: Tue, 13 Jan 2015 14:10:24 +0000 (+0300)
Subject: net/designware: add error message on DMA reset timeout
X-Git-Tag: KARO-TXA5-2015-06-26~38^2~5^2
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=875143f32428b8317a2b890b34a1eeb31cbf8a53

net/designware: add error message on DMA reset timeout

If for some reason DMA module fails to reset user oserves only this:
--->---
# dhcp
Trying dwmac.e0018000
FAIL
--->---

This message makes not much sense.
With proposed change error message will be more helpful:
--->---
# dhcp
Trying dwmac.e0018000
DMA reset timeout
FAIL
--->---

For example user may do power toggle to recover board functionality.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Pavel Machek <pavel@denx.de>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Marek Vasut <marex@denx.de>
Reviewed-by: Tom Rini <trini@ti.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
---

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 9ded8950b8..c03e935e2f 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -236,8 +236,10 @@ static int dw_eth_init(struct eth_device *dev, bd_t *bis)
 
 	start = get_timer(0);
 	while (readl(&dma_p->busmode) & DMAMAC_SRST) {
-		if (get_timer(start) >= CONFIG_MACRESET_TIMEOUT)
+		if (get_timer(start) >= CONFIG_MACRESET_TIMEOUT) {
+			printf("DMA reset timeout\n");
 			return -1;
+		}
 
 		mdelay(100);
 	};