On 9/25/2013 7:03 PM, Alexey Brodkin wrote:
"bus mode" register contains lots of fields and some of them don't
expect to be written with 0 (zero). So since we're only interested in
resetting MAC (which is done with setting the least significant bit of
this register with "0") I believe it's better to modify only 1 bit of
the register.
Signed-off-by: Alexey Brodkin<[email protected]>
---
drivers/net/designware.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 46f6601..f11cb0b 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -112,7 +112,7 @@ static int mac_reset(struct eth_device *dev)
ulong start;
int timeout = CONFIG_MACRESET_TIMEOUT;
- writel(DMAMAC_SRST,&dma_p->busmode);
+ writel(readl(&dma_p->busmode) | DMAMAC_SRST,&dma_p->busmode);
Acked-by: Vipin Kumar <[email protected]>
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