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authorDinh Nguyen <dinguyen@opensource.altera.com>2015-03-06 17:48:28 -0600
committerDavid S. Miller <davem@davemloft.net>2015-03-08 22:52:45 -0400
commitcbe21d92e4d501e4895ef668b43fd8998c9b3b02 (patch)
treeb519210201802b87d675767c35bed0e555fae862
parent9b974499e44536fd524dfad23f4f8477e6e243ab (diff)
net: stmmac: make reset control an optional requirement
Not having a reset control line to the ethernet controller should not be a hard failure. Instead, add support for deferred probing and just print out a debug statement. Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Vince Bridgers <vbridger@opensource.altera.com> CC: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index e97074cd5800..5a36bd2c7837 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -91,7 +91,9 @@ static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *
STMMAC_RESOURCE_NAME);
if (IS_ERR(dwmac->stmmac_rst)) {
dev_info(dev, "Could not get reset control!\n");
- return -EINVAL;
+ if (PTR_ERR(dwmac->stmmac_rst) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ dwmac->stmmac_rst = NULL;
}
dwmac->interface = of_get_phy_mode(np);