From: Dinh Nguyen <dingu...@opensource.altera.com>
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 <dingu...@opensource.altera.com>
Cc: Vince Bridgers <vbrid...@opensource.altera.com>
CC: David S. Miller <da...@davemloft.net>
---
v2: return EPROBE_DEFER directly as 'ret' is not used as return variable
---
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 3aad413..9987b34 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -89,7 +89,9 @@ 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);
--
2.2.1
--
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