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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>
This commit is contained in:
Dinh Nguyen 2015-03-06 17:48:28 -06:00 committed by David S. Miller
parent 9b974499e4
commit cbe21d92e4
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
View File

@ -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);