[PATCH] net: stmmac: make reset control an optional requirement
From: <hidden>
Date: 2015-03-06 21:52:46
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Subsystem:
arm/socfpga dwmac glue layer, networking drivers, stmmac ethernet driver, the rest · Maintainers:
Maxime Chevallier, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Dinh Nguyen <redacted> 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 <redacted> Cc: Vince Bridgers <redacted> CC: David S. Miller <davem@davemloft.net> --- 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 e97074c..ecb0b9b 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) + ret = -EPROBE_DEFER; + dwmac->stmmac_rst = NULL; } dwmac->interface = of_get_phy_mode(np);
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2.2.1