From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH] net: stmmac: make reset control an optional requirement Date: Fri, 6 Mar 2015 15:32:55 -0600 Message-ID: <1425677575-26181-1-git-send-email-dinguyen@opensource.altera.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , Dinh Nguyen , Vince Bridgers , "David S. Miller" To: Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Dinh Nguyen 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 Cc: Vince Bridgers CC: David S. Miller --- 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); -- 2.2.1