Patch "net: fec: defer probe if regulator is not ready" has been added to the 4.14-stable tree

Patch "net: fec: defer probe if regulator is not ready" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    net: fec: defer probe if regulator is not ready

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-fec-defer-probe-if-regulator-is-not-ready.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sat Jan 13 10:51:05 CET 2018
From: Fugang Duan <fugang.duan@nxp.com>
Date: Wed, 3 Jan 2018 10:39:30 +0800
Subject: net: fec: defer probe if regulator is not ready

From: Fugang Duan <fugang.duan@nxp.com>


[ Upstream commit 3f38c683033a9a0a2738e7067f449deefabfa3ef ]

Defer probe if regulator is not ready. E.g. some regulator is fixed
regulator controlled by i2c expander gpio, the i2c device may be probed
after the driver, then it should handle the case of defer probe error.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/freescale/fec_main.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -3458,6 +3458,10 @@ fec_probe(struct platform_device *pdev)
 			goto failed_regulator;
 		}
 	} else {
+		if (PTR_ERR(fep->reg_phy) == -EPROBE_DEFER) {
+			ret = -EPROBE_DEFER;
+			goto failed_regulator;
+		}
 		fep->reg_phy = NULL;
 	}
 


Patches currently in stable-queue which might be from fugang.duan@nxp.com are

queue-4.14/net-fec-defer-probe-if-regulator-is-not-ready.patch
queue-4.14/net-fec-free-restore-resource-in-related-probe-error-pathes.patch
queue-4.14/net-fec-restore-dev_id-in-the-cases-of-probe-error.patch