[PATCH] usb: dwc3: Fix non-usb3 configurations

From: Jan Kiszka <jan.kiszka@siemens.com>
To: Michal Simek <michal.simek@xilinx.com>,
	Marek Vasut <marex@denx.de>,
	U-Boot Mailing List <u-boot@lists.denx.de>
Cc: Angus Ainslie <angus@akkea.ca>,
	Kunihiko Hayashi <hayashi.kunihiko@socionext.com>,
	Simon Glass <sjg@chromium.org>
Subject: [PATCH] usb: dwc3: Fix non-usb3 configurations
Date: Mon, 25 Apr 2022 13:26:45 +0200	[thread overview]
Message-ID: <c5a71c30-e55d-c8ab-d372-e5aaa859cf2a@siemens.com> (raw)

From: Jan Kiszka <jan.kiszka@siemens.com>

Missing nodes may also be signaled via -ENODATA. We need to check for
that to prevent failing in non-usb3 setups.

Furthermore, dev.phy must be NULL'ed in case usb3-phy was not found.

Fixes: 142d50fbce7c ("usb: dwc3: Add support for usb3-phy PHY configuration")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 drivers/usb/dwc3/dwc3-generic.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index 6e1a1d066b4..c5310e465cb 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -468,9 +468,11 @@ static int dwc3_glue_probe(struct udevice *dev)
 		ret = generic_phy_init(&phy);
 		if (ret)
 			return ret;
-	} else if (ret != -ENOENT) {
+	} else if (ret != -ENOENT && ret != -ENODATA) {
 		debug("could not get phy (err %d)\n", ret);
 		return ret;
+	} else {
+		phy.dev = NULL;
 	}
 
 	glue->regs = dev_read_addr(dev);
-- 
2.34.1
