[PATCH 01/11] PCI: tegra194: Propagate REFCLK select GPIO errors

[Manikanta Maddireddy <mmaddireddy@nvidia.com>]

devm_gpiod_get_optional() returns NULL only when the optional GPIO is
absent. Other error pointers, including -EPROBE_DEFER, describe real
failures and should not be converted to NULL.

Return dev_err_probe() errors for nvidia,refclk-select so probe does not
continue without a GPIO that exists but is not ready or could not be
requested.

Fixes: c57247f940e8 ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
---
 drivers/pci/controller/dwc/pcie-tegra194.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 2462da8664e0..f2b75bf49a12 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1206,18 +1206,9 @@ static int tegra_pcie_dw_parse_dt(struct tegra_pcie_dw *pcie)
 	pcie->pex_refclk_sel_gpiod = devm_gpiod_get_optional(pcie->dev,
 							     "nvidia,refclk-select",
 							     GPIOD_OUT_HIGH);
-	if (IS_ERR(pcie->pex_refclk_sel_gpiod)) {
-		int err = PTR_ERR(pcie->pex_refclk_sel_gpiod);
-		const char *level = KERN_ERR;
-
-		if (err == -EPROBE_DEFER)
-			level = KERN_DEBUG;
-
-		dev_printk(level, pcie->dev,
-			   dev_fmt("Failed to get REFCLK select GPIOs: %d\n"),
-			   err);
-		pcie->pex_refclk_sel_gpiod = NULL;
-	}
+	if (IS_ERR(pcie->pex_refclk_sel_gpiod))
+		return dev_err_probe(pcie->dev, PTR_ERR(pcie->pex_refclk_sel_gpiod),
+				     "Failed to get REFCLK select GPIO\n");
 
 	return 0;
 }
-- 
2.34.1