linux-kernel - [PATCH AUTOSEL 5.9 07/21] pinctrl: mcp23s08: Print error message when regmap init fails

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Message-Id: <20201117125652.599614-7-sashal@kernel.org>
Date:   Tue, 17 Nov 2020 07:56:38 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Martin Hundebøll <martin@...nix.com>,
        Jan Kundrát <jan.kundrat@...net.cz>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <sashal@...nel.org>, linux-gpio@...r.kernel.org
Subject: [PATCH AUTOSEL 5.9 07/21] pinctrl: mcp23s08: Print error message when regmap init fails

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

[ Upstream commit a835d3a114ab0dc2f0d8c6963c3f53734b1c5965 ]

It is useful for debugging to have the error message printed
when regmap initialisation fails. Add it to the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Martin Hundebøll <martin@...nix.com>
Link: https://lore.kernel.org/r/20201009180856.4738-2-andriy.shevchenko@linux.intel.com
Tested-by: Jan Kundrát <jan.kundrat@...net.cz>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/pinctrl-mcp23s08_spi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-mcp23s08_spi.c b/drivers/pinctrl/pinctrl-mcp23s08_spi.c
index 1f47a661b0a79..52e32634bb5a7 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08_spi.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08_spi.c
@@ -126,6 +126,8 @@ static int mcp23s08_spi_regmap_init(struct mcp23s08 *mcp, struct device *dev,
 	copy->name = name;
 
 	mcp->regmap = devm_regmap_init(dev, &mcp23sxx_spi_regmap, mcp, copy);
+	if (IS_ERR(mcp->regmap))
+		dev_err(dev, "regmap init failed for %s\n", mcp->chip.label);
 	return PTR_ERR_OR_ZERO(mcp->regmap);
 }
 
-- 
2.27.0