[PATCH v1 2/2] pinctrl: mcp23s08: Print error message when regmap init fails

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

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

Cc: Martin Hundebøll <martin@geanix.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 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 7c72cffe1412..9ae10318f6f3 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);
 }
 
-- 
2.28.0