[PATCH] spi: Handle SPI device setup callback failure.

[Joe Burmeister <joe.burmeister@xxxxxxxxxxxxx>]

If the setup callback failed, but the controller has auto_runtime_pm
and set_cs, the setup failure could be missed.

Signed-off-by: Joe Burmeister <joe.burmeister@xxxxxxxxxxxxx>
---
 drivers/spi/spi.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 8b283b2c1668..0c39178f4401 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3388,8 +3388,15 @@ int spi_setup(struct spi_device *spi)
 
 	mutex_lock(&spi->controller->io_mutex);
 
-	if (spi->controller->setup)
+	if (spi->controller->setup) {
 		status = spi->controller->setup(spi);
+		if (status) {
+			mutex_unlock(&spi->controller->io_mutex);
+			dev_err(&spi->controller->dev, "Failed to setup device: %d\n",
+				status);
+			return status;
+		}
+	}
 
 	if (spi->controller->auto_runtime_pm && spi->controller->set_cs) {
 		status = pm_runtime_get_sync(spi->controller->dev.parent);
-- 
2.30.2