spi: spi-nxp-fspi: Check return value of devm_mutex_init()

commit d24a54e032021cf381af3c3cf119cc5cf6b3c1be upstream.

devm_mutex_init() can fail. With CONFIG_DEBUG_MUTEXES=y the mutex will
be marked as unusable and trigger errors on usage.

Add the missed check.

Fixes: 48900813abd2 ("spi: spi-nxp-fspi: remove the goto in probe")
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20250617-must_check-devm_mutex_init-v7-1-d9e449f4d224@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index 5100b189c905048e7a8c963241bdb1bca92b2bc9..a43540d7995ef268a897d97744d6df3d605b4f25 100644 (file)
--- a/drivers/spi/spi-nxp-fspi.c
+++ b/drivers/spi/spi-nxp-fspi.c
@@ -1249,7 +1249,9 @@ static int nxp_fspi_probe(struct platform_device *pdev)
                return dev_err_probe(dev, ret, "Failed to request irq\n");
        }
 
-       devm_mutex_init(dev, &f->lock);
+       ret = devm_mutex_init(dev, &f->lock);
+       if (ret)
+               return dev_err_probe(dev, ret, "Failed to initialize lock\n");
 
        ctlr->bus_num = -1;
        ctlr->num_chipselect = NXP_FSPI_MAX_CHIPSELECT;