[PATCH 1/2] mfd: lp8788: Fix an error handling path in lp8788_probe()

From: Christophe JAILLET
Date: Sun Jul 31 2022 - 05:55:42 EST


Should an error occurs in mfd_add_devices(), some resources need to be
released, as already done in the .remove() function.

Add an error handling path and a lp8788_irq_exit() call to undo a previous
lp8788_irq_init().

Fixes: eea6b7cc53aa ("mfd: Add lp8788 mfd driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/mfd/lp8788.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/lp8788.c b/drivers/mfd/lp8788.c
index c223d2c6a363..998e8cc408a0 100644
--- a/drivers/mfd/lp8788.c
+++ b/drivers/mfd/lp8788.c
@@ -195,8 +195,16 @@ static int lp8788_probe(struct i2c_client *cl, const struct i2c_device_id *id)
if (ret)
return ret;

- return mfd_add_devices(lp->dev, -1, lp8788_devs,
- ARRAY_SIZE(lp8788_devs), NULL, 0, NULL);
+ ret = mfd_add_devices(lp->dev, -1, lp8788_devs,
+ ARRAY_SIZE(lp8788_devs), NULL, 0, NULL);
+ if (ret)
+ goto err_exit_irq;
+
+ return 0;
+
+err_exit_irq:
+ lp8788_irq_exit(lp);
+ return ret;
}

static int lp8788_remove(struct i2c_client *cl)
--
2.34.1