[PATCH 5.14 091/334] media: cxd2880-spi: Fix an error handling path

Greg Kroah-Hartman
2021-09-13T14:29:30Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit dcb0145821017e929a733e2271c85c6f82b9c9f8 ]

If an error occurs after a successful 'regulator_enable()' call,
'regulator_disable()' must be called.

Fix the error handling path of the probe accordingly.

Fixes: cb496cd472af ("media: cxd2880-spi: Add optional vcc regulator")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/spi/cxd2880-spi.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/media/spi/cxd2880-spi.c b/drivers/media/spi/cxd2880-spi.c
index e5094fff04c5..b91a1e845b97 100644
--- a/drivers/media/spi/cxd2880-spi.c
+++ b/drivers/media/spi/cxd2880-spi.c
@@ -524,13 +524,13 @@ cxd2880_spi_probe(struct spi_device *spi)
if (IS_ERR(dvb_spi->vcc_supply)) {
if (PTR_ERR(dvb_spi->vcc_supply) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
- goto fail_adapter;
+ goto fail_regulator;
}
dvb_spi->vcc_supply = NULL;
} else {
ret = regulator_enable(dvb_spi->vcc_supply);
if (ret)
- goto fail_adapter;
+ goto fail_regulator;
}

dvb_spi->spi = spi;
@@ -618,6 +618,9 @@ fail_frontend:
fail_attach:
dvb_unregister_adapter(&dvb_spi->adapter);
fail_adapter:
+ if (!dvb_spi->vcc_supply)
+ regulator_disable(dvb_spi->vcc_supply);
+fail_regulator:
kfree(dvb_spi);
return ret;
}
--
2.30.2