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Subject: media: cxd2880-spi: Fix a null pointer dereference on error handling
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Author: Colin Ian King <colin.k...@canonical.com>
Date: Tue Jul 20 18:07:49 2021 +0200
Currently the null pointer check on dvb_spi->vcc_supply is inverted and
this leads to only null values of the dvb_spi->vcc_supply being passed
to the call of regulator_disable causing null pointer dereferences.
Fix this by only calling regulator_disable if dvb_spi->vcc_supply is
not null.
Addresses-Coverity: ("Dereference after null check")
Fixes: dcb014582101 ("media: cxd2880-spi: Fix an error handling path")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
Signed-off-by: Sean Young <s...@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
drivers/media/spi/cxd2880-spi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/drivers/media/spi/cxd2880-spi.c b/drivers/media/spi/cxd2880-spi.c
index b91a1e845b97..506f52c1af10 100644
--- a/drivers/media/spi/cxd2880-spi.c
+++ b/drivers/media/spi/cxd2880-spi.c
@@ -618,7 +618,7 @@ fail_frontend:
fail_attach:
dvb_unregister_adapter(&dvb_spi->adapter);
fail_adapter:
- if (!dvb_spi->vcc_supply)
+ if (dvb_spi->vcc_supply)
regulator_disable(dvb_spi->vcc_supply);
fail_regulator:
kfree(dvb_spi);
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