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mcb: fix error handling for different scenarios when parsing

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commit 63ba2d07b4be72b94216d20561f43e1150b25d98 upstream.

chameleon_parse_gdd() may fail for different reasons and end up
in the err tag. Make sure we at least always free the mcb_device
allocated with mcb_alloc_dev().

If mcb_device_register() fails, make sure to give up the reference
in the same place the device was added.

Fixes: 728ac3389296 ("mcb: mcb-parse: fix error handing in chameleon_parse_gdd()")
Cc: stable <stable@kernel.org>
Reviewed-by: Jose Javier Rodriguez Barbarin <JoseJavier.Rodriguez@duagon.com>
Signed-off-by: Jorge Sanjuan Garcia <jorge.sanjuangarcia@duagon.com>
Link: https://lore.kernel.org/r/20231019141434.57971-2-jorge.sanjuangarcia@duagon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sanjuán García, Jorge 2023-10-19 14:15:34 +00:00 committed by Greg Kroah-Hartman
parent 25eb381a73
commit 4a5c267d57
2 changed files with 2 additions and 1 deletions
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1
drivers/mcb/mcb-core.c
View File

@ -248,6 +248,7 @@ int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev)
return 0;
out:
put_device(&dev->dev);
return ret;
}

2
drivers/mcb/mcb-parse.c
View File

@ -106,7 +106,7 @@ static int chameleon_parse_gdd(struct mcb_bus *bus,
return 0;
err:
put_device(&mdev->dev);
mcb_free_dev(mdev);
return ret;
}