4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sanjuán García, Jorge <Jorge.SanjuanGarcia@xxxxxxxxxx>
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@xxxxxxxxxx>
Reviewed-by: Jose Javier Rodriguez Barbarin <JoseJavier.Rodriguez@xxxxxxxxxx>
Signed-off-by: Jorge Sanjuan Garcia <jorge.sanjuangarcia@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231019141434.57971-2-jorge.sanjuangarcia@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mcb/mcb-core.c | 1 +
drivers/mcb/mcb-parse.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mcb/mcb-core.c
+++ b/drivers/mcb/mcb-core.c
@@ -251,6 +251,7 @@ int mcb_device_register(struct mcb_bus *
return 0;
out:
+ put_device(&dev->dev);
return ret;
}
--- a/drivers/mcb/mcb-parse.c
+++ b/drivers/mcb/mcb-parse.c
@@ -105,7 +105,7 @@ static int chameleon_parse_gdd(struct mc
return 0;
err:
- put_device(&mdev->dev);
+ mcb_free_dev(mdev);
return ret;
}
