[PATCH AUTOSEL 4.14 5/8] scsi: sd: Free scsi_disk device via put_device()

From: Sasha Levin
Date: Tue Sep 28 2021 - 02:02:03 EST


From: Ming Lei <ming.lei@xxxxxxxxxx>

[ Upstream commit 265dfe8ebbabae7959060bd1c3f75c2473b697ed ]

After a device is initialized via device_initialize() it should be freed
via put_device(). sd_probe() currently gets this wrong, fix it up.

Link: https://lore.kernel.org/r/20210906090112.531442-1-ming.lei@xxxxxxxxxx
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/scsi/sd.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 49d0720a0b7d..e490cbdaad9b 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3454,15 +3454,16 @@ static int sd_probe(struct device *dev)
}

device_initialize(&sdkp->dev);
- sdkp->dev.parent = dev;
+ sdkp->dev.parent = get_device(dev);
sdkp->dev.class = &sd_disk_class;
dev_set_name(&sdkp->dev, "%s", dev_name(dev));

error = device_add(&sdkp->dev);
- if (error)
- goto out_free_index;
+ if (error) {
+ put_device(&sdkp->dev);
+ goto out;
+ }

- get_device(dev);
dev_set_drvdata(dev, sdkp);

get_device(&sdkp->dev); /* prevent release before async_schedule */
--
2.33.0