scsi: sd: Unregister device if device_add_disk() failed in sd_probe()

"if device_add() succeeds, you should call device_del() when you want to
get rid of it."

In sd_probe(), device_add_disk() fails when device_add() has already
succeeded, so change put_device() to device_unregister() to ensure device
resources are released.

Fixes: 2a7a891f4c40 ("scsi: sd: Add error handling support for add_disk()")
Signed-off-by: Li Nan <linan122@huawei.com>
Link: https://lore.kernel.org/r/20231208082335.1754205-1-linan666@huaweicloud.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3cf89867029044ede7b2f6a844dca974b8d50e32..58fdf679341dc64ee1768f1d09dc7ce4d549b4bd 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3920,7 +3920,7 @@ static int sd_probe(struct device *dev)
 
        error = device_add_disk(dev, gd, NULL);
        if (error) {
-               put_device(&sdkp->disk_dev);
+               device_unregister(&sdkp->disk_dev);
                put_disk(gd);
                goto out;
        }