[PATCH] scsi: mvme16x: put SCSI host on remove

[Guangshuo Li]

mvme16x_probe() obtains a SCSI host through NCR_700_detect(). The
probe failure path drops the host reference with scsi_host_put(), but
the normal remove path does not perform the corresponding cleanup.

As a result, the SCSI host reference remains allocated after the
driver is removed.

Call scsi_host_put() after all users of the SCSI host have been torn
down to release the reference acquired during probe.

This issue was found by manual code inspection.

Fixes: 506c7bbcd9bc ("[SCSI] 53c700: m68k MVME16x NCR53C710 SCSI")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Guangshuo Li <lgs201920130244@xxxxxxxxx>
---
 drivers/scsi/mvme16x_scsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/mvme16x_scsi.c b/drivers/scsi/mvme16x_scsi.c
index f4db93c13986..8191b1e273eb 100644
--- a/drivers/scsi/mvme16x_scsi.c
+++ b/drivers/scsi/mvme16x_scsi.c
@@ -120,6 +120,7 @@ static void mvme16x_device_remove(struct platform_device *dev)
 	NCR_700_release(host);
 	kfree(hostdata);
 	free_irq(host->irq, host);
+	scsi_host_put(host);
 }
 
 static struct platform_driver mvme16x_scsi_driver = {
-- 
2.43.0