[PATCH 5.3 120/197] ACPI: NFIT: Fix unlock on error in scrub_show()

From: Greg Kroah-Hartman
Date: Sun Oct 27 2019 - 17:22:35 EST


From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

commit edffc70f505abdab885f4b4212438b4298dec78f upstream.

We change the locking in this function and forgot to update this error
path so we are accidentally still holding the "dev->lockdep_mutex".

Fixes: 87a30e1f05d7 ("driver-core, libnvdimm: Let device subsystems add local lockdep coverage")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>
Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: 5.3+ <stable@xxxxxxxxxxxxxxx> # 5.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/acpi/nfit/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1322,7 +1322,7 @@ static ssize_t scrub_show(struct device
nfit_device_lock(dev);
nd_desc = dev_get_drvdata(dev);
if (!nd_desc) {
- device_unlock(dev);
+ nfit_device_unlock(dev);
return rc;
}
acpi_desc = to_acpi_desc(nd_desc);