tree fedfec099af1eba7cc7f12347b4a72d5ef3a8f59
parent 0138dfb7b3325dcd7347ccaa0c256c6fd9239b8d
author Kangjie Lu <kjlu@umn.edu> 1545419439 -0600
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1549997097 +0100

hwmon: (lm80) fix a missing check of bus read in lm80 probe

[ Upstream commit 9aa3aa15f4c2f74f47afd6c5db4b420fadf3f315 ]

In lm80_probe(), if lm80_read_value() fails, it returns a negative
error number which is stored to data->fan[f_min] and will be further
used. We should avoid using the data if the read fails.

The fix checks if lm80_read_value() fails, and if so, returns with the
error number.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>