pch_phub: Report error writing MAC back to user
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
index a5925f7f..9565973 100644
--- a/drivers/misc/pch_phub.c
+++ b/drivers/misc/pch_phub.c
@@ -636,6 +636,7 @@
u8 mac[ETH_ALEN];
ssize_t rom_size;
struct pch_phub_reg *chip = dev_get_drvdata(dev);
+ int ret;
if (!mac_pton(buf, mac))
return -EINVAL;
@@ -644,8 +645,10 @@
if (!chip->pch_phub_extrom_base_address)
return -ENOMEM;
- pch_phub_write_gbe_mac_addr(chip, mac);
+ ret = pch_phub_write_gbe_mac_addr(chip, mac);
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
+ if (ret)
+ return ret;
return count;
}