The macro magic to build constant bitmaps of supported PHY features
breaks when we have more than 63 ETHTOOL_LINK_MODE bits. Make the
breakage loud, not a subtle bug, when we get to that condition.
Signed-off-by: Andrew Lunn <and...@lunn.ch>
---
drivers/net/phy/phy_device.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index eed61ee1d394..7bee59c7834b 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2297,6 +2297,13 @@ static int __init phy_init(void)
{
int rc;
+ /* The phy_basic_features, phy_gbit_features etc, above, only
+ * work for values up to 63. Ensure we get a loud error if
+ * this threshold is exceeded, and the necessary changes are
+ * made.
+ */
+ BUILD_BUG_ON(__ETHTOOL_LINK_MODE_LAST > 63);
+
rc = mdio_bus_init();
if (rc)
return rc;
--
2.19.0.rc1
