batman-adv: Disable __ethtool_get_link_ksettings compat on < 3.2
Commit Message
The __ethtool_get_link_ksettings is currently used only for kernels >=
3.15. But the compat code is read by the compiler for each kernel. But
kernels up to 3.1 never had the function __ethtool_get_settings which is
used to emulate this function for kernels < 4.6. Therefore, kernels < 3.2
will fail to compile when this compatibility layer is enabled.
Fixes: 3515604d82d5 ("batman-adv: ELP - use new ethtool_link_get_ksettings API")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
compat-include/linux/ethtool.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
@@ -24,7 +24,9 @@
#include <linux/version.h>
#include_next <linux/ethtool.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
+/* WARNING only enabled on kernels with __ethtool_get_settings support */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) && \
+ LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
#define ethtool_link_ksettings batadv_ethtool_link_ksettings