--- /dev/null
+Serial ioctl() workaround
+
+The ioctls.h of some architectures (notably xtensa) references structs from
+linux/serial.h. Make sure to include this header as well.
+
+Also, undef TIOCTTYGSTRUCT that require reference to internal kernel tty_struct,
+but isn't actually referenced in modern kernels.
+
+Signed-off-by: Baruch Siach <baruch@tkos.co.il>
+---
+Index: b/Modules/termios.c
+===================================================================
+--- a/Modules/termios.c
++++ b/Modules/termios.c
+@@ -9,7 +9,9 @@
+ #endif
+
+ #include <termios.h>
++#include <linux/serial.h>
+ #include <sys/ioctl.h>
++#undef TIOCTTYGSTRUCT
+
+ /* HP-UX requires that this be included to pick up MDCD, MCTS, MDSR,
+ * MDTR, MRI, and MRTS (appearantly used internally by some things