Merge remote-tracking branch 'md/for-next'

[karo-tx-linux.git] / drivers / net / ethernet / sfc / io.h

diff --git a/drivers/net/ethernet/sfc/io.h b/drivers/net/ethernet/sfc/io.h
index 96ce507d8602eb4a8f40a7cfa034f5cf3dede3c3..4d3f119b67b38ec35719ebac40d59f49ea9b844f 100644 (file)
--- a/drivers/net/ethernet/sfc/io.h
+++ b/drivers/net/ethernet/sfc/io.h
@@ -66,6 +66,11 @@
 #define EFX_USE_QWORD_IO 1
 #endif
 
+/* PIO is a win only if write-combining is possible */
+#ifdef ARCH_HAS_IOREMAP_WC
+#define EFX_USE_PIO 1
+#endif
+
 #ifdef EFX_USE_QWORD_IO
 static inline void _efx_writeq(struct efx_nic *efx, __le64 value,
                                  unsigned int reg)