EDAC/ie31200: #undef field_get() before local definition

Prepare for the advent of a globally available common field_get() macro
by undefining the symbol before defining a local variant.  This prevents
redefinition warnings from the C preprocessor when introducing the common
macro later.

Suggested-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>

diff --git a/drivers/edac/ie31200_edac.c b/drivers/edac/ie31200_edac.c
index 5a080ab65476dacf263447b456c90b34fdac9a6c..72290f430126c631b45c65d95d25ed66fdc45af8 100644 (file)
--- a/drivers/edac/ie31200_edac.c
+++ b/drivers/edac/ie31200_edac.c
@@ -140,6 +140,7 @@
 #define IE31200_CAPID0_ECC             BIT(1)
 
 /* Non-constant mask variant of FIELD_GET() */
+#undef field_get
 #define field_get(_mask, _reg)  (((_reg) & (_mask)) >> (ffs(_mask) - 1))
 
 static int nr_channels;