Commit 7f832645d0e5 ("dmaengine: ioatdma: remove ioatdma v2 registration") missed to remove dca2_tag_map_valid() during its removal. Hence, since then, dca2_tag_map_valid() is unused and make CC=clang W=1 warns: drivers/dma/ioat/dca.c:44:19: warning: unused function 'dca2_tag_map_valid' [-Wunused-function] So, remove this unused function and get rid of a -Wused-function warning. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx> --- applies cleanly on current master and next-20201112 Maciej, please ack. Vinod, Dan, please pick this minor non-urgent clean-up patch. drivers/dma/ioat/dca.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/dma/ioat/dca.c b/drivers/dma/ioat/dca.c index 0be385587c4c..289c59ed74b9 100644 --- a/drivers/dma/ioat/dca.c +++ b/drivers/dma/ioat/dca.c @@ -40,16 +40,6 @@ #define DCA2_TAG_MAP_BYTE3 0x82 #define DCA2_TAG_MAP_BYTE4 0x82 -/* verify if tag map matches expected values */ -static inline int dca2_tag_map_valid(u8 *tag_map) -{ - return ((tag_map[0] == DCA2_TAG_MAP_BYTE0) && - (tag_map[1] == DCA2_TAG_MAP_BYTE1) && - (tag_map[2] == DCA2_TAG_MAP_BYTE2) && - (tag_map[3] == DCA2_TAG_MAP_BYTE3) && - (tag_map[4] == DCA2_TAG_MAP_BYTE4)); -} - /* * "Legacy" DCA systems do not implement the DCA register set in the * I/OAT device. Software needs direct support for their tag mappings. -- 2.17.1