The helper function dma_chain_flag_bits is not being called from
anywhere, it is redundant and can be removed.

Cleans up clang scan build warning:
drivers/comedi/drivers/cb_pcidas64.c:377:28: warning: unused
function 'dma_chain_flag_bits' [-Wunused-function]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
---
 drivers/comedi/drivers/cb_pcidas64.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/comedi/drivers/cb_pcidas64.c b/drivers/comedi/drivers/cb_pcidas64.c
index ff19fc3859e4..d398c6df9482 100644
--- a/drivers/comedi/drivers/cb_pcidas64.c
+++ b/drivers/comedi/drivers/cb_pcidas64.c
@@ -374,11 +374,6 @@ static inline u16 pipe_full_bits(u16 hw_status_bits)
 	return (hw_status_bits >> 10) & 0x3;
 };
 
-static inline unsigned int dma_chain_flag_bits(u16 prepost_bits)
-{
-	return (prepost_bits >> 6) & 0x3;
-}
-
 static inline unsigned int adc_upper_read_ptr_code(u16 prepost_bits)
 {
 	return (prepost_bits >> 12) & 0x3;
-- 
2.39.2