dmaengine: ste_dma40_ll: Replace meaningless register set with comment

Unsure of the author's intentions, rather than just removing the nop,
we're replacing it with a comment containing the possible intention
of the statement OR:ing with 0.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/dma/ste_dma40_ll.c b/drivers/dma/ste_dma40_ll.c
index a035dfeab6cb..27b818dee7c7 100644
--- a/drivers/dma/ste_dma40_ll.c
+++ b/drivers/dma/ste_dma40_ll.c
@@ -182,8 +182,10 @@ static int d40_phy_fill_lli(struct d40_phy_lli *lli,
         else
                 lli->reg_cfg &= ~BIT(D40_SREG_CFG_TIM_POS);
 
-        /* Post link */
-        lli->reg_lnk |= 0 << D40_SREG_LNK_PHY_PRE_POS;
+        /*
+         * Post link - D40_SREG_LNK_PHY_PRE_POS = 0
+         * Relink happens after transfer completion.
+         */
 
         return 0;
 }