dmaengine: fsldma: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

Fix the following warning (Building: powerpc-ppa8548_defconfig powerpc):

drivers/dma/fsldma.c: In function ‘fsl_dma_chan_probe’:
drivers/dma/fsldma.c:1165:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
   chan->toggle_ext_pause = fsl_chan_toggle_ext_pause;
   ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/dma/fsldma.c:1166:2: note: here
  case FSL_DMA_IP_83XX:
  ^~~~

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20190812002159.GA26899@embeddedor
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 23e0a356f16754083a981158a8a6bf2508e97e57..ad72b3f42ffa06d413b7d2f5a73a5faa00458a71 100644 (file)
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1163,6 +1163,7 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev,
        switch (chan->feature & FSL_DMA_IP_MASK) {
        case FSL_DMA_IP_85XX:
                chan->toggle_ext_pause = fsl_chan_toggle_ext_pause;
+               /* Fall through */
        case FSL_DMA_IP_83XX:
                chan->toggle_ext_start = fsl_chan_toggle_ext_start;
                chan->set_src_loop_size = fsl_chan_set_src_loop_size;