dmaengine: pl08x: constify pointer to char in filter function

The opaque argument chan_id passed to filter function is actually
pointer to const memory, so make that obvious in the filter for code
readability and safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240208202742.631307-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index eea8bd33b4b7385d0fd21dad5583588c7de3556f..fbf048f432bf8f16d5b97b88b4c02851367d9924 100644 (file)
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -2239,7 +2239,7 @@ static int pl08x_resume(struct dma_chan *chan)
 bool pl08x_filter_id(struct dma_chan *chan, void *chan_id)
 {
        struct pl08x_dma_chan *plchan;
-       char *name = chan_id;
+       const char *name = chan_id;
 
        /* Reject channels for devices not bound to this driver */
        if (chan->device->dev->driver != &pl08x_amba_driver.drv)