dmaengine: avoid non-constant format string

Using an arbitrary string as a printf-style format can be a security
problem if that string contains % characters, as the optionalal
-Wformat-security flag points out:

drivers/dma/dmaengine.c: In function '__dma_async_device_channel_register':
drivers/dma/dmaengine.c:1073:17: error: format not a string literal and no format arguments [-Werror=format-security]
 1073 |                 dev_set_name(&chan->dev->device, name);
      |                 ^~~~~~~~~~~~

Change this newly added instance to use "%s" as the format instead to
pass the actual name.

Fixes: 10b8e0f ("dmaengine: add channel device name to channel registration")
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: arndb

drivers/dma/dmaengine.c

@@ -1070,7 +1070,7 @@ static int __dma_async_device_channel_register(struct dma_device *device,
 	if (!name)
 		dev_set_name(&chan->dev->device, "dma%dchan%d", device->dev_id, chan->chan_id);
 	else
-		dev_set_name(&chan->dev->device, name);
+		dev_set_name(&chan->dev->device, "%s", name);
 	rc = device_register(&chan->dev->device);
 	if (rc)
 		goto err_out_ida;