spi: Replace memset() with __GFP_ZERO

krealloc() as any other kernel memory allocation calls accepts GFP flags,
one of which is __GFP_ZERO. Hence, no need to call memset() explicitly on
the reallocated buffer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211122171721.61553-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 9d19d9bae253765d62ca4686268178d538ea38cc..3b9010a67397594ebca55a36918bda67ef8ae0ba 100644 (file)
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1222,11 +1222,10 @@ static int spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg)
 
                if (max_tx) {
                        tmp = krealloc(ctlr->dummy_tx, max_tx,
-                                      GFP_KERNEL | GFP_DMA);
+                                      GFP_KERNEL | GFP_DMA | __GFP_ZERO);
                        if (!tmp)
                                return -ENOMEM;
                        ctlr->dummy_tx = tmp;
-                       memset(tmp, 0, max_tx);
                }
 
                if (max_rx) {