linux-kernel - [PATCH v3 2/3] spi: Replace memset() with __GFP

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Message-Id: <20211123170034.41253-2-andriy.shevchenko@linux.intel.com>
Date:   Tue, 23 Nov 2021 19:00:33 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v3 2/3] 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@...ux.intel.com>
---
v3: no changes
 drivers/spi/spi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 15688acc952c..2e6e4b3ca96e 100644
--- 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) {
-- 
2.33.0