ata: libahci: Remove call to memset after dmam_alloc_coherent

In commit af7ddd8a627c
("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"),
dmam_alloc_coherent has already zeroed the memory.
So memset is not needed.

Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 0984c4b..e4c45d3 100644 (file)
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -2365,7 +2365,6 @@ static int ahci_port_start(struct ata_port *ap)
        mem = dmam_alloc_coherent(dev, dma_sz, &mem_dma, GFP_KERNEL);
        if (!mem)
                return -ENOMEM;
-       memset(mem, 0, dma_sz);
 
        /*
         * First item in chunk of DMA memory: 32-slot command table,