From 0de4df5ba2ad3f3c46d2c079f3a76c69d71800be Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Date: Fri, 27 Jan 2017 19:52:37 +0200 Subject: [PATCH] ath10k: use dma_zalloc_coherent() use dma_zalloc_coherent() instead of dma_alloc_coherent and memset(). Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com> --- drivers/net/wireless/ath/ath10k/ce.c | 9 +-------- drivers/net/wireless/ath/ath10k/pci.c | 3 +-- 2 files changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index c04e68796a208..da466ab2d823e 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -958,7 +958,7 @@ ath10k_ce_alloc_dest_ring(struct ath10k *ar, unsigned int ce_id, * coherent DMA are unsupported */ dest_ring->base_addr_owner_space_unaligned = - dma_alloc_coherent(ar->dev, + dma_zalloc_coherent(ar->dev, (nentries * sizeof(struct ce_desc) + CE_DESC_RING_ALIGN), &base_addr, GFP_KERNEL); @@ -969,13 +969,6 @@ ath10k_ce_alloc_dest_ring(struct ath10k *ar, unsigned int ce_id, dest_ring->base_addr_ce_space_unaligned = base_addr; - /* - * Correctly initialize memory to 0 to prevent garbage - * data crashing system when download firmware - */ - memset(dest_ring->base_addr_owner_space_unaligned, 0, - nentries * sizeof(struct ce_desc) + CE_DESC_RING_ALIGN); - dest_ring->base_addr_owner_space = PTR_ALIGN( dest_ring->base_addr_owner_space_unaligned, CE_DESC_RING_ALIGN); diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 95ccd6db76237..8f0d518bca46c 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -896,7 +896,7 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, */ alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT); - data_buf = (unsigned char *)dma_alloc_coherent(ar->dev, + data_buf = (unsigned char *)dma_zalloc_coherent(ar->dev, alloc_nbytes, &ce_data_base, GFP_ATOMIC); @@ -905,7 +905,6 @@ static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, ret = -ENOMEM; goto done; } - memset(data_buf, 0, alloc_nbytes); remaining_bytes = nbytes; ce_data = ce_data_base; -- 2.30.2