From 750afb08ca71310fcf0c4e2cb1565c63b8235b60 Mon Sep 17 00:00:00 2001 From: Luis Chamberlain Date: Fri, 4 Jan 2019 09:23:09 +0100 Subject: cross-tree: phase out dma_zalloc_coherent() We already need to zero out memory for dma_alloc_coherent(), as such using dma_zalloc_coherent() is superflous. Phase it out. This change was generated with the following Coccinelle SmPL patch: @ replace_dma_zalloc_coherent @ expression dev, size, data, handle, flags; @@ -dma_zalloc_coherent(dev, size, handle, flags) +dma_alloc_coherent(dev, size, handle, flags) Suggested-by: Christoph Hellwig Signed-off-by: Luis Chamberlain [hch: re-ran the script on the latest tree] Signed-off-by: Christoph Hellwig --- include/linux/pci-dma-compat.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci-dma-compat.h b/include/linux/pci-dma-compat.h index cb1adf0b78a9..249d4d7fbf18 100644 --- a/include/linux/pci-dma-compat.h +++ b/include/linux/pci-dma-compat.h @@ -24,7 +24,7 @@ static inline void * pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle) { - return dma_zalloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC); + return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC); } static inline void -- cgit v1.2.3 From dfd32cad146e3624970eee9329e99d2c6ef751b3 Mon Sep 17 00:00:00 2001 From: Luis Chamberlain Date: Wed, 19 Dec 2018 12:30:34 -0800 Subject: dma-mapping: remove dma_zalloc_coherent() dma_zalloc_coherent() is no longer needed as it has no users because dma_alloc_coherent() already zeroes out memory for us. The Coccinelle grammar rule that used to check for dma_alloc_coherent() + memset() is modified so that it just tells the user that the memset is not needed anymore. Suggested-by: Christoph Hellwig Signed-off-by: Luis Chamberlain Signed-off-by: Christoph Hellwig --- include/linux/dma-mapping.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index cef2127e1d70..f6ded992c183 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -717,15 +717,6 @@ static inline unsigned long dma_max_pfn(struct device *dev) } #endif -/* - * Please always use dma_alloc_coherent instead as it already zeroes the memory! - */ -static inline void *dma_zalloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) -{ - return dma_alloc_coherent(dev, size, dma_handle, flag); -} - static inline int dma_get_cache_alignment(void) { #ifdef ARCH_DMA_MINALIGN -- cgit v1.2.3