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[2001:16b8:26a1:1f00:b9fa:8830:9553:62e6]) by smtp.gmail.com with ESMTPSA id u16-20020a5d5150000000b0021e529efa60sm49206wrt.1.2022.07.20.12.02.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Jul 2022 12:02:20 -0700 (PDT) From: Lukas Bulwahn To: Russell King , Christoph Hellwig , Arnd Bergmann , linux-arm-kernel@lists.infradead.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Lukas Bulwahn Subject: [PATCH] dma-mapping: update comment after dmabounce removal Date: Wed, 20 Jul 2022 21:02:08 +0200 Message-Id: <20220720190208.11270-1-lukas.bulwahn@gmail.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220720_120225_130504_80B8E714 X-CRM114-Status: GOOD ( 15.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Commit e3217540c271 ("ARM/dma-mapping: remove dmabounce") removes the config DMABOUNCE. A comment to the function __dma_page_cpu_to_dev() refers to this removed config DMABOUNCE. Remove the obsolete explanation, but keep the recommendation not to use __dma_page_cpu_to_dev() and use dma_sync_* functions instead. Signed-off-by: Lukas Bulwahn Acked-by: Arnd Bergmann --- arch/arm/mm/dma-mapping.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index e68d1d2ac4be..16c2cdd04639 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -679,8 +679,7 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset, /* * Make an area consistent for devices. - * Note: Drivers should NOT use this function directly, as it will break - * platforms with CONFIG_DMABOUNCE. + * Note: Drivers should NOT use this function directly. * Use the driver DMA support - see dma-mapping.h (dma_sync_*) */ static void __dma_page_cpu_to_dev(struct page *page, unsigned long off,