From cdfee5623290bc893f595636b44fa28e8207c5b3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 16 Aug 2019 08:24:35 +0200 Subject: driver core: initialize a default DMA mask for platform device We still treat devices without a DMA mask as defaulting to 32-bits for both mask, but a few releases ago we've started warning about such cases, as they require special cases to work around this sloppyness. Add a dma_mask field to struct platform_device so that we can initialize the dma_mask pointer in struct device and initialize both masks to 32-bits by default, replacing similar functionality in m68k and powerpc. The arch_setup_pdev_archdata hooks is now unused and removed. Note that the code looks a little odd with the various conditionals because we have to support platform_device structures that are statically allocated. Signed-off-by: Christoph Hellwig Acked-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20190816062435.881-7-hch@lst.de Signed-off-by: Greg Kroah-Hartman --- arch/m68k/kernel/dma.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'arch/m68k') diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c index 30cd59caf037..447849d1d645 100644 --- a/arch/m68k/kernel/dma.c +++ b/arch/m68k/kernel/dma.c @@ -79,12 +79,3 @@ void arch_sync_dma_for_device(struct device *dev, phys_addr_t handle, break; } } - -void arch_setup_pdev_archdata(struct platform_device *pdev) -{ - if (pdev->dev.coherent_dma_mask == DMA_MASK_NONE && - pdev->dev.dma_mask == NULL) { - pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; - } -} -- cgit v1.2.3