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authorChristoph Hellwig <hch@lst.de>2019-08-16 09:24:35 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-22 19:41:55 +0300
commitcdfee5623290bc893f595636b44fa28e8207c5b3 (patch)
treea768872b88b20932895fcc1d82704dda4eb56924 /include/linux/platform_device.h
parentbd5defaee872da9b81e3c72045eb6794445cd2e6 (diff)
downloadlinux-cdfee5623290bc893f595636b44fa28e8207c5b3.tar.xz
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 <hch@lst.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/r/20190816062435.881-7-hch@lst.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/platform_device.h')
-rw-r--r--include/linux/platform_device.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9bc36b589827..34a3d8ed8ba7 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -24,6 +24,7 @@ struct platform_device {
int id;
bool id_auto;
struct device dev;
+ u64 dma_mask;
u32 num_resources;
struct resource *resource;
@@ -48,7 +49,6 @@ extern void platform_device_unregister(struct platform_device *);
extern struct bus_type platform_bus_type;
extern struct device platform_bus;
-extern void arch_setup_pdev_archdata(struct platform_device *);
extern struct resource *platform_get_resource(struct platform_device *,
unsigned int, unsigned int);
extern void __iomem *