7b81cb6bdd
The usb core is the only major place in the kernel that checks for a non-NULL device dma_mask to see if a device is DMA capable. This is generally a bad idea, as all major busses always set up a DMA mask, even if the device is not DMA capable - in fact bus layers like PCI can't even know if a device is DMA capable at enumeration time. This leads to lots of workaround in HCD drivers, and also prevented us from setting up a DMA mask for platform devices by default last time we tried. Replace this guess with an explicit HCD_DMA that is set by drivers that appear to have DMA support. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20190816062435.881-4-hch@lst.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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.. | ||
Kconfig | ||
Makefile | ||
am35x.c | ||
cppi_dma.c | ||
cppi_dma.h | ||
da8xx.c | ||
davinci.c | ||
davinci.h | ||
jz4740.c | ||
musb_am335x.c | ||
musb_core.c | ||
musb_core.h | ||
musb_cppi41.c | ||
musb_debug.h | ||
musb_debugfs.c | ||
musb_dma.h | ||
musb_dsps.c | ||
musb_gadget.c | ||
musb_gadget.h | ||
musb_gadget_ep0.c | ||
musb_host.c | ||
musb_host.h | ||
musb_io.h | ||
musb_regs.h | ||
musb_trace.c | ||
musb_trace.h | ||
musb_virthub.c | ||
musbhsdma.c | ||
omap2430.c | ||
omap2430.h | ||
sunxi.c | ||
tusb6010.c | ||
tusb6010.h | ||
tusb6010_omap.c | ||
ux500.c | ||
ux500_dma.c |