Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dd3ecf17 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Greg Kroah-Hartman
Browse files

usb: don't create dma pools for HCDs with a localmem_pool 



If the HCD provides a localmem pool we will never use the DMA pools, so
don't create them.

Fixes: b0310c2f ("USB: use genalloc for USB HCs with local memory")
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20190811080520.21712-2-hch@lst.de


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 141822aa

drivers/usb/core/buffer.c

+3 −3
Original line number Diff line number Diff line
@@ -66,9 +66,9 @@ int hcd_buffer_create(struct usb_hcd *hcd) 
	char		name[16];

	int		i, size;



	if (!IS_ENABLED(CONFIG_HAS_DMA) ||

	    (!is_device_dma_capable(hcd->self.sysdev) &&

	     !hcd->localmem_pool))

	if (hcd->localmem_pool ||

	    !IS_ENABLED(CONFIG_HAS_DMA) ||

	    !is_device_dma_capable(hcd->self.sysdev))

		return 0;



	for (i = 0; i < HCD_BUFFER_POOLS; i++) {