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usb: don't create dma pools for HCDs with a localmem_pool
author
Christoph Hellwig
<hch@lst.de>
Sun, 11 Aug 2019 08:05:15 +0000
(10:05 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Thu, 15 Aug 2019 13:17:07 +0000
(15:17 +0200)
If the HCD provides a localmem pool we will never use the DMA pools, so
don't create them.
Fixes:
b0310c2f09bb
("USB: use genalloc for USB HCs with local memory")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link:
https://lore.kernel.org/r/20190811080520.21712-2-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/buffer.c
patch
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diff --git
a/drivers/usb/core/buffer.c
b/drivers/usb/core/buffer.c
index
1359b78
..
1a5b3dc
100644
(file)
--- a/
drivers/usb/core/buffer.c
+++ b/
drivers/usb/core/buffer.c
@@
-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++) {