[PATCH 1/6] usb: don't create dma pools for HCDs with a localmem_pool
From: Christoph Hellwig <hch@lst.de>
Date: 2019-08-16 06:29:10
Also in:
linux-arch, linux-iommu, linux-usb, linuxppc-dev, lkml
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
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>
---
drivers/usb/core/buffer.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index 1359b78a624e..1a5b3dcae930 100644
--- 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++) {
--
2.20.1
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