From: Christoph Hellwig <hch@lst.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Gavin Li <git@thegavinli.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Minas Harutyunyan <hminas@synopsys.com>,
Alan Stern <stern@rowland.harvard.edu>,
Geoff Levand <geoff@infradead.org>,
Michal Simek <michal.simek@xilinx.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Olav Kongas <ok@artecdesign.ee>,
Tony Prisk <linux@prisktech.co.nz>,
Mathias Nyman <mathias.nyman@intel.com>, Bin Liu <b-liu@ti.com>,
linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/6] usb: don't create dma pools for HCDs with a localmem_pool
Date: Sun, 11 Aug 2019 10:05:15 +0200 [thread overview]
Message-ID: <20190811080520.21712-2-hch@lst.de> (raw)
In-Reply-To: <20190811080520.21712-1-hch@lst.de>
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
next prev parent reply other threads:[~2019-08-11 8:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-11 8:05 next take at setting up a dma mask by default for platform devices Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig [this message]
2019-08-11 8:05 ` [PATCH 2/6] usb: add a hcd_uses_dma helper Christoph Hellwig
2019-08-11 8:05 ` [PATCH 3/6] usb: add a HCD_DMA flag instead of guestimating DMA capabilities Christoph Hellwig
2019-08-12 11:57 ` Christoph Hellwig
2019-08-11 8:05 ` [PATCH 4/6] usb/max3421: remove the dummy {un,}map_urb_for_dma methods Christoph Hellwig
2019-08-11 8:05 ` [PATCH 5/6] dma-mapping: remove is_device_dma_capable Christoph Hellwig
2019-08-11 8:05 ` [PATCH 6/6] driver core: initialize a default DMA mask for platform device Christoph Hellwig
2019-08-14 15:49 ` Robin Murphy
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 13:23 ` next take at setting up a dma mask by default for platform devices Greg Kroah-Hartman
2019-08-15 13:25 ` Christoph Hellwig
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:39 ` Alan Stern
2019-08-16 6:24 next take at setting up a dma mask by default for platform devices v2 Christoph Hellwig
2019-08-16 6:24 ` [PATCH 1/6] usb: don't create dma pools for HCDs with a localmem_pool Christoph Hellwig
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