linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Baolin Wang <baolin.wang@linaro.org>
To: balbi@kernel.org, gregkh@linuxfoundation.org
Cc: broonie@kernel.org, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org, baolin.wang@linaro.org
Subject: [PATCH v2] usb: dwc3: host: Set the dma_ops for xhci device
Date: Mon,  6 Jun 2016 13:56:11 +0800	[thread overview]
Message-ID: <3f7a77848164a753b8918925f69aa0fd6c985850.1465192322.git.baolin.wang@linaro.org> (raw)

On ARM64 platform, it will set 'dummy_dma_ops' for device dma_ops if
it did not call 'arch_setup_dma_ops' at device creation time, that will
cause failure when setting the dma mask for device.

Thus this patch set the xhci device dma_ops from the parent device if
the xhci device dma_ops is 'dummy_dma_ops'.

Changes since v1:
 - Add CONFIG_ARM64 macro.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
 drivers/usb/dwc3/host.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index c679f63..edb666d 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -32,6 +32,11 @@ int dwc3_host_init(struct dwc3 *dwc)
 		return -ENOMEM;
 	}
 
+#ifdef CONFIG_ARM64
+	if (get_dma_ops(&xhci->dev) == get_dma_ops(NULL))
+		xhci->dev.archdata.dma_ops = get_dma_ops(dwc->dev);
+#endif
+
 	dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
 
 	xhci->dev.parent	= dwc->dev;
-- 
1.7.9.5

             reply	other threads:[~2016-06-06  5:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-06  5:56 Baolin Wang [this message]
2016-06-06 14:59 ` Felipe Balbi
2016-06-07  2:11   ` Baolin Wang
2016-06-08  8:18   ` Baolin Wang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=3f7a77848164a753b8918925f69aa0fd6c985850.1465192322.git.baolin.wang@linaro.org \
    --to=baolin.wang@linaro.org \
    --cc=balbi@kernel.org \
    --cc=broonie@kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --subject='Re: [PATCH v2] usb: dwc3: host: Set the dma_ops for xhci device' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).