From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 6/8] apbh: Use dma_alloc_coherent() to get DMA address
Date: Mon, 27 May 2019 11:14:58 -0700 [thread overview]
Message-ID: <20190527181500.17456-6-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190527181500.17456-1-andrew.smirnov@gmail.com>
Avoid converting virtual address to physical by simple casting by
making use of the fact that dma_alloc_coherent() can already return
that information to us.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
drivers/dma/apbh_dma.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/apbh_dma.c b/drivers/dma/apbh_dma.c
index 15a523ac8..3bee89f78 100644
--- a/drivers/dma/apbh_dma.c
+++ b/drivers/dma/apbh_dma.c
@@ -381,14 +381,15 @@ static int mxs_dma_release(int channel)
struct mxs_dma_desc *mxs_dma_desc_alloc(void)
{
struct mxs_dma_desc *pdesc;
+ dma_addr_t dma_address;
pdesc = dma_alloc_coherent(sizeof(struct mxs_dma_desc),
- DMA_ADDRESS_BROKEN);
+ &dma_address);
if (pdesc == NULL)
return NULL;
- pdesc->address = (dma_addr_t)pdesc;
+ pdesc->address = dma_address;
return pdesc;
};
--
2.21.0
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2019-05-27 18:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 18:14 [PATCH 1/8] usb: ohci-hcd: Do not zero out DMA coherent memory Andrey Smirnov
2019-05-27 18:14 ` [PATCH 2/8] net: rtl8169: " Andrey Smirnov
2019-05-27 18:14 ` [PATCH 3/8] nand: nand_mxs: " Andrey Smirnov
2019-05-27 18:14 ` [PATCH 4/8] apbh: " Andrey Smirnov
2019-05-27 18:14 ` [PATCH 5/8] ahci: " Andrey Smirnov
2019-05-27 18:14 ` Andrey Smirnov [this message]
2019-05-27 18:14 ` [PATCH 7/8] usb: fsl_udc: Use dma_alloc_coherent() to get DMA address Andrey Smirnov
2019-05-27 18:15 ` [PATCH 8/8] usb: ohci: Add dependency on HAS_DMA Andrey Smirnov
2019-05-28 8:38 ` [PATCH 1/8] usb: ohci-hcd: Do not zero out DMA coherent memory Sascha Hauer
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=20190527181500.17456-6-andrew.smirnov@gmail.com \
--to=andrew.smirnov@gmail.com \
--cc=barebox@lists.infradead.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox