* [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
@ 2014-11-06 17:07 Frediano Ziglio
0 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2014-11-06 17:07 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk, Boris Ostrovsky, David Vrabel, frediano.ziglio
Cc: xen-devel, linux-kernel
On ARM error code is not 0 so avoid to return it as error.
Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
---
drivers/xen/swiotlb-xen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index ebd8f21..3b8d628 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
*/
if (!dma_capable(dev, dev_addr, size)) {
swiotlb_tbl_unmap_single(dev, map, size, dir);
- dev_addr = 0;
+ dev_addr = DMA_ERROR_CODE;
}
return dev_addr;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-07 14:45 ` [Xen-devel] " Konrad Rzeszutek Wilk
@ 2014-11-10 9:27 ` Frediano Ziglio
0 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2014-11-10 9:27 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk, Stefano Stabellini
Cc: xen-devel, Boris Ostrovsky, David Vrabel, Frediano Ziglio, linux-kernel
> On Thu, Nov 06, 2014 at 07:14:51PM +0000, Stefano Stabellini wrote:
> > On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > > 2014-11-06 17:30 GMT+00:00 Stefano Stabellini
> <stefano.stabellini@eu.citrix.com>:
> > > On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > > > On ARM error code is not 0 so avoid to return it as error.
> > > >
> > > > Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
> > >
> > > Acked-by: Stefano Stabellini
> > > <stefano.stabellini@eu.citrix.com>
> > >
> > >
> > > Could you please fix the same error in lib/swiotlb.c too
> please?
> > >
> > >
> > > Same patch or another ?
> > >
> >
> > Another
>
> It might break the build. Please double-check that it does not affect
> ia64.
> >
Code in lin/swiotlb.c does not require any changes as the error value is completely different here (is the pa address of a static allocated buffer). On ia64 the constant I used in my previous patch is 0 so it produce the same assembly code.
Frediano
> > >
> > > > drivers/xen/swiotlb-xen.c | 2 +-
> > > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/xen/swiotlb-xen.c
> b/drivers/xen/swiotlb-xen.c
> > > > index ebd8f21..3b8d628 100644
> > > > --- a/drivers/xen/swiotlb-xen.c
> > > > +++ b/drivers/xen/swiotlb-xen.c
> > > > @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct
> device *dev, struct page *page,
> > > > */
> > > > if (!dma_capable(dev, dev_addr, size)) {
> > > > swiotlb_tbl_unmap_single(dev, map, size, dir);
> > > > - dev_addr = 0;
> > > > + dev_addr = DMA_ERROR_CODE;
>
> That looks Ok to me.
>
> > > > }
> > > > return dev_addr;
> > > > }
> > > > --
> > > > 1.9.1
> > > >
> > > >
> > > > --
> > > > To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in
> > > > the body of a message to majordomo@vger.kernel.org
> > > > More majordomo info at http://vger.kernel.org/majordomo-
> info.html
> > > > Please read the FAQ at http://secure-
> web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-
> FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCq
> > > kCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-
> Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Fl
> kml%2F
> > > >
> > >
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@lists.xen.org
> > > http://lists.xen.org/xen-devel
> > >
> > >
> > >
> > >
>
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-06 19:14 ` [Xen-devel] " Stefano Stabellini
2014-11-07 9:56 ` Frediano Ziglio
2014-11-07 14:45 ` [Xen-devel] " Konrad Rzeszutek Wilk
@ 2014-11-07 14:45 ` Konrad Rzeszutek Wilk
2 siblings, 0 replies; 9+ messages in thread
From: Konrad Rzeszutek Wilk @ 2014-11-07 14:45 UTC (permalink / raw)
To: Stefano Stabellini
Cc: linux-kernel, Frediano Ziglio, David Vrabel, xen-devel,
Boris Ostrovsky, Frediano Ziglio
On Thu, Nov 06, 2014 at 07:14:51PM +0000, Stefano Stabellini wrote:
> On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > 2014-11-06 17:30 GMT+00:00 Stefano Stabellini <stefano.stabellini@eu.citrix.com>:
> > On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > > On ARM error code is not 0 so avoid to return it as error.
> > >
> > > Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
> >
> > Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> >
> >
> > Could you please fix the same error in lib/swiotlb.c too please?
> >
> >
> > Same patch or another ?
> >
>
> Another
It might break the build. Please double-check that it does not affect
ia64.
>
> >
> > > drivers/xen/swiotlb-xen.c | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> > > index ebd8f21..3b8d628 100644
> > > --- a/drivers/xen/swiotlb-xen.c
> > > +++ b/drivers/xen/swiotlb-xen.c
> > > @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
> > > */
> > > if (!dma_capable(dev, dev_addr, size)) {
> > > swiotlb_tbl_unmap_single(dev, map, size, dir);
> > > - dev_addr = 0;
> > > + dev_addr = DMA_ERROR_CODE;
That looks Ok to me.
> > > }
> > > return dev_addr;
> > > }
> > > --
> > > 1.9.1
> > >
> > >
> > > --
> > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > > the body of a message to majordomo@vger.kernel.org
> > > More majordomo info at http://vger.kernel.org/majordomo-info.html
> > > Please read the FAQ at http://secure-web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCq
> > kCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Flkml%2F
> > >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
> >
> >
> >
> >
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-06 19:14 ` [Xen-devel] " Stefano Stabellini
@ 2014-11-07 9:56 ` Frediano Ziglio
2014-11-07 14:45 ` [Xen-devel] " Konrad Rzeszutek Wilk
2014-11-07 14:45 ` Konrad Rzeszutek Wilk
2 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2014-11-07 9:56 UTC (permalink / raw)
To: Stefano Stabellini, Frediano Ziglio
Cc: xen-devel, Boris Ostrovsky, David Vrabel, linux-kernel
> On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > 2014-11-06 17:30 GMT+00:00 Stefano Stabellini
> <stefano.stabellini@eu.citrix.com>:
> > On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > > On ARM error code is not 0 so avoid to return it as error.
> > >
> > > Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
> >
> > Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> >
> >
> > Could you please fix the same error in lib/swiotlb.c too please?
> >
> >
> > Same patch or another ?
> >
>
> Another
>
lib/swiotlb.c is not affected at a physical address to io_tlb_overflow_buffer is returned in case of error.
Looks like a way to transform silently an allocation error to a more serious memory corruption.
Frediano
> >
> > > drivers/xen/swiotlb-xen.c | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-
> xen.c
> > > index ebd8f21..3b8d628 100644
> > > --- a/drivers/xen/swiotlb-xen.c
> > > +++ b/drivers/xen/swiotlb-xen.c
> > > @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct
> device *dev, struct page *page,
> > > */
> > > if (!dma_capable(dev, dev_addr, size)) {
> > > swiotlb_tbl_unmap_single(dev, map, size, dir);
> > > - dev_addr = 0;
> > > + dev_addr = DMA_ERROR_CODE;
> > > }
> > > return dev_addr;
> > > }
> > > --
> > > 1.9.1
> > >
> > >
> > > --
> > > To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in
> > > the body of a message to majordomo@vger.kernel.org
> > > More majordomo info at http://vger.kernel.org/majordomo-
> info.html
> > > Please read the FAQ at http://secure-
> web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-
> FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCq
> > kCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-
> Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Fl
> kml%2F
> > >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
> >
> >
> >
> >
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-06 19:05 ` Frediano Ziglio
@ 2014-11-06 19:14 ` Stefano Stabellini
2014-11-06 19:14 ` [Xen-devel] " Stefano Stabellini
1 sibling, 0 replies; 9+ messages in thread
From: Stefano Stabellini @ 2014-11-06 19:14 UTC (permalink / raw)
To: Frediano Ziglio
Cc: Stefano Stabellini, linux-kernel, Frediano Ziglio, David Vrabel,
xen-devel, Boris Ostrovsky
[-- Attachment #1: Type: text/plain, Size: 2087 bytes --]
On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> 2014-11-06 17:30 GMT+00:00 Stefano Stabellini <stefano.stabellini@eu.citrix.com>:
> On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > On ARM error code is not 0 so avoid to return it as error.
> >
> > Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
>
> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
>
>
> Could you please fix the same error in lib/swiotlb.c too please?
>
>
> Same patch or another ?
>
Another
>
> > drivers/xen/swiotlb-xen.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> > index ebd8f21..3b8d628 100644
> > --- a/drivers/xen/swiotlb-xen.c
> > +++ b/drivers/xen/swiotlb-xen.c
> > @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
> > */
> > if (!dma_capable(dev, dev_addr, size)) {
> > swiotlb_tbl_unmap_single(dev, map, size, dir);
> > - dev_addr = 0;
> > + dev_addr = DMA_ERROR_CODE;
> > }
> > return dev_addr;
> > }
> > --
> > 1.9.1
> >
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at http://secure-web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCq
> kCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Flkml%2F
> >
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
>
>
>
>
[-- Attachment #2: Type: text/plain, Size: 126 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-06 17:30 ` Stefano Stabellini
@ 2014-11-06 19:05 ` Frediano Ziglio
2014-11-06 19:14 ` Stefano Stabellini
2014-11-06 19:14 ` [Xen-devel] " Stefano Stabellini
0 siblings, 2 replies; 9+ messages in thread
From: Frediano Ziglio @ 2014-11-06 19:05 UTC (permalink / raw)
To: Stefano Stabellini
Cc: Frediano Ziglio, xen-devel, Boris Ostrovsky, David Vrabel, linux-kernel
[-- Attachment #1.1: Type: text/plain, Size: 1705 bytes --]
2014-11-06 17:30 GMT+00:00 Stefano Stabellini <
stefano.stabellini@eu.citrix.com>:
> On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> > On ARM error code is not 0 so avoid to return it as error.
> >
> > Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
>
> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
>
>
> Could you please fix the same error in lib/swiotlb.c too please?
>
>
Same patch or another ?
Frediano
> > drivers/xen/swiotlb-xen.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> > index ebd8f21..3b8d628 100644
> > --- a/drivers/xen/swiotlb-xen.c
> > +++ b/drivers/xen/swiotlb-xen.c
> > @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev,
> struct page *page,
> > */
> > if (!dma_capable(dev, dev_addr, size)) {
> > swiotlb_tbl_unmap_single(dev, map, size, dir);
> > - dev_addr = 0;
> > + dev_addr = DMA_ERROR_CODE;
> > }
> > return dev_addr;
> > }
> > --
> > 1.9.1
> >
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel"
> in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at
> http://secure-web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCqkCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Flkml%2F
> >
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
>
[-- Attachment #1.2: Type: text/html, Size: 3235 bytes --]
[-- Attachment #2: Type: text/plain, Size: 126 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-06 17:07 Frediano Ziglio
@ 2014-11-06 17:30 ` Stefano Stabellini
2014-11-06 19:05 ` Frediano Ziglio
2014-11-06 17:30 ` Stefano Stabellini
1 sibling, 1 reply; 9+ messages in thread
From: Stefano Stabellini @ 2014-11-06 17:30 UTC (permalink / raw)
To: Frediano Ziglio
Cc: Konrad Rzeszutek Wilk, Boris Ostrovsky, David Vrabel, xen-devel,
linux-kernel
On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> On ARM error code is not 0 so avoid to return it as error.
>
> Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Could you please fix the same error in lib/swiotlb.c too please?
> drivers/xen/swiotlb-xen.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> index ebd8f21..3b8d628 100644
> --- a/drivers/xen/swiotlb-xen.c
> +++ b/drivers/xen/swiotlb-xen.c
> @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
> */
> if (!dma_capable(dev, dev_addr, size)) {
> swiotlb_tbl_unmap_single(dev, map, size, dir);
> - dev_addr = 0;
> + dev_addr = DMA_ERROR_CODE;
> }
> return dev_addr;
> }
> --
> 1.9.1
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://secure-web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCqkCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Flkml%2F
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
2014-11-06 17:07 Frediano Ziglio
2014-11-06 17:30 ` Stefano Stabellini
@ 2014-11-06 17:30 ` Stefano Stabellini
1 sibling, 0 replies; 9+ messages in thread
From: Stefano Stabellini @ 2014-11-06 17:30 UTC (permalink / raw)
To: Frediano Ziglio; +Cc: xen-devel, Boris Ostrovsky, David Vrabel, linux-kernel
On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> On ARM error code is not 0 so avoid to return it as error.
>
> Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Could you please fix the same error in lib/swiotlb.c too please?
> drivers/xen/swiotlb-xen.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> index ebd8f21..3b8d628 100644
> --- a/drivers/xen/swiotlb-xen.c
> +++ b/drivers/xen/swiotlb-xen.c
> @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
> */
> if (!dma_capable(dev, dev_addr, size)) {
> swiotlb_tbl_unmap_single(dev, map, size, dir);
> - dev_addr = 0;
> + dev_addr = DMA_ERROR_CODE;
> }
> return dev_addr;
> }
> --
> 1.9.1
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://secure-web.cisco.com/1cvjROyUxV6SnA0uBTMRubqrQWsaXGhps-FWjY3vly9AxaKKlt2DPY7GjL0FCHeP4rsbjKsc-P4zH2_7-kpcxwEH-udGrGCCqkCLlH1-fLOo1X6Nlui6EwEVHUpB2r7gt-Gsgxbep9QWPnIdypDPNf8Hf5clxCMXYcvWsOK5s3qg/http%3A%2F%2Fwww.tux.org%2Flkml%2F
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page
@ 2014-11-06 17:07 Frediano Ziglio
2014-11-06 17:30 ` Stefano Stabellini
2014-11-06 17:30 ` Stefano Stabellini
0 siblings, 2 replies; 9+ messages in thread
From: Frediano Ziglio @ 2014-11-06 17:07 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk, Boris Ostrovsky, David Vrabel, frediano.ziglio
Cc: xen-devel, linux-kernel
On ARM error code is not 0 so avoid to return it as error.
Signed-off-by: Frediano Ziglio <frediano.ziglio@huawei.com>
---
drivers/xen/swiotlb-xen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index ebd8f21..3b8d628 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
*/
if (!dma_capable(dev, dev_addr, size)) {
swiotlb_tbl_unmap_single(dev, map, size, dir);
- dev_addr = 0;
+ dev_addr = DMA_ERROR_CODE;
}
return dev_addr;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
end of thread, other threads:[~2014-11-10 9:28 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-11-06 17:07 [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page Frediano Ziglio
2014-11-06 17:07 Frediano Ziglio
2014-11-06 17:30 ` Stefano Stabellini
2014-11-06 19:05 ` Frediano Ziglio
2014-11-06 19:14 ` Stefano Stabellini
2014-11-06 19:14 ` [Xen-devel] " Stefano Stabellini
2014-11-07 9:56 ` Frediano Ziglio
2014-11-07 14:45 ` [Xen-devel] " Konrad Rzeszutek Wilk
2014-11-10 9:27 ` Frediano Ziglio
2014-11-07 14:45 ` Konrad Rzeszutek Wilk
2014-11-06 17:30 ` Stefano Stabellini
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