diff mbox

dma-mapping: fix size when of_dma_get_range() fails

Message ID 1419458210-4079-1-git-send-email-m-karicheri2@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Murali Karicheri Dec. 24, 2014, 9:56 p.m. UTC
When call to of_dma_get_range() fails, the code currently set size
to dev->coherent_dma_mask instead of dev->coherent_dma_mask + 1. Fix this
to make the code consistent with the case when size is obtained from
dma-range property.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/of/platform.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Grant Likely March 19, 2015, 7:25 p.m. UTC | #1
On Wed, 24 Dec 2014 16:56:50 -0500
, Murali Karicheri <m-karicheri2@ti.com>
 wrote:
> When call to of_dma_get_range() fails, the code currently set size
> to dev->coherent_dma_mask instead of dev->coherent_dma_mask + 1. Fix this
> to make the code consistent with the case when size is obtained from
> dma-range property.
> 
> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
> Reviewed-by: Arnd Bergmann <arnd@arndb.de>

Looks okay to me. I've merged it into my tree.

g.

> ---
>  drivers/of/platform.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/of/platform.c b/drivers/of/platform.c
> index a54ec10..af9aef1 100644
> --- a/drivers/of/platform.c
> +++ b/drivers/of/platform.c
> @@ -185,7 +185,7 @@ static void of_dma_configure(struct device *dev)
>  	ret = of_dma_get_range(dev->of_node, &dma_addr, &paddr, &size);
>  	if (ret < 0) {
>  		dma_addr = offset = 0;
> -		size = dev->coherent_dma_mask;
> +		size = dev->coherent_dma_mask + 1;
>  	} else {
>  		offset = PFN_DOWN(paddr - dma_addr);
>  		dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset);
> -- 
> 1.7.9.5
>
Grant Likely March 20, 2015, 11:54 a.m. UTC | #2
On Thu, Mar 19, 2015 at 7:25 PM, Grant Likely <grant.likely@linaro.org> wrote:
> On Wed, 24 Dec 2014 16:56:50 -0500
> , Murali Karicheri <m-karicheri2@ti.com>
>  wrote:
>> When call to of_dma_get_range() fails, the code currently set size
>> to dev->coherent_dma_mask instead of dev->coherent_dma_mask + 1. Fix this
>> to make the code consistent with the case when size is obtained from
>> dma-range property.
>>
>> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
>> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
>
> Looks okay to me. I've merged it into my tree.

Oops, never mind. I see that it's been rolled into the series going
through Bjorn's tree. Sorry for the noise.

g.
diff mbox

Patch

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index a54ec10..af9aef1 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -185,7 +185,7 @@  static void of_dma_configure(struct device *dev)
 	ret = of_dma_get_range(dev->of_node, &dma_addr, &paddr, &size);
 	if (ret < 0) {
 		dma_addr = offset = 0;
-		size = dev->coherent_dma_mask;
+		size = dev->coherent_dma_mask + 1;
 	} else {
 		offset = PFN_DOWN(paddr - dma_addr);
 		dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset);