* [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable
@ 2021-02-08 20:04 ` Jonathan Marek
2021-02-09 8:57 ` Marek Szyprowski
2021-02-10 16:36 ` Srinivas Kandagatla
0 siblings, 2 replies; 3+ messages in thread
From: Jonathan Marek @ 2021-02-08 20:04 UTC (permalink / raw)
To: linux-arm-msm
Cc: Arnd Bergmann, Greg Kroah-Hartman, Marek Szyprowski, open list
dma_map_sgtable() returns 0 on success, which is the opposite of what this
code was doing.
Fixes: 7cd7edb89437 ("misc: fastrpc: fix common struct sg_table related issues")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
drivers/misc/fastrpc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 70eb5ed942d0..f12e909034ac 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -520,12 +520,13 @@ fastrpc_map_dma_buf(struct dma_buf_attachment *attachment,
{
struct fastrpc_dma_buf_attachment *a = attachment->priv;
struct sg_table *table;
+ int ret;
table = &a->sgt;
- if (!dma_map_sgtable(attachment->dev, table, dir, 0))
- return ERR_PTR(-ENOMEM);
-
+ ret = dma_map_sgtable(attachment->dev, table, dir, 0);
+ if (ret)
+ table = ERR_PTR(ret);
return table;
}
--
2.26.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable
2021-02-08 20:04 ` [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable Jonathan Marek
@ 2021-02-09 8:57 ` Marek Szyprowski
2021-02-10 16:36 ` Srinivas Kandagatla
1 sibling, 0 replies; 3+ messages in thread
From: Marek Szyprowski @ 2021-02-09 8:57 UTC (permalink / raw)
To: Jonathan Marek, linux-arm-msm
Cc: Arnd Bergmann, Greg Kroah-Hartman, open list
Hi
On 08.02.2021 21:04, Jonathan Marek wrote:
> dma_map_sgtable() returns 0 on success, which is the opposite of what this
> code was doing.
>
> Fixes: 7cd7edb89437 ("misc: fastrpc: fix common struct sg_table related issues")
> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Right, I'm really sorry for this regression.
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
> drivers/misc/fastrpc.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
> index 70eb5ed942d0..f12e909034ac 100644
> --- a/drivers/misc/fastrpc.c
> +++ b/drivers/misc/fastrpc.c
> @@ -520,12 +520,13 @@ fastrpc_map_dma_buf(struct dma_buf_attachment *attachment,
> {
> struct fastrpc_dma_buf_attachment *a = attachment->priv;
> struct sg_table *table;
> + int ret;
>
> table = &a->sgt;
>
> - if (!dma_map_sgtable(attachment->dev, table, dir, 0))
> - return ERR_PTR(-ENOMEM);
> -
> + ret = dma_map_sgtable(attachment->dev, table, dir, 0);
> + if (ret)
> + table = ERR_PTR(ret);
> return table;
> }
>
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable
2021-02-08 20:04 ` [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable Jonathan Marek
2021-02-09 8:57 ` Marek Szyprowski
@ 2021-02-10 16:36 ` Srinivas Kandagatla
1 sibling, 0 replies; 3+ messages in thread
From: Srinivas Kandagatla @ 2021-02-10 16:36 UTC (permalink / raw)
To: Jonathan Marek, linux-arm-msm
Cc: Arnd Bergmann, Greg Kroah-Hartman, Marek Szyprowski, open list
On 08/02/2021 20:04, Jonathan Marek wrote:
> dma_map_sgtable() returns 0 on success, which is the opposite of what this
> code was doing.
>
> Fixes: 7cd7edb89437 ("misc: fastrpc: fix common struct sg_table related issues")
> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> ---
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> drivers/misc/fastrpc.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
> index 70eb5ed942d0..f12e909034ac 100644
> --- a/drivers/misc/fastrpc.c
> +++ b/drivers/misc/fastrpc.c
> @@ -520,12 +520,13 @@ fastrpc_map_dma_buf(struct dma_buf_attachment *attachment,
> {
> struct fastrpc_dma_buf_attachment *a = attachment->priv;
> struct sg_table *table;
> + int ret;
>
> table = &a->sgt;
>
> - if (!dma_map_sgtable(attachment->dev, table, dir, 0))
> - return ERR_PTR(-ENOMEM);
> -
> + ret = dma_map_sgtable(attachment->dev, table, dir, 0);
> + if (ret)
> + table = ERR_PTR(ret);
> return table;
> }
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-02-08 20:04 ` [PATCH] misc: fastrpc: fix incorrect usage of dma_map_sgtable Jonathan Marek
2021-02-09 8:57 ` Marek Szyprowski
2021-02-10 16:36 ` Srinivas Kandagatla
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