* [PATCH] dmaengine: idxd: add RO check for wq max_transfer_size write
@ 2022-04-11 22:08 Dave Jiang
2022-04-20 11:47 ` Vinod Koul
0 siblings, 1 reply; 2+ messages in thread
From: Dave Jiang @ 2022-04-11 22:08 UTC (permalink / raw)
To: vkoul; +Cc: dmaengine
Block wq_max_transfer_size_store() when the device is configured as
read-only and not configurable.
Fixes: d7aad5550eca ("dmaengine: idxd: add support for configurable max wq xfer size")
Reported-by: Bernice Zhang <bernice.zhang@intel.com>
Tested-by: Bernice Zhang <bernice.zhang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
drivers/dma/idxd/sysfs.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 7e19ab92b61a..ec13ca4808f9 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -905,6 +905,9 @@ static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attr
u64 xfer_size;
int rc;
+ if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
+ return -EPERM;
+
if (wq->state != IDXD_WQ_DISABLED)
return -EPERM;
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] dmaengine: idxd: add RO check for wq max_transfer_size write
2022-04-11 22:08 [PATCH] dmaengine: idxd: add RO check for wq max_transfer_size write Dave Jiang
@ 2022-04-20 11:47 ` Vinod Koul
0 siblings, 0 replies; 2+ messages in thread
From: Vinod Koul @ 2022-04-20 11:47 UTC (permalink / raw)
To: Dave Jiang; +Cc: dmaengine
On 11-04-22, 15:08, Dave Jiang wrote:
> Block wq_max_transfer_size_store() when the device is configured as
> read-only and not configurable.
Applied, thanks
>
> Fixes: d7aad5550eca ("dmaengine: idxd: add support for configurable max wq xfer size")
> Reported-by: Bernice Zhang <bernice.zhang@intel.com>
> Tested-by: Bernice Zhang <bernice.zhang@intel.com>
> Signed-off-by: Dave Jiang <dave.jiang@intel.com>
> ---
> drivers/dma/idxd/sysfs.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
> index 7e19ab92b61a..ec13ca4808f9 100644
> --- a/drivers/dma/idxd/sysfs.c
> +++ b/drivers/dma/idxd/sysfs.c
> @@ -905,6 +905,9 @@ static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attr
> u64 xfer_size;
> int rc;
>
> + if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
> + return -EPERM;
> +
> if (wq->state != IDXD_WQ_DISABLED)
> return -EPERM;
>
>
--
~Vinod
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-04-20 11:48 UTC | newest]
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2022-04-11 22:08 [PATCH] dmaengine: idxd: add RO check for wq max_transfer_size write Dave Jiang
2022-04-20 11:47 ` Vinod Koul
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