On Friday 28 September 2012 01:09 PM, Maarten Lankhorst wrote:
> Op 28-09-12 09:29, Rob Clark schreef:
>> From: Rob Clark <rob at ti.com>
>>
>> We never really clarified if unmap could be done in atomic context.
>> But since mapping might require sleeping, this implies mutex in use
>> to synchronize mapping/unmapping, so unmap could sleep as well. Add
>> a might_sleep() to clarify this.
>>
>> Signed-off-by: Rob Clark <rob at ti.com>
>> Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>> ---
>> drivers/base/dma-buf.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/base/dma-buf.c b/drivers/base/dma-buf.c
>> index c30f3e1..877eacb 100644
>> --- a/drivers/base/dma-buf.c
>> +++ b/drivers/base/dma-buf.c
>> @@ -298,6 +298,8 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment
>> *attach,
>> struct sg_table *sg_table,
>> enum dma_data_direction direction)
>> {
>> + might_sleep();
>> +
>> if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
>> return;
>>
> Looks good to me!
>
> Reviewed-by: Maarten Lankhorst <maarten.lankhorst at canonical.com>
Thanks Rob,
Applied to for-next.
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