diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2025-05-08 10:05:48 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2025-05-14 14:52:55 +0100 |
| commit | ae74cd15ade833adc289279b5c6f12e78f64d4d7 (patch) | |
| tree | 04feb53890505ff466757f9f5aec0bd33154b6d5 | |
| parent | a409e919ca321cc0e28f8abf96fde299f0072a81 (diff) | |
dmaengine: idxd: Fix ->poll() return value
The fix to block access from different address space did not return a
correct value for ->poll() change. kernel test bot reported that a
return value of type __poll_t is expected rather than int. Fix to return
POLLNVAL to indicate invalid request.
Fixes: 8dfa57aabff6 ("dmaengine: idxd: Fix allowing write() from different address spaces")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505081851.rwD7jVxg-lkp@intel.com/
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20250508170548.2747425-1-dave.jiang@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/idxd/cdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index a2fb2b8477526..6d12033649f81 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -500,7 +500,7 @@ static __poll_t idxd_cdev_poll(struct file *filp, __poll_t out = 0; if (current->mm != ctx->mm) - return -EPERM; + return POLLNVAL; poll_wait(filp, &wq->err_queue, wait); spin_lock(&idxd->dev_lock); |