dmaengine: dmatest: Fix dmatest waiting less when interrupted

[ Upstream commit e87ca16e99118ab4e130a41bdf12abbf6a87656c ]

Change the "wait for operation finish" logic to take interrupts into
account.

When using dmatest with idxd DMA engine, it's possible that during
longer tests, the interrupt notifying the finish of an operation
happens during wait_event_freezable_timeout(), which causes dmatest to
cleanup all the resources, some of which might still be in use.

This fix ensures that the wait logic correctly handles interrupts,
preventing premature cleanup of resources.

Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202502171134.8c403348-lkp@intel.com
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20250305230007.590178-1-vinicius.gomes@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 91b2fbc0b8647127c7753669fa21c84d300764b9..d891dfca358e209c9a5c2d8b49e3e539130e53e8 100644 (file)
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -841,9 +841,9 @@ static int dmatest_func(void *data)
                } else {
                        dma_async_issue_pending(chan);
 
-                       wait_event_freezable_timeout(thread->done_wait,
-                                       done->done,
-                                       msecs_to_jiffies(params->timeout));
+                       wait_event_timeout(thread->done_wait,
+                                          done->done,
+                                          msecs_to_jiffies(params->timeout));
 
                        status = dma_async_is_tx_complete(chan, cookie, NULL,
                                                          NULL);