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 ffe621695e472b6b6d96e2a06a85ff514ee65651..78b8a97b23637667f48ab380cdacc29d8bde93d1 100644 (file)
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -827,9 +827,9 @@ 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);