ioat: fail self-test if wait_for_completion times out

wait_for_completion_timeout reaching timeout was being ignored,
fail the self-test if timeout condition occurs.

v2: fixup of coding style issues.

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index 61510abfabb7cd4e9bdd3d58ee86406086bbdd7f..77a6dcf25b98b818b9d83ecbbf0d99edc3783056 100644 (file)
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -1316,7 +1316,8 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
 
        tmo = wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000));
 
-       if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_COMPLETE) {
+       if (tmo == 0 ||
+           dma->device_tx_status(dma_chan, cookie, NULL) != DMA_COMPLETE) {
                dev_err(dev, "Self-test xor timed out\n");
                err = -ENODEV;
                goto dma_unmap;
@@ -1382,7 +1383,8 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
 
        tmo = wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000));
 
-       if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_COMPLETE) {
+       if (tmo == 0 ||
+           dma->device_tx_status(dma_chan, cookie, NULL) != DMA_COMPLETE) {
                dev_err(dev, "Self-test validate timed out\n");
                err = -ENODEV;
                goto dma_unmap;
@@ -1434,7 +1436,8 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
 
        tmo = wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000));
 
-       if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_COMPLETE) {
+       if (tmo == 0 ||
+           dma->device_tx_status(dma_chan, cookie, NULL) != DMA_COMPLETE) {
                dev_err(dev, "Self-test 2nd validate timed out\n");
                err = -ENODEV;
                goto dma_unmap;