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From: Dave Jiang <dave.jiang@intel.com>
To: vkoul@kernel.org
Cc: dmaengine@vger.kernel.org
Subject: [PATCH v2] dmaengine: idxd: fix misc interrupt handler thread unmasking
Date: Thu, 25 Jun 2020 12:16:54 -0700	[thread overview]
Message-ID: <159311256528.855.11527922406329728512.stgit@djiang5-desk3.ch.intel.com> (raw)

Fix unmasking of misc interrupt handler when completing normal. It exits
early and skips the unmasking with the current implementation. Fix to
unmask interrupt when exiting normally.

Fixes: bfe1d56091c1 ("dmaengine: idxd: Init and probe for Intel data accelerators")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---

Rebased against dmaengine fixes branch

 drivers/dma/idxd/irq.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c
index 6510791b9921..8a35f58da689 100644
--- a/drivers/dma/idxd/irq.c
+++ b/drivers/dma/idxd/irq.c
@@ -141,7 +141,7 @@ irqreturn_t idxd_misc_thread(int vec, void *data)
 
 	iowrite32(cause, idxd->reg_base + IDXD_INTCAUSE_OFFSET);
 	if (!err)
-		return IRQ_HANDLED;
+		goto out;
 
 	gensts.bits = ioread32(idxd->reg_base + IDXD_GENSTATS_OFFSET);
 	if (gensts.state == IDXD_DEVICE_STATE_HALT) {
@@ -162,6 +162,7 @@ irqreturn_t idxd_misc_thread(int vec, void *data)
 		spin_unlock_bh(&idxd->dev_lock);
 	}
 
+ out:
 	idxd_unmask_msix_vector(idxd, irq_entry->id);
 	return IRQ_HANDLED;
 }


             reply	other threads:[~2020-06-25 19:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-25 19:16 Dave Jiang [this message]
2020-07-02 13:32 ` [PATCH v2] dmaengine: idxd: fix misc interrupt handler thread unmasking Vinod Koul
2020-07-02 13:33 ` Vinod Koul

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