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From:   Christoph Hellwig <hch@lst.de>
To:     =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= <jglisse@redhat.com>,
        Jason Gunthorpe <jgg@mellanox.com>,
        Ben Skeggs <bskeggs@redhat.com>
Cc:     Ralph Campbell <rcampbell@nvidia.com>, linux-mm@kvack.org,
        nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 5/6] nouveau: return -EBUSY when hmm_range_wait_until_valid fails
Date:   Mon, 22 Jul 2019 11:44:25 +0200
Message-Id: <20190722094426.18563-6-hch@lst.de>
In-Reply-To: <20190722094426.18563-1-hch@lst.de>
References: <20190722094426.18563-1-hch@lst.de>
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-EAGAIN has a magic meaning for non-blocking faults, so don't overload
it.  Given that the caller doesn't check for specific error codes this
change is purely cosmetic.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/gpu/drm/nouveau/nouveau_svm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 5de2d54b9782..a9c5c58d425b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -501,7 +501,7 @@ nouveau_range_fault(struct hmm_mirror *mirror, struct hmm_range *range)
 
 	if (!hmm_range_wait_until_valid(range, HMM_RANGE_DEFAULT_TIMEOUT)) {
 		up_read(&range->vma->vm_mm->mmap_sem);
-		return -EAGAIN;
+		return -EBUSY;
 	}
 
 	ret = hmm_range_fault(range, true);
-- 
2.20.1