Patch "dmaengine: idxd: Fix missing error code in idxd_cdev_open()" has been added to the 5.12-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    dmaengine: idxd: Fix missing error code in idxd_cdev_open()

to the 5.12-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     dmaengine-idxd-fix-missing-error-code-in-idxd_cdev_o.patch
and it can be found in the queue-5.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 71546332846dcad43f334c0ba12e0c339c48575c
Author: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
Date:   Wed Jun 2 18:07:26 2021 +0800

    dmaengine: idxd: Fix missing error code in idxd_cdev_open()
    
    [ Upstream commit 99b18e88a1cf737ae924123d63b46d9a3d17b1af ]
    
    The error code is missing in this code scenario, add the error code
    '-EINVAL' to the return value 'rc'.
    
    Eliminate the follow smatch warning:
    
    drivers/dma/idxd/cdev.c:113 idxd_cdev_open() warn: missing error code
    'rc'.
    
    Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
    Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
    Acked-by: Dave Jiang <dave.jiang@xxxxxxxxx>
    Link: https://lore.kernel.org/r/1622628446-87909-1-git-send-email-jiapeng.chong@xxxxxxxxxxxxxxxxx
    Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c
index 1d8a3876b745..5ba8e8bc609f 100644
--- a/drivers/dma/idxd/cdev.c
+++ b/drivers/dma/idxd/cdev.c
@@ -110,6 +110,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
 		pasid = iommu_sva_get_pasid(sva);
 		if (pasid == IOMMU_PASID_INVALID) {
 			iommu_sva_unbind_device(sva);
+			rc = -EINVAL;
 			goto failed;
 		}