linux-kernel - [PATCH -next] vfio/pds: fix return value in pds_vfio_get_lm

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Date:   Sat, 19 Aug 2023 10:37:16 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <brett.creeley@....com>, <jgg@...pe.ca>, <yishaih@...dia.com>,
        <shameerali.kolothum.thodi@...wei.com>, <kevin.tian@...el.com>,
        <alex.williamson@...hat.com>, <horms@...nel.org>,
        <shannon.nelson@....com>, <yangyingliang@...wei.com>
Subject: [PATCH -next] vfio/pds: fix return value in pds_vfio_get_lm_file()

anon_inode_getfile() never returns NULL pointer, it will return
ERR_PTR() when it fails, so replace the check with IS_ERR().

Fixes: bb500dbe2ac6 ("vfio/pds: Add VFIO live migration support")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/vfio/pci/pds/lm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vfio/pci/pds/lm.c b/drivers/vfio/pci/pds/lm.c
index aec75574cab3..79fe2e66bb49 100644
--- a/drivers/vfio/pci/pds/lm.c
+++ b/drivers/vfio/pci/pds/lm.c
@@ -31,7 +31,7 @@ pds_vfio_get_lm_file(const struct file_operations *fops, int flags, u64 size)
 	/* Create file */
 	lm_file->filep =
 		anon_inode_getfile("pds_vfio_lm", fops, lm_file, flags);
-	if (!lm_file->filep)
+	if (IS_ERR(lm_file->filep))
 		goto out_free_file;
 
 	stream_open(lm_file->filep->f_inode, lm_file->filep);
-- 
2.25.1