From: Colin King <colin.king@canonical.com>
To: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Anan sun <anan.sun@mediatek.com>, Yong Wu <yong.wu@mediatek.com>,
Chao Hao <chao.hao@mediatek.com>,
Tomasz Figa <tfiga@chromium.org>,
iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH][next] iommu/mediatek: Fix unsigned domid comparison with less than zero
Date: Wed, 3 Feb 2021 13:59:36 +0000 [thread overview]
Message-ID: <20210203135936.23016-1-colin.king@canonical.com> (raw)
From: Colin Ian King <colin.king@canonical.com>
Currently the check for domid < 0 is always false because domid
is unsigned. Fix this by making it signed.
Addresses-CoverityL ("Unsigned comparison against 0")
Fixes: ab1d5281a62b ("iommu/mediatek: Add iova reserved function")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/iommu/mtk_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 0ad14a7604b1..823d719945b2 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -640,7 +640,7 @@ static void mtk_iommu_get_resv_regions(struct device *dev,
struct list_head *head)
{
struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
- unsigned int domid = mtk_iommu_get_domain_id(dev, data->plat_data), i;
+ int domid = mtk_iommu_get_domain_id(dev, data->plat_data), i;
const struct mtk_iommu_iova_region *resv, *curdom;
struct iommu_resv_region *region;
int prot = IOMMU_WRITE | IOMMU_READ;
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-02-03 14:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 13:59 Colin King [this message]
2021-02-04 1:11 ` [PATCH][next] iommu/mediatek: Fix unsigned domid comparison with less than zero Yong Wu
2021-02-04 9:25 ` Will Deacon
2021-02-04 13:31 ` Joerg Roedel
2021-02-09 9:19 ` Dan Carpenter
2021-02-09 10:57 ` AW: " Walter Harms
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210203135936.23016-1-colin.king@canonical.com \
--to=colin.king@canonical.com \
--cc=anan.sun@mediatek.com \
--cc=chao.hao@mediatek.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=matthias.bgg@gmail.com \
--cc=tfiga@chromium.org \
--cc=will@kernel.org \
--cc=yong.wu@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).