From: Dan Carpenter <dan.carpenter@oracle.com>
To: Konrad Rzeszutek Wilk
<konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] swiotlb: remove an unecessary NULL check
Date: Thu, 05 Apr 2018 11:19:11 +0000 [thread overview]
Message-ID: <20180405111911.GC4218@mwanda> (raw)
Smatch complains here:
lib/swiotlb.c:730 swiotlb_alloc_buffer()
warn: variable dereferenced before check 'dev' (see line 716)
"dev" isn't ever NULL in this function so we can just remove the check.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 47aeb04c1997..51dde88e50a3 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -727,7 +727,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
out_unmap:
dev_warn(dev, "hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n",
- (unsigned long long)(dev ? dev->coherent_dma_mask : 0),
+ (unsigned long long)dev->coherent_dma_mask,
(unsigned long long)*dma_handle);
/*
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: Konrad Rzeszutek Wilk
<konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] swiotlb: remove an unecessary NULL check
Date: Thu, 5 Apr 2018 14:19:11 +0300 [thread overview]
Message-ID: <20180405111911.GC4218@mwanda> (raw)
Smatch complains here:
lib/swiotlb.c:730 swiotlb_alloc_buffer()
warn: variable dereferenced before check 'dev' (see line 716)
"dev" isn't ever NULL in this function so we can just remove the check.
Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 47aeb04c1997..51dde88e50a3 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -727,7 +727,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
out_unmap:
dev_warn(dev, "hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n",
- (unsigned long long)(dev ? dev->coherent_dma_mask : 0),
+ (unsigned long long)dev->coherent_dma_mask,
(unsigned long long)*dma_handle);
/*
next reply other threads:[~2018-04-05 11:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-05 11:19 Dan Carpenter [this message]
2018-04-05 11:19 ` [PATCH] swiotlb: remove an unecessary NULL check Dan Carpenter
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