::::::
:::::: Manual check reason: "low confidence static check warning:
arch/arm/mm/dma-mapping.c:77:57: warning: Parameter 'virt' can be declared with
const [constParameter]"
::::::
CC: kbuild-...@lists.01.org
BCC: l...@intel.com
TO: Christoph Hellwig <h...@lst.de>
tree: git://git.infradead.org/users/hch/dma-mapping for-next
head: 4136ce90f079e812fec2c5e10732b2265f61f1bd
commit: ae626eb97376148bb63c3f3ca9517fde0f39bec3 [11/14] ARM/dma-mapping: use
dma-direct unconditionally
:::::: branch date: 12 hours ago
:::::: commit date: 12 hours ago
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
reproduce (cppcheck warning):
# apt-get install cppcheck
git checkout ae626eb97376148bb63c3f3ca9517fde0f39bec3
cppcheck --quiet --enable=style,performance,portability --template=gcc
FILE
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <l...@intel.com>
cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
>> arch/arm/mm/dma-mapping.c:77:57: warning: Parameter 'virt' can be declared
>> with const [constParameter]
static struct arm_dma_buffer *arm_dma_buffer_find(void *virt)
^
>> arch/arm/mm/dma-mapping.c:84:12: warning: Uninitialized variable: buf->virt
>> [uninitvar]
if (buf->virt == virt) {
^
vim +/virt +77 arch/arm/mm/dma-mapping.c
19e6e5e5392bd64 Rabin Vincent 2016-03-03 76
19e6e5e5392bd64 Rabin Vincent 2016-03-03 @77 static struct arm_dma_buffer
*arm_dma_buffer_find(void *virt)
19e6e5e5392bd64 Rabin Vincent 2016-03-03 78 {
19e6e5e5392bd64 Rabin Vincent 2016-03-03 79 struct arm_dma_buffer *buf,
*found = NULL;
19e6e5e5392bd64 Rabin Vincent 2016-03-03 80 unsigned long flags;
19e6e5e5392bd64 Rabin Vincent 2016-03-03 81
19e6e5e5392bd64 Rabin Vincent 2016-03-03 82
spin_lock_irqsave(&arm_dma_bufs_lock, flags);
19e6e5e5392bd64 Rabin Vincent 2016-03-03 83 list_for_each_entry(buf,
&arm_dma_bufs, list) {
19e6e5e5392bd64 Rabin Vincent 2016-03-03 @84 if (buf->virt == virt) {
19e6e5e5392bd64 Rabin Vincent 2016-03-03 85
list_del(&buf->list);
19e6e5e5392bd64 Rabin Vincent 2016-03-03 86 found = buf;
19e6e5e5392bd64 Rabin Vincent 2016-03-03 87 break;
19e6e5e5392bd64 Rabin Vincent 2016-03-03 88 }
19e6e5e5392bd64 Rabin Vincent 2016-03-03 89 }
19e6e5e5392bd64 Rabin Vincent 2016-03-03 90
spin_unlock_irqrestore(&arm_dma_bufs_lock, flags);
19e6e5e5392bd64 Rabin Vincent 2016-03-03 91 return found;
19e6e5e5392bd64 Rabin Vincent 2016-03-03 92 }
19e6e5e5392bd64 Rabin Vincent 2016-03-03 93
:::::: The code at line 77 was first introduced by commit
:::::: 19e6e5e5392bd646c93d9e2c7b2b58c8558cb041 ARM: 8547/1: dma-mapping: store
buffer information
:::::: TO: Rabin Vincent <ra...@rab.in>
:::::: CC: Russell King <rmk+ker...@arm.linux.org.uk>
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