From: kernel test robot <lkp@intel.com>
To: Bailey Forrest <bcf@google.com>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
linux-kernel@vger.kernel.org,
Willem de Bruijn <willemb@google.com>,
Catherine Sullivan <csully@google.com>
Subject: drivers/net/ethernet/google/gve/gve_tx_dqo.c:753:25: warning: variable 'buf' set but not used
Date: Sun, 29 Aug 2021 08:02:26 +0800 [thread overview]
Message-ID: <202108290816.lD7XgRKb-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3f5ad13cb012939e1797ec9cdf43941c169216d2
commit: a57e5de476be0b4b7f42beb6a21c19ad9c577aa3 gve: DQO: Add TX path
date: 9 weeks ago
config: i386-randconfig-a001-20210829 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4e1a164d7bd53653f79decc121afe784d2fde0a7)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a57e5de476be0b4b7f42beb6a21c19ad9c577aa3
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout a57e5de476be0b4b7f42beb6a21c19ad9c577aa3
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/net/ethernet/google/gve/gve_tx_dqo.c:88:27: warning: unused variable 'buf' [-Wunused-variable]
struct gve_tx_dma_buf *buf = &cur_state->bufs[j];
^
drivers/net/ethernet/google/gve/gve_tx_dqo.c:496:26: warning: unused variable 'buf' [-Wunused-variable]
struct gve_tx_dma_buf *buf =
^
drivers/net/ethernet/google/gve/gve_tx_dqo.c:515:26: warning: unused variable 'buf' [-Wunused-variable]
struct gve_tx_dma_buf *buf =
^
drivers/net/ethernet/google/gve/gve_tx_dqo.c:556:26: warning: unused variable 'buf' [-Wunused-variable]
struct gve_tx_dma_buf *buf = &pending_packet->bufs[i];
^
drivers/net/ethernet/google/gve/gve_tx_dqo.c:730:6: warning: variable 'index' set but not used [-Wunused-but-set-variable]
s16 index, prev_index, next_index;
^
>> drivers/net/ethernet/google/gve/gve_tx_dqo.c:753:25: warning: variable 'buf' set but not used [-Wunused-but-set-variable]
struct gve_tx_dma_buf *buf;
^
drivers/net/ethernet/google/gve/gve_tx_dqo.c:895:9: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
(pending_packet - tx->dqo.pending_packets));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/net.h:257:42: note: expanded from macro 'net_err_ratelimited'
net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__)
~~~ ^~~~~~~~~~~
include/linux/net.h:247:12: note: expanded from macro 'net_ratelimited_function'
function(__VA_ARGS__); \
^~~~~~~~~~~
include/linux/printk.h:343:33: note: expanded from macro 'pr_err'
printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
~~~ ^~~~~~~~~~~
7 warnings generated.
vim +/buf +753 drivers/net/ethernet/google/gve/gve_tx_dqo.c
749
750 static void gve_unmap_packet(struct device *dev,
751 struct gve_tx_pending_packet_dqo *pending_packet)
752 {
> 753 struct gve_tx_dma_buf *buf;
754 int i;
755
756 /* SKB linear portion is guaranteed to be mapped */
757 buf = &pending_packet->bufs[0];
758 dma_unmap_single(dev, dma_unmap_addr(buf, dma),
759 dma_unmap_len(buf, len), DMA_TO_DEVICE);
760 for (i = 1; i < pending_packet->num_bufs; i++) {
761 buf = &pending_packet->bufs[i];
762 dma_unmap_page(dev, dma_unmap_addr(buf, dma),
763 dma_unmap_len(buf, len), DMA_TO_DEVICE);
764 }
765 pending_packet->num_bufs = 0;
766 }
767
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next reply other threads:[~2021-08-29 0:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-29 0:02 kernel test robot [this message]
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2021-07-19 1:18 drivers/net/ethernet/google/gve/gve_tx_dqo.c:753:25: warning: variable 'buf' set but not used kernel test robot
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