From: Randy Dunlap <rdunlap@infradead.org>
To: kernel test robot <lkp@intel.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: Re: drivers/net/ethernet/renesas/rswitch.c:355:71: warning: left shift count >= width of type
Date: Tue, 25 Oct 2022 22:49:14 -0700 [thread overview]
Message-ID: <caa1e514-1fa3-229c-3772-91357240d6f4@infradead.org> (raw)
In-Reply-To: <202210222356.2lAehSmv-lkp@intel.com>
Hi k.t.r.,
On 10/22/22 08:23, kernel test robot wrote:
> tree: https://github.com/intel-lab-lkp/linux/commits/Yoshihiro-Shimoda/net-phy-marvell10g-Add-host-speed-setting-by-an-ethernet-driver/20221020-091402
> head: 54882d9015d6bc070075b3ab4eab5cf4d75cf56e
> commit: 77bfe15a20a8c80e2150e86970e1157acfca24f8 net: ethernet: renesas: Add Ethernet Switch driver
> date: 3 days ago
> config: parisc64-allyesconfig
The attached .config file does not contain "CONFIG_64BIT".
How did you generate it?
(more below)
> compiler: hppa-linux-gcc (GCC) 12.1.0
> 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://github.com/intel-lab-lkp/linux/commit/77bfe15a20a8c80e2150e86970e1157acfca24f8
> git remote add linux-review https://github.com/intel-lab-lkp/linux
> git fetch --no-tags linux-review Yoshihiro-Shimoda/net-phy-marvell10g-Add-host-speed-setting-by-an-ethernet-driver/20221020-091402
> git checkout 77bfe15a20a8c80e2150e86970e1157acfca24f8
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash drivers/media/platform/chips-media/ drivers/net/ethernet/renesas/ drivers/staging/vt6655/
For 64BIT parisc builds, it would be better to use
ARCH=parisc64
See 805ce8614958: parisc: Allow CONFIG_64BIT with ARCH=parisc
and 3dcfb729b5f4: parisc: Make CONFIG_64BIT available for ARCH=parisc64 only
To use only ARCH=parisc, you must ensure that both PA8X00=y and 64BIT=y in the .config file.
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> drivers/net/ethernet/renesas/rswitch.c: In function 'rswitch_ext_desc_get_dptr':
>>> drivers/net/ethernet/renesas/rswitch.c:355:71: warning: left shift count >= width of type [-Wshift-count-overflow]
> 355 | return __le32_to_cpu(desc->dptrl) | (dma_addr_t)(desc->dptrh) << 32;
> | ^~
> drivers/net/ethernet/renesas/rswitch.c: In function 'rswitch_ext_ts_desc_get_dptr':
> drivers/net/ethernet/renesas/rswitch.c:367:71: warning: left shift count >= width of type [-Wshift-count-overflow]
> 367 | return __le32_to_cpu(desc->dptrl) | (dma_addr_t)(desc->dptrh) << 32;
> | ^~
>
>
> vim +355 drivers/net/ethernet/renesas/rswitch.c
>
> 352
> 353 static dma_addr_t rswitch_ext_desc_get_dptr(struct rswitch_ext_desc *desc)
> 354 {
> > 355 return __le32_to_cpu(desc->dptrl) | (dma_addr_t)(desc->dptrh) << 32;
> 356 }
> 357
>
--
~Randy
next prev parent reply other threads:[~2022-10-26 5:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-22 15:23 drivers/net/ethernet/renesas/rswitch.c:355:71: warning: left shift count >= width of type kernel test robot
2022-10-26 5:49 ` Randy Dunlap [this message]
2022-10-26 8:23 ` [kbuild-all] " Chen, Rong A
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