linux-kernel - Re: mainline build: 15 warnings 0 failures (mainline/v4.16-rc2-64-gaf3e79d)

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Date:   Wed, 21 Feb 2018 13:42:10 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     "Olof's autobuilder" <build@...om.net>
Cc:     Olof Johansson <olof@...om.net>,
        Kernel Build Reports Mailman List 
        <kernel-build-reports@...ts.linaro.org>,
        linux-rdma <linux-rdma@...r.kernel.org>,
        selvin.xavier@...adcom.com, devesh.sharma@...adcom.com,
        Somnath Kotur <somnath.kotur@...adcom.com>,
        sriharsha.basavapatna@...adcom.com,
        Kishon Vijay Abraham I <kishon@...com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: mainline build: 15 warnings 0 failures (mainline/v4.16-rc2-64-gaf3e79d)

On Tue, Feb 20, 2018 at 7:34 PM, Olof's autobuilder <build@...om.net> wrote:
> Here are the build results from automated periodic testing.
>
> The tree being built was mainline, found at:
>
> URL: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
>
> Warnings:
>
>         arm64.allmodconfig:
> include/uapi/linux/byteorder/big_endian.h:31:52: warning: passing argument 1 of '__fswab64' makes integer from pointer without a cast [-Wint-conversion]

I sent two patches to the bnxt_re maintainers yesterday. I expect them
to get applied
soon, but haven't heard back yet.

> WARNING: modpost: missing MODULE_LICENSE() in drivers/phy/qualcomm/phy-qcom-ufs.o

Still waiting for Kishon to apply an older patch I sent for this.

>         arm.allmodconfig:
> /tmp/ccQBDjc9.s:18123: Warning: using r15 results in unpredictable behaviour
> /tmp/ccQBDjc9.s:18195: Warning: using r15 results in unpredictable behaviour

I have done multiple versions of a patch for this, none was
universally liked, but
we need to decide on one of them.

> include/linux/bitops.h:7:24: warning: left shift count >= width of type [-Wshift-count-overflow]
> include/linux/bitops.h:7:24: warning: left shift count >= width of type [-Wshift-count-overflow]
> include/linux/bitops.h:7:24: warning: left shift count >= width of type [-Wshift-count-overflow]
> drivers/infiniband/hw/bnxt_re/qplib_fp.c:333:23: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> drivers/infiniband/hw/bnxt_re/qplib_fp.c:336:12: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> include/uapi/linux/swab.h:127:46: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Also bnxt_re, same as above

> drivers/infiniband/core/cq.c:78:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=]

Sent a patch yesterday, my workaround was suboptimal, discussion about
a better fix
is ongoing.

>         arm.spear3xx_defconfig:
> net/core/filter.c:3382:6: warning: unused variable 'val' [-Wunused-variable]
>
>         arm.spear6xx_defconfig:
> net/core/filter.c:3382:6: warning: unused variable 'val' [-Wunused-variable]
>
>         arm.tct_hammer_defconfig:
> net/core/filter.c:3382:6: warning: unused variable 'val' [-Wunused-variable]

Sent two versions of a patch yesterday, the second version was applied and
should make it into mainline next week.

       Arnd