Re: [PATCH net-next 0/6] net: hns3: Add more commands to Debugfs in HNS3 driver

[David Miller]

From: David Miller <davem@xxxxxxxxxxxxx>
Date: Fri, 14 Dec 2018 14:30:46 -0800 (PST)

> From: Salil Mehta <salil.mehta@xxxxxxxxxx>
> Date: Tue, 11 Dec 2018 17:13:24 +0000
> 
>> This patch-set adds few more debugfs commands to HNS3 Ethernet
>> Driver. Support has been added to query info related to below
>> items:
>> 1. Packet buffer descriptor ("echo bd info [queue no] [bd index] > cmd")
>> 2. Manager table("echo dump mng tbl > cmd")
>> 3. Dfx status register("echo dump reg ssu [prt id] > cmd")
>> 4. Dcb status register("echo dump reg dcb [port id] > cmd")
>> 5. Queue map ("echo queue map [queue no] > cmd")
>> 6. Tm map ("echo tm map [queue no] > cmd")
>> 
>> NOTE: Above commands are *read-only* and are only intended to
>> query the information from the SoC(and dump inside the kernel,
>> for now) and in no way tries to perform write operations for
>> the purpose of configuration etc.
> 
> Series applied.

Actually, reverted.

Please fix these warnings and resubmit (with gcc version
"gcc (GCC) 8.2.1 20181105 (Red Hat 8.2.1-5)"):

In file included from ./include/linux/bitmap.h:9,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:21,
                 from ./arch/x86/include/asm/cpufeature.h:8,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:38,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:81,
                 from ./include/linux/spinlock.h:51,
                 from ./include/linux/wait.h:9,
                 from ./include/linux/wait_bit.h:8,
                 from ./include/linux/fs.h:6,
                 from ./include/linux/debugfs.h:15,
                 from drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c:4:
In function ʽstrncatʼ,
    inlined from ʽhns3_dbg_helpʼ at drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c:263:2:
./include/linux/string.h:320:10: warning: ʽ__builtin_strncatʼ specified bound 256 equals destination size [-Wstringop-overflow=]
   return __builtin_strncat(p, q, count);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ʽstrncatʼ,
    inlined from ʽhns3_dbg_helpʼ at drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c:252:2:
./include/linux/string.h:320:10: warning: ʽ__builtin_strncatʼ specified bound 256 equals destination size [-Wstringop-overflow=]
   return __builtin_strncat(p, q, count);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ./include/linux/bitmap.h:9,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:21,
                 from ./include/linux/mutex.h:19,
                 from ./include/linux/kernfs.h:13,
                 from ./include/linux/sysfs.h:16,
                 from ./include/linux/kobject.h:20,
                 from ./include/linux/device.h:16,
                 from drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:4:
In function ʽstrncatʼ,
    inlined from ʽhclge_dbg_dump_mng_tableʼ at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:795:2:
./include/linux/string.h:320:10: warning: ʽ__builtin_strncatʼ specified bound 256 equals destination size [-Wstringop-overflow=]
   return __builtin_strncat(p, q, count);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~