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Groups > linux.kernel > #1614384

Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch warning

From Joe Perches <joe@perches.com>
Newsgroups linux.kernel
Subject Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch warning
Date 2017-04-01 05:40 +0200
Message-ID <tri3o-5wb-11@gated-at.bofh.it> (permalink)
References <trguC-4hQ-5@gated-at.bofh.it> <trguC-4hQ-9@gated-at.bofh.it> <trgNZ-4N2-23@gated-at.bofh.it> <trhgZ-4Xz-1@gated-at.bofh.it> <trhK1-5pA-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, 2017-03-31 at 20:18 -0700, Chewie Lin wrote:
> These are good points, but any feedback on the dev_warn() call itself?
> I was trying to fix the checkpatch warning on my first try.

Using "%s" with a long string is generally inefficient.

Compare the compiled object size of
	printf("%s is %d\n", "Long string", 1);
to
	printf("Long string is %d\n", 1); 

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Thread

[PATCH] eudyptula challenge Chewie Lin <linsh@oregonstate.edu> - 2017-04-01 04:00 +0200
  [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch warning Chewie Lin <linsh@oregonstate.edu> - 2017-04-01 04:00 +0200
    Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Joe Perches <joe@perches.com> - 2017-04-01 04:20 +0200
    Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Randy Dunlap <rdunlap@infradead.org> - 2017-04-01 04:20 +0200
      Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Joe Perches <joe@perches.com> - 2017-04-01 04:50 +0200
        Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Chewie Lin <linsh@oregonstate.edu> - 2017-04-01 05:20 +0200
          Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Joe Perches <joe@perches.com> - 2017-04-01 05:40 +0200
    Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-01 05:40 +0200
      Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Joe Perches <joe@perches.com> - 2017-04-01 05:40 +0200
        Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-01 05:50 +0200
          Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Joe Perches <joe@perches.com> - 2017-04-01 06:00 +0200
            Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-01 06:10 +0200
              Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Joe Perches <joe@perches.com> - 2017-04-01 06:30 +0200
      Re: [PATCH 001/001] drivers/staging/vt6656/main_usb.c: checkpatch  warning Chewie Lin <linsh@oregonstate.edu> - 2017-04-01 06:40 +0200

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