Messages in this thread | | | Subject | Re: [PATCH 7/9] ASoC: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning | From | Liam Girdwood <> | Date | Mon, 16 May 2011 17:26:32 +0100 |
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On Thu, 2011-05-12 at 16:50 -0700, Stephen Boyd wrote: > Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following > warning: > > In file included from arch/x86/include/asm/uaccess.h:573, > from include/linux/poll.h:14, > from include/sound/pcm.h:29, > from include/sound/ac97_codec.h:31, > from sound/soc/soc-core.c:34: > In function 'copy_from_user', > inlined from 'codec_reg_write_file' at > sound/soc/soc-core.c:252: > arch/x86/include/asm/uaccess_64.h:65: > warning: call to 'copy_from_user_overflow' declared with > attribute warning: copy_from_user() buffer size is not provably > correct > > presumably due to buf_size being signed causing GCC to fail to > see that buf_size can't become negative. > > Cc: Liam Girdwood <lrg@slimlogic.co.uk> > Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> > Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Liam Girdwood <lrg@ti.com>
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