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SubjectRe: [PATCH 2/9] iwlwifi: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
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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/net/checksum.h:25,
> from include/linux/skbuff.h:28,
> from drivers/net/wireless/iwlwifi/iwl-agn-rs.c:28:
> In function 'copy_from_user',
> inlined from 'rs_sta_dbgfs_scale_table_write' at
> drivers/net/wireless/iwlwifi/iwl-agn-rs.c:3099:
> 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: Wey-Yi Guy <wey-yi.w.guy@intel.com>
> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
> ---
> drivers/net/wireless/iwlwifi/iwl-agn-rs.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
Thank you

Wey



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