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Bluetooth: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning

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Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following
warning:

In function 'copy_from_user',
    inlined from 'rfcomm_sock_setsockopt' at
    net/bluetooth/rfcomm/sock.c:705:
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: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Stephen Boyd 2011-05-12 16:50:09 -07:00 committed by Gustavo F. Padovan
parent 8d03e971cf
commit d0fad89da9
1 changed files with 2 additions and 1 deletions
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3
net/bluetooth/rfcomm/sock.c
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@ -679,7 +679,8 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
{
struct sock *sk = sock->sk;
struct bt_security sec;
int len, err = 0;
int err = 0;
size_t len;
u32 opt;
BT_DBG("sk %p", sk);