From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Dudley Du <dudl@cypress.com>
Cc: jmmahler@gmail.com, rydberg@euromail.se, bleung@google.com,
dan.carpenter@oracle.com, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] input: cyapa: fix variable dereferenced before check 'gen5_pip->resp_len' issue
Date: Thu, 22 Jan 2015 08:22:01 -0800 [thread overview]
Message-ID: <20150122162201.GC18153@dtor-ws> (raw)
In-Reply-To: <1421909406-1240-2-git-send-email-dudl@cypress.com>
On Thu, Jan 22, 2015 at 02:50:06PM +0800, Dudley Du wrote:
> Fixes the warning issue of the variable dereferenced before check
> 'gen5_pip->resp_len' report by dan Carpenter.
>
> Signed-off-by: Dudley Du <dudl@cypress.com>
Applied, thank you.
> ---
> drivers/input/mouse/cyapa_gen5.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c
> index 69d9059..ed1af74 100644
> --- a/drivers/input/mouse/cyapa_gen5.c
> +++ b/drivers/input/mouse/cyapa_gen5.c
> @@ -2558,7 +2558,9 @@ static bool cyapa_gen5_irq_cmd_handler(struct cyapa *cyapa)
> * trackpad device when booting/rebooting
> * their chrome book.
> */
> - length = *gen5_pip->resp_len;
> + length = 0;
> + if (gen5_pip->resp_len)
> + length = *gen5_pip->resp_len;
> cyapa_empty_pip_output_data(cyapa,
> gen5_pip->resp_data,
> &length,
> --
> 1.9.1
>
--
Dmitry
next prev parent reply other threads:[~2015-01-22 16:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-22 6:50 [PATCH 1/2] input: cyapa: fix sparse warning issue of incorrect type in assiggment Dudley Du
2015-01-22 6:50 ` [PATCH 2/2] input: cyapa: fix variable dereferenced before check 'gen5_pip->resp_len' issue Dudley Du
2015-01-22 16:22 ` Dmitry Torokhov [this message]
2015-01-22 9:31 ` [PATCH 1/2] input: cyapa: fix sparse warning issue of incorrect type in assiggment Jeremiah Mahler
2015-01-22 9:54 ` Dan Carpenter
2015-01-22 9:58 ` Dudley Du
2015-01-23 9:50 ` Jeremiah Mahler
2015-01-22 9:57 ` Dudley Du
2015-01-23 9:56 ` Jeremiah Mahler
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