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Input: cyapa - fix variable being dereferenced before check

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Fixes the warning regarding variable being dereferenced before check
'gen5_pip->resp_len'.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dudley Du 2015-01-22 08:17:16 -08:00 committed by Dmitry Torokhov
parent 2be7256fe7
commit a535a9f16c
1 changed files with 3 additions and 1 deletions
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4
drivers/input/mouse/cyapa_gen5.c
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@ -2557,7 +2557,9 @@ 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,