• Julia Lawall's avatar
    drivers/gpio/gpio-langwell.c: fix error return code · d6a2b7ba
    Julia Lawall authored
    Convert a 0 error return code to a negative one, as returned elsewhere in the
    function.
    
    A simplified version of the semantic match that finds this problem is as
    follows: (http://coccinelle.lip6.fr/)
    
    // <smpl>
    @@
    identifier ret;
    expression e,e1,e2,e3,e4,x;
    @@
    
    (
    if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
    |
    ret = 0
    )
    ... when != ret = e1
    *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
    ... when != x = e2
        when != ret = e3
    *if (x == NULL || ...)
    {
      ... when != ret = e4
    *  return ret;
    }
    // </smpl>
    Signed-off-by: default avatarJulia Lawall <julia@diku.dk>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    d6a2b7ba
gpio-langwell.c 12.5 KB