Re: [PATCH] coccinelle: reduce false positives

[Dan Carpenter <dan.carpenter@oracle.com>]

On Thu, Feb 01, 2018 at 12:06:35PM +0100, Julia Lawall wrote:
> Here are the results that are eliminated by my change:
> 
> drivers/clk/axs10x/pll_clock.c:323:1-6 kfree(pll_clk);
> drivers/clk/clk-gpio.c:131:2-7 kfree(clk_gpio);
> drivers/clk/clk-hsdk-pll.c:410:1-6 kfree(pll_clk);
> drivers/clk/hisilicon/clk.c:97:1-6 kfree(clk_data);
> drivers/mfd/syscon.c:130:1-8 iounmap(base);
> drivers/mfd/syscon.c:132:1-6 kfree(syscon);
> drivers/pinctrl/freescale/pinctrl-mxs.c:139:2-7 kfree(group);
> drivers/pinctrl/samsung/pinctrl-exynos5440.c:264:1-6 kfree(gname);
> drivers/platform/chrome/cros_ec_debugfs.c:248:1-6 kfree(msg);
> drivers/pwm/pwm-lp3943.c:56:3-8 kfree(pwm_map);
> 
> The semantic patch is pretty naive in that it assumes that all uses of the
> same name point to the same thing.
> 

Huh...  It leads to false positives but it is an easier way to do cross
function analysis.  I had wondered about that.

regards,
dan carpenter