On Mon, Jan 07, 2019 at 07:59:00PM +0530, Malathi Gottam wrote:

> +static struct dentry *venus_debugfs_init_drv(void)
> +{
> +     bool ok = false;
> +     struct dentry *dir = NULL;
> +
> +     dir = debugfs_create_dir("venus", NULL);
> +     if (IS_ERR_OR_NULL(dir)) {
> +             dir = NULL;
> +             pr_err("failed to create debug dir");
> +             goto failed_create_dir;
> +     }

Huh?  When does debugfs_create_dir() return ERR_PTR()?

Any interface that mixes returning NULL for error-reporting with returning
ERR_PTR(...) for the same needs to be put out of its misery.  As it happens,
debugfs_create_dir() returns NULL on all errors.  And if you've meant the
above as "future-proofing"... don't do that, please.  That only breeds
confusion down the road, as the code gets cut'n'pasted around.

> -     if (ret)
> +     if (ret) {
> +             dprintk(ERR,
> +                     "Failed to set actual buffer count %d for buffer type 
> %d\n",
> +                     buf_count.count_actual, buf_count.type);
>               return ret;
>  
>       buf_count.type = HFI_BUFFER_OUTPUT;
>       buf_count.count_actual = output_bufs;
>  

*blink*
Does that even compile?

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