Thread (7 messages) 7 messages, 3 authors, 2018-07-30

[PATCH v2 1/2] clk: Add of_clk_get_by_name_optional() function

From: geert@linux-m68k.org (Geert Uytterhoeven)
Date: 2018-07-30 11:30:04
Also in: linux-clk, lkml

Hi Andy,

On Mon, Jul 30, 2018 at 12:57 PM Andy Shevchenko
[off-list ref] wrote:
On Mon, 2018-07-30 at 10:55 +0200, Geert Uytterhoeven wrote:
quoted
On Mon, Jul 30, 2018 at 10:36 AM Phil Edworthy
[off-list ref] wrote:
quoted
quoted
+struct clk *of_clk_get_by_name_optional(struct device_node *np,
+                                       const char *name)
+{
+       if (!np)
+               return ERR_PTR(-ENOENT);
Shouldn't this return NULL?
Or let __of_clk_get_by_name() handle that (cfr. above)?

Hmm, of_clk_get_by_name() has a similar check, while the current
__of_clk_get_by_name() already handle np == NULL, too.
This check is needed to prevent NULL pointer dereference below.
Thank, I had missed that unexpected detail.
quoted
quoted
+
+       return __of_clk_get_by_name(np, np->full_name, name, true);
+}
Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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