[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
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
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