linux-kernel - [PATCH] m68k: coldfire: return success for clk

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Message-ID: <20210729122702.GA27150@kili>
Date:   Thu, 29 Jul 2021 15:27:03 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Greg Ungerer <gerg@...ux-m68k.org>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Defang Bo <bodefang@....com>, Steven King <sfking@...dc.com>,
        linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] m68k: coldfire: return success for clk_enable(NULL)

The clk_enable is supposed work when CONFIG_HAVE_CLK is false, but it
returns -EINVAL.  That means some drivers fail during probe.

[    1.680000] flexcan: probe of flexcan.0 failed with error -22

Fixes: c1fb1bf64bb6 ("m68k: let clk_enable() return immediately if clk is NULL")
Fixes: bea8bcb12da0 ("m68knommu: Add support for the Coldfire m5441x.")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
I can't actually compile test this, but it's correct.

 arch/m68k/coldfire/clk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c
index 2ed841e94111..d03b6c4aa86b 100644
--- a/arch/m68k/coldfire/clk.c
+++ b/arch/m68k/coldfire/clk.c
@@ -78,7 +78,7 @@ int clk_enable(struct clk *clk)
 	unsigned long flags;
 
 	if (!clk)
-		return -EINVAL;
+		return 0;
 
 	spin_lock_irqsave(&clk_lock, flags);
 	if ((clk->enabled++ == 0) && clk->clk_ops)
-- 
2.20.1