MIPS: ath79: Fix test for error return of clk_register_fixed_factor().

clk_register_fixed_factor returns an ERR_PTR in case of an error and
should have an IS_ERR check instead of a null check.

The Coccinelle semantic patch used to find this issue is as follows:
@@
expression e;
statement S;
@@

*e = clk_register_fixed_factor(...);
if (!e) S

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Cc: julia.lawall@lip6.fr
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13894/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/ath79/clock.c b/arch/mips/ath79/clock.c
index 2e73784..cc3a1e3 100644 (file)
--- a/arch/mips/ath79/clock.c
+++ b/arch/mips/ath79/clock.c
@@ -96,7 +96,7 @@ static struct clk * __init ath79_reg_ffclk(const char *name,
        struct clk *clk;
 
        clk = clk_register_fixed_factor(NULL, name, parent_name, 0, mult, div);
-       if (!clk)
+       if (IS_ERR(clk))
                panic("failed to allocate %s clock structure", name);
 
        return clk;