[ARM] arch/arm/common/sa1111.c: Correct error handling code

If it is reasonable to apply PTR_ERR to the result of calling clk_get, then
that result should first be tested with IS_ERR, not with !.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression E,E1;
@@

if (
-   E == NULL
+   IS_ERR(E)
   ) { <+... when != E = E1
        PTR_ERR(E)
       ...+> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 47ccec9..ef12794 100644 (file)
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -630,7 +630,7 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
                return -ENOMEM;
 
        sachip->clk = clk_get(me, "SA1111_CLK");
-       if (!sachip->clk) {
+       if (IS_ERR(sachip->clk)) {
                ret = PTR_ERR(sachip->clk);
                goto err_free;
        }