From: Julia Lawall <julia.law...@lip6.fr> Delete successive tests to the same location. In this case intc_node has already been tested for being NULL, and calling of_find_node_by_name will not make it NULL. On the other hand, of_find_node_by_name can return NULL on failure.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @s exists@ local idexpression y; expression x,e; @@ *if ( \(x == NULL\|IS_ERR(x)\|y != 0\) ) { ... when forall return ...; } ... when != \(y = e\|y += e\|y -= e\|y |= e\|y &= e\|y++\|y--\|&y\) when != \(XT_GETPAGE(...,y)\|WMI_CMD_BUF(...)\) *if ( \(x == NULL\|IS_ERR(x)\|y != 0\) ) { ... when forall return ...; } // </smpl> Signed-off-by: Julia Lawall <julia.law...@lip6.fr> --- drivers/sh/intc/of_intc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/sh/intc/of_intc.c b/drivers/sh/intc/of_intc.c index 1d5f47e..8dfded3 100644 --- a/drivers/sh/intc/of_intc.c +++ b/drivers/sh/intc/of_intc.c @@ -330,7 +330,7 @@ static int __init of_sh_intc_get_prio(struct device_node *np, reg_node = of_find_node_by_name(intc_node, node_name); - if (!intc_node) { + if (!reg_node) { pr_err("INTC prio register not found\n"); ret = -EINVAL; goto error; @@ -386,7 +386,7 @@ static int __init of_sh_intc_get_sense(struct device_node *np, reg_node = of_find_node_by_name(intc_node, node_name); - if (!intc_node) { + if (!reg_node) { pr_err("INTC senses register not found\n"); ret = -EINVAL; goto error; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
