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31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
From f159ea8ab3bce09a098d0d56c9e8909f385b87aa Mon Sep 17 00:00:00 2001
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From: Axel Lin <axel.lin@ingics.com>
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Date: Thu, 19 Dec 2013 09:30:48 -0300
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Subject: [PATCH 177/203] of/irq: Avoid calling list_first_entry() for empty
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list
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list_first_entry() expects the list is not empty, we need to check if list is
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empty before calling list_first_entry(). Thus use list_first_entry_or_null()
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instead of list_first_entry().
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Signed-off-by: Axel Lin <axel.lin@ingics.com>
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Signed-off-by: Grant Likely <grant.likely@linaro.org>
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---
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drivers/of/irq.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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--- a/drivers/of/irq.c
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+++ b/drivers/of/irq.c
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@@ -488,8 +488,9 @@ void __init of_irq_init(const struct of_
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}
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/* Get the next pending parent that might have children */
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- desc = list_first_entry(&intc_parent_list, typeof(*desc), list);
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- if (list_empty(&intc_parent_list) || !desc) {
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+ desc = list_first_entry_or_null(&intc_parent_list,
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+ typeof(*desc), list);
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+ if (!desc) {
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pr_err("of_irq_init: children remain, but no parents\n");
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break;
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}
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