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[5.4,099/475] PM: hibernate: fix __setup handler error handling

Message ID 20220414110857.925925403@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman April 14, 2022, 1:08 p.m. UTC 
From: Randy Dunlap <rdunlap@infradead.org>

[ Upstream commit ba7ffcd4c4da374b0f64666354eeeda7d3827131 ]

If an invalid value is used in "resumedelay=<seconds>", it is
silently ignored. Add a warning message and then let the __setup
handler return 1 to indicate that the kernel command line option
has been handled.

Fixes: 317cf7e5e85e3 ("PM / hibernate: convert simple_strtoul to kstrtoul")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/power/hibernate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 6cafb2e910a1..406b4cbbec5e 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -1216,7 +1216,7 @@  static int __init resumedelay_setup(char *str)
 	int rc = kstrtouint(str, 0, &resume_delay);
 
 	if (rc)
-		return rc;
+		pr_warn("resumedelay: bad option string '%s'\n", str);
 	return 1;
 }