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tty: hvc: fix return value of __setup handler

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[ Upstream commit 53819a0d97aace1425bb042829e3446952a9e8a9 ]

__setup() handlers should return 1 to indicate that the boot option
has been handled or 0 to indicate that it was not handled.
Add a pr_warn() message if the option value is invalid and then
always return 1.

Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Fixes: 86b40567b9 ("tty: replace strict_strtoul() with kstrtoul()")
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Julian Wiedmann <jwi@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220308024228.20477-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Randy Dunlap 2022-03-07 18:42:28 -08:00 • committed by Greg Kroah-Hartman
commit 7c617cb38c
1 changed files with 3 additions and 1 deletions
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4
drivers/tty/hvc/hvc_iucv.c
View file

@ -1470,7 +1470,9 @@ out_error:
*/
static int __init hvc_iucv_config(char *val)
{
return kstrtoul(val, 10, &hvc_iucv_devices);
if (kstrtoul(val, 10, &hvc_iucv_devices))
pr_warn("hvc_iucv= invalid parameter value '%s'\n", val);
return 1;
}