tree 92a9c3171ffac858e31f9059816b3c7373cc90d9
parent 46964d75b7937c2762edc22c68e5c33c1a16bece
author Xiaoming Ni <nixiaoming@huawei.com> 1637272864 -0800
committer Luis Chamberlain <mcgrof@kernel.org> 1637794344 -0800

printk: fix build warning when CONFIG_PRINTK=n

build warning when CONFIG_PRINTK=n
	kernel/printk/printk.c:175:5: warning: no previous prototype for
	 'devkmsg_sysctl_set_loglvl' [-Wmissing-prototypes]

devkmsg_sysctl_set_loglvl() is only used in sysctl.c when CONFIG_PRINTK=y,
but it participates in the build when CONFIG_PRINTK=n. So add compile
dependency CONFIG_PRINTK=y && CONFIG_SYSCTL=y to fix the build warning.

Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>