[PATCH] arm: simplify two-level sysctl registration for ctl_isa_vars

[Luis Chamberlain]

There is no need to declare two tables to just create directories,
this can be easily be done with a prefix path with register_sysctl().

Simplify this registration.

Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---

For more details see the new docs being updated [0].

[0] https://lore.kernel.org/all/20230310223947.3917711-1-mcgrof@xxxxxxxxxx/T/#u     

 arch/arm/kernel/isa.c | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c
index d8a509c5d5bd..20218876bef2 100644
--- a/arch/arm/kernel/isa.c
+++ b/arch/arm/kernel/isa.c
@@ -40,27 +40,11 @@ static struct ctl_table ctl_isa_vars[4] = {
 
 static struct ctl_table_header *isa_sysctl_header;
 
-static struct ctl_table ctl_isa[2] = {
-	{
-		.procname	= "isa",
-		.mode		= 0555,
-		.child		= ctl_isa_vars,
-	}, {}
-};
-
-static struct ctl_table ctl_bus[2] = {
-	{
-		.procname	= "bus",
-		.mode		= 0555,
-		.child		= ctl_isa,
-	}, {}
-};
-
 void __init
 register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
 {
 	isa_membase = membase;
 	isa_portbase = portbase;
 	isa_portshift = portshift;
-	isa_sysctl_header = register_sysctl_table(ctl_bus);
+	isa_sysctl_header = register_sysctl("bus/isa", ctl_isa_vars);
 }
-- 
2.39.1