ARM: 9160/1: NOMMU: Reload __secondary_data after PROCINFO_INITFUNC

[ Upstream commit 7202216a6f ]

__secondary_data used to reside in r7 around call to
PROCINFO_INITFUNC. After commit 95731b8ee6 ("ARM: 9059/1: cache-v7:
get rid of mini-stack") r7 is used as a scratch register, so we have
to reload __secondary_data before we setup the stack pointer.

Fixes: 95731b8ee6 ("ARM: 9059/1: cache-v7: get rid of mini-stack")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arch/arm/kernel/head-nommu.S

@@ -114,6 +114,7 @@ ENTRY(secondary_startup)
 	add	r12, r12, r10
 	ret	r12
 1:	bl	__after_proc_init
+	ldr	r7, __secondary_data		@ reload r7
 	ldr	sp, [r7, #12]			@ set up the stack pointer
 	mov	fp, #0
 	b	secondary_start_kernel