ARM: imx6q: resume PL310 only when CACHE_L2X0 defined

Original patch from Lothar Waßmann, this patch fixes a building error
when CONFIG_CACHE_L2X0 is not defined.

Cc: Lothar Waßmann <lw@karo-electronics.de>
Signed-off-by: Eric Miao <eric.miao@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/arch/arm/mach-imx/head-v7.S b/arch/arm/mach-imx/head-v7.S
index a59cae7..cec23a8 100644 (file)
--- a/arch/arm/mach-imx/head-v7.S
+++ b/arch/arm/mach-imx/head-v7.S
@@ -80,6 +80,7 @@ ENDPROC(v7_secondary_startup)
        .data
        .align
 
+#ifdef CONFIG_CACHE_L2X0
        .macro  pl310_resume
        ldr     r2, phys_l2x0_saved_regs
        ldr     r0, [r2, #L2X0_R_PHY_BASE]      @ get physical base of l2x0
@@ -89,13 +90,17 @@ ENDPROC(v7_secondary_startup)
        str     r1, [r0, #L2X0_CTRL]            @ re-enable L2
        .endm
 
+       .globl  phys_l2x0_saved_regs
+phys_l2x0_saved_regs:
+        .long   0
+#else
+       .macro  pl310_resume
+       .endm
+#endif
+
 ENTRY(v7_cpu_resume)
        bl      v7_invalidate_l1
        pl310_resume
        b       cpu_resume
 ENDPROC(v7_cpu_resume)
-
-       .globl  phys_l2x0_saved_regs
-phys_l2x0_saved_regs:
-        .long   0
 #endif

diff --git a/arch/arm/mach-imx/pm-imx6q.c b/arch/arm/mach-imx/pm-imx6q.c
index f20f191..f7b0c2b 100644 (file)
--- a/arch/arm/mach-imx/pm-imx6q.c
+++ b/arch/arm/mach-imx/pm-imx6q.c
@@ -64,7 +64,9 @@ void __init imx6q_pm_init(void)
         * address of the data structure used by l2x0 core to save registers,
         * and later restore the necessary ones in imx6q resume entry.
         */
+#ifdef CONFIG_CACHE_L2X0
        phys_l2x0_saved_regs = __pa(&l2x0_saved_regs);
+#endif
 
        suspend_set_ops(&imx6q_pm_ops);
 }