[PATCH 4.19 281/361] powerpc/msi: Fix compile error on mpc83xx

From: Greg Kroah-Hartman
Date: Sun Nov 11 2018 - 18:49:06 EST


4.19-stable review patch. If anyone has any objections, please let me know.

------------------

From: Christophe Leroy <christophe.leroy@xxxxxx>

commit 0f99153def98134403c9149128e59d3e1786cf04 upstream.

mpic_get_primary_version() is not defined when not using MPIC.
The compile error log like:

arch/powerpc/sysdev/built-in.o: In function `fsl_of_msi_probe':
fsl_msi.c:(.text+0x150c): undefined reference to `fsl_mpic_primary_get_version'

Signed-off-by: Jia Hongtao <hongtao.jia@xxxxxxxxxxxxx>
Signed-off-by: Scott Wood <scottwood@xxxxxxxxxxxxx>
Reported-by: Radu Rendec <radu.rendec@xxxxxxxxx>
Fixes: 807d38b73b6 ("powerpc/mpic: Add get_version API both for internal and external use")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
arch/powerpc/include/asm/mpic.h | 7 +++++++
1 file changed, 7 insertions(+)

--- a/arch/powerpc/include/asm/mpic.h
+++ b/arch/powerpc/include/asm/mpic.h
@@ -393,7 +393,14 @@ extern struct bus_type mpic_subsys;
#define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */

/* Get the version of primary MPIC */
+#ifdef CONFIG_MPIC
extern u32 fsl_mpic_primary_get_version(void);
+#else
+static inline u32 fsl_mpic_primary_get_version(void)
+{
+ return 0;
+}
+#endif

/* Allocate the controller structure and setup the linux irq descs
* for the range if interrupts passed in. No HW initialization is