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

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

From: James Hogan <[email protected]>

[ Upstream commit 9a9ab3078e2744a1a55163cfaec73a5798aae33e ]

We now have a platform (Ranchu) in the "generic" platform which matches
based on the FDT compatible string using mips_machine_is_compatible(),
however that function doesn't stop at a blank struct
of_device_id::compatible as that is an array in the struct, not a
pointer to a string.

Fix the loop completion to check the first byte of the compatible array
rather than the address of the compatible array in the struct.

Fixes: eed0eabd12ef ("MIPS: generic: Introduce generic DT-based board support")
Signed-off-by: James Hogan <[email protected]>
Reviewed-by: Paul Burton <[email protected]>
Reviewed-by: Matt Redfearn <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/18580/
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 arch/mips/include/asm/machine.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/include/asm/machine.h
+++ b/arch/mips/include/asm/machine.h
@@ -52,7 +52,7 @@ mips_machine_is_compatible(const struct
        if (!mach->matches)
                return NULL;
 
-       for (match = mach->matches; match->compatible; match++) {
+       for (match = mach->matches; match->compatible[0]; match++) {
                if (fdt_node_check_compatible(fdt, 0, match->compatible) == 0)
                        return match;
        }


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