4.9-stable review patch. If anyone has any objections, please let me know.
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From: James Hogan jhogan@kernel.org
[ 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 jhogan@kernel.org Reviewed-by: Paul Burton paul.burton@mips.com Reviewed-by: Matt Redfearn matt.redfearn@mips.com Cc: Ralf Baechle ralf@linux-mips.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/18580/ Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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; }