4.19-stable review patch. If anyone has any objections, please let me know.
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From: Lubomir Rintel lkundrak@v3.sk
commit 76f4e2c3b6a560cdd7a75b87df543e04d05a9e5f upstream.
cpu_is_mmp2() was equivalent to cpu_is_pj4(), wouldn't be correct for multiplatform kernels. Fix it by also considering mmp_chip_id, as is done for cpu_is_pxa168() and cpu_is_pxa910() above.
Moreover, it is only available with CONFIG_CPU_MMP2 and thus doesn't work on DT-based MMP2 machines. Enable it on CONFIG_MACH_MMP2_DT too.
Note: CONFIG_CPU_MMP2 is only used for machines that use board files instead of DT. It should perhaps be renamed. I'm not doing it now, because I don't have a better idea.
Signed-off-by: Lubomir Rintel lkundrak@v3.sk Acked-by: Arnd Bergmann arnd@arndb.de Cc: stable@vger.kernel.org Signed-off-by: Olof Johansson olof@lixom.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm/mach-mmp/cputype.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/arm/mach-mmp/cputype.h +++ b/arch/arm/mach-mmp/cputype.h @@ -44,10 +44,12 @@ static inline int cpu_is_pxa910(void) #define cpu_is_pxa910() (0) #endif
-#ifdef CONFIG_CPU_MMP2 +#if defined(CONFIG_CPU_MMP2) || defined(CONFIG_MACH_MMP2_DT) static inline int cpu_is_mmp2(void) { - return (((read_cpuid_id() >> 8) & 0xff) == 0x58); + return (((read_cpuid_id() >> 8) & 0xff) == 0x58) && + (((mmp_chip_id & 0xfff) == 0x410) || + ((mmp_chip_id & 0xfff) == 0x610)); } #else #define cpu_is_mmp2() (0)