This is a note to let you know that I've just added the patch titled MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B) to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mips-cpu-probe-fix-fpu-detection-on-ingenic-jz4760-b.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit b46f22867dd58d431d457e0786a46f768946a3e2 Author: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Date: Sun May 30 18:17:57 2021 +0100 MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B) [ Upstream commit fc52f92a653215fbd6bc522ac5311857b335e589 ] Ingenic JZ4760 and JZ4760B do have a FPU, but the config registers don't report it. Force the FPU detection in case the processor ID match the JZ4760(B) one. Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index e6ae2bcdbeda..067cb3eb1614 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1827,6 +1827,11 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu) */ case PRID_COMP_INGENIC_D0: c->isa_level &= ~MIPS_CPU_ISA_M32R2; + + /* FPU is not properly detected on JZ4760(B). */ + if (c->processor_id == 0x2ed0024f) + c->options |= MIPS_CPU_FPU; + fallthrough; /*