[PATCH 4.4 014/312] MIPS: BMIPS: BMIPS5000 has I cache filing from D cache

Greg Kroah-Hartman <[email protected]> Fri, 8 May 2020 14:30:05 +0200
Newsgroups gmane.linux.kernel,gmane.linux.kernel.stable,gmane.linux.ports.mips.general
Message-ID <[email protected]>
From: Florian Fainelli <[email protected]>

commit c130d2fd3d59fbd5d269f7d5827bd4ed1d94aec6 upstream.

BMIPS5000 and BMIPS52000 processors have their I-cache filling from the
D-cache. Since BMIPS_GENERIC does not provide (yet) a
cpu-feature-overrides.h file, this was not set anywhere, so make sure
the R4K cache detection takes care of that.

Fixes: d74b0172e4e2c ("MIPS: BMIPS: Add special cache handling in c-r4k.c")
Signed-off-by: Florian Fainelli <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/13010/
Signed-off-by: Ralf Baechle <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 arch/mips/mm/c-r4k.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1308,6 +1308,10 @@ static void probe_pcache(void)
 		c->icache.flags |= MIPS_CACHE_IC_F_DC;
 		break;
 
+	case CPU_BMIPS5000:
+		c->icache.flags |= MIPS_CACHE_IC_F_DC;
+		break;
+
 	case CPU_LOONGSON2:
 		/*
 		 * LOONGSON2 has 4 way icache, but when using indexed cache op,