mips: cm: reprime error cause

Vladimir Kondratiev · paulburton · commit 05dc6001af06 · 2019-02-07T11:55:24.000-08:00
Accordingly to the documentation ---cut--- The GCR_ERROR_CAUSE.ERR_TYPE field and the GCR_ERROR_MULT.ERR_TYPE fields can be cleared by either a reset or by writing the current value of GCR_ERROR_CAUSE.ERR_TYPE to the GCR_ERROR_CAUSE.ERR_TYPE register. ---cut--- Do exactly this. Original value of cm_error may be safely written back; it clears error cause and keeps other bits untouched. Fixes: 3885c2b ("MIPS: CM: Add support for reporting CM cache errors") Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@linux.intel.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org # v4.3+
diff --git a/arch/mips/kernel/mips-cm.c b/arch/mips/kernel/mips-cm.c
@@ -457,5 +457,5 @@ void mips_cm_error_report(void)
 	}
 
 	/* reprime cause register */
-	write_gcr_error_cause(0);
+	write_gcr_error_cause(cm_error);
 }

Original file line number	Diff line number	Diff line change
`@@ -457,5 +457,5 @@ void mips_cm_error_report(void)`
`457`	`457`	`}`
`458`	`458`
`459`	`459`	`/* reprime cause register */`
`460`		`- write_gcr_error_cause(0);`
	`460`	`+ write_gcr_error_cause(cm_error);`
`461`	`461`	`}`