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-rw-r--r--arch/powerpc/include/asm/opal-api.h2
-rw-r--r--arch/powerpc/include/asm/xive.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
index 1dffa3cb16ba..48ee604ca39a 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -1091,7 +1091,7 @@ enum {
OPAL_XIVE_IRQ_TRIGGER_PAGE = 0x00000001,
OPAL_XIVE_IRQ_STORE_EOI = 0x00000002,
OPAL_XIVE_IRQ_LSI = 0x00000004,
- OPAL_XIVE_IRQ_SHIFT_BUG = 0x00000008,
+ OPAL_XIVE_IRQ_SHIFT_BUG = 0x00000008, /* P9 DD1.0 workaround */
OPAL_XIVE_IRQ_MASK_VIA_FW = 0x00000010,
OPAL_XIVE_IRQ_EOI_VIA_FW = 0x00000020,
};
diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
index d332dd9a18de..b3c039d0bb6e 100644
--- a/arch/powerpc/include/asm/xive.h
+++ b/arch/powerpc/include/asm/xive.h
@@ -60,7 +60,7 @@ struct xive_irq_data {
};
#define XIVE_IRQ_FLAG_STORE_EOI 0x01
#define XIVE_IRQ_FLAG_LSI 0x02
-#define XIVE_IRQ_FLAG_SHIFT_BUG 0x04
+/* #define XIVE_IRQ_FLAG_SHIFT_BUG 0x04 */ /* P9 DD1.0 workaround */
#define XIVE_IRQ_FLAG_MASK_FW 0x08
#define XIVE_IRQ_FLAG_EOI_FW 0x10
#define XIVE_IRQ_FLAG_H_INT_ESB 0x20