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[3/4] powerpc/powernv: Fix little endian issues with opal_do_notifier calls

Message ID 20140327162021.4510477c@kryten (mailing list archive)
State Accepted
Commit 56b4c993124d15f3b198cc757ba49a0022b5d695
Delegated to: Benjamin Herrenschmidt
Headers show

Commit Message

Anton Blanchard March 27, 2014, 5:20 a.m. UTC 
The bitmap in opal_poll_events and opal_handle_interrupt is
big endian, so we need to byteswap it on little endian builds.

Signed-off-by: Anton Blanchard <anton@samba.org>
---
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Patch

Index: b/arch/powerpc/platforms/powernv/opal.c
===================================================================
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -216,14 +216,14 @@  void opal_notifier_update_evt(uint64_t e
 void opal_notifier_enable(void)
 {
 	int64_t rc;
-	uint64_t evt = 0;
+	__be64 evt = 0;
 
 	atomic_set(&opal_notifier_hold, 0);
 
 	/* Process pending events */
 	rc = opal_poll_events(&evt);
 	if (rc == OPAL_SUCCESS && evt)
-		opal_do_notifier(evt);
+		opal_do_notifier(be64_to_cpu(evt));
 }
 
 void opal_notifier_disable(void)
@@ -501,7 +501,7 @@  static irqreturn_t opal_interrupt(int ir
 
 	opal_handle_interrupt(virq_to_hw(irq), &events);
 
-	opal_do_notifier(events);
+	opal_do_notifier(be64_to_cpu(events));
 
 	return IRQ_HANDLED;
 }