[PATCH] ppc64: Remove lpqueue pointer from the paca on iSeries

The iSeries code keeps a pointer to the ItLpQueue in its paca struct. But
all these pointers end up pointing to the one place, ie. xItLpQueue.

So remove the pointer from the paca struct and just refer to xItLpQueue
directly where needed.

The only complication is that the spread_lpevents logic was implemented by
having a NULL lpqueue pointer in the paca on CPUs that weren't supposed to
process events. Instead we just compare the spread_lpevents value to the
processor id to get the same behaviour.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/ppc64/kernel/mf.c b/arch/ppc64/kernel/mf.c
index d98bebf7042f..d6a297a4feb3 100644
--- a/arch/ppc64/kernel/mf.c
+++ b/arch/ppc64/kernel/mf.c
@@ -802,9 +802,8 @@ int mf_get_boot_rtc(struct rtc_time *tm)
         /* We need to poll here as we are not yet taking interrupts */
         while (rtc_data.busy) {
                 extern unsigned long lpevent_count;
-                struct ItLpQueue *lpq = get_paca()->lpqueue_ptr;
-                if (lpq && ItLpQueue_isLpIntPending(lpq))
-                        lpevent_count += ItLpQueue_process(lpq, NULL);
+                if (ItLpQueue_isLpIntPending(&xItLpQueue))
+                        lpevent_count += ItLpQueue_process(&xItLpQueue, NULL);
         }
         return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
 }