From: Helge Deller <deller@gmx.de>
Date: Fri, 14 Aug 2020 13:14:12 +0000 (+0200)
Subject: parisc: Avoid external interrupts when IPI finishes
X-Git-Tag: v5.10-rc1~111^2~15
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f4d0d40cd1f19104e4f60537973ff5ac2f90123e;p=thirdparty%2Fkernel%2Flinux.git

parisc: Avoid external interrupts when IPI finishes

No need to allow external interrupts when the IPI loop is going to
finish now.

Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 6271139d2213a..10227f667c8a6 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -173,9 +173,12 @@ ipi_interrupt(int irq, void *dev_id)
 					this_cpu, which);
 				return IRQ_NONE;
 			} /* Switch */
-		/* let in any pending interrupts */
-		local_irq_enable();
-		local_irq_disable();
+
+			/* before doing more, let in any pending interrupts */
+			if (ops) {
+				local_irq_enable();
+				local_irq_disable();
+			}
 		} /* while (ops) */
 	}
 	return IRQ_HANDLED;