1 files changed, 1 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/irq/ipr.c b/arch/sh/kernel/cpu/irq/ipr.c
index 808d99a48efb..c1508a90fc6a 100644
--- a/arch/sh/kernel/cpu/irq/ipr.c
+++ b/arch/sh/kernel/cpu/irq/ipr.c
@@ -35,6 +35,7 @@ static void disable_ipr_irq(unsigned int irq)
         unsigned long addr = get_ipr_desc(irq)->ipr_offsets[p->ipr_idx];
         /* Set the priority in IPR to 0 */
         __raw_writew(__raw_readw(addr) & (0xffff ^ (0xf << p->shift)), addr);
+        (void)__raw_readw(addr);        /* Read back to flush write posting */
 }
 
 static void enable_ipr_irq(unsigned int irq)