pciehp: removes redundant NULL write to slot status register

Cleanup to remove a redundant NULL write to SLOTSTATUS.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index eeb517b1b63..0cfaedf2edc 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -777,7 +777,7 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
                 intr_loc |= detected;
                 if (!intr_loc)
                         return IRQ_NONE;
-                if (pciehp_writew(ctrl, SLOTSTATUS, detected)) {
+                if (detected && pciehp_writew(ctrl, SLOTSTATUS, detected)) {
                         err("%s: Cannot write to SLOTSTATUS\n", __func__);
                         return IRQ_NONE;
                 }