[media] smipcie: return more proper value in interrupt handler

Although IRQ_HANDLED is "safe" value to return,
it is better to let the kernel know whether the driver handle the interrupt or not.

Signed-off-by: Nibble Max <nibble.max@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/media/pci/smipcie/smipcie.c b/drivers/media/pci/smipcie/smipcie.c
index f773350e67b9..36c8ed77309c 100644
--- a/drivers/media/pci/smipcie/smipcie.c
+++ b/drivers/media/pci/smipcie/smipcie.c
@@ -448,16 +448,19 @@ static void smi_port_exit(struct smi_port *port)
         port->enable = 0;
 }
 
-static void smi_port_irq(struct smi_port *port, u32 int_status)
+static int smi_port_irq(struct smi_port *port, u32 int_status)
 {
         u32 port_req_irq = port->_dmaInterruptCH0 | port->_dmaInterruptCH1;
+        int handled = 0;
 
         if (int_status & port_req_irq) {
                 smi_port_disableInterrupt(port);
                 port->_int_status = int_status;
                 smi_port_clearInterrupt(port);
                 tasklet_schedule(&port->tasklet);
+                handled = 1;
         }
+        return handled;
 }
 
 static irqreturn_t smi_irq_handler(int irq, void *dev_id)
@@ -465,18 +468,19 @@ static irqreturn_t smi_irq_handler(int irq, void *dev_id)
         struct smi_dev *dev = dev_id;
         struct smi_port *port0 = &dev->ts_port[0];
         struct smi_port *port1 = &dev->ts_port[1];
+        int handled = 0;
 
         u32 intr_status = smi_read(MSI_INT_STATUS);
 
         /* ts0 interrupt.*/
         if (dev->info->ts_0)
-                smi_port_irq(port0, intr_status);
+                handled += smi_port_irq(port0, intr_status);
 
         /* ts1 interrupt.*/
         if (dev->info->ts_1)
-                smi_port_irq(port1, intr_status);
+                handled += smi_port_irq(port1, intr_status);
 
-        return IRQ_HANDLED;
+        return IRQ_RETVAL(handled);
 }
 
 static struct i2c_client *smi_add_i2c_client(struct i2c_adapter *adapter,