1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/ide/cmd640.c b/drivers/ide/cmd640.c
index 1683ed5c7329..1a32d62ed86b 100644
--- a/drivers/ide/cmd640.c
+++ b/drivers/ide/cmd640.c
@@ -153,6 +153,7 @@ static int cmd640_vlb;
 #define ARTTIM23        0x57
 #define   ARTTIM23_DIS_RA2      0x04
 #define   ARTTIM23_DIS_RA3      0x08
+#define   ARTTIM23_IDE23INTR    0x10
 #define DRWTIM23        0x58
 #define BRST            0x59
 
@@ -629,12 +630,24 @@ static void cmd640_init_dev(ide_drive_t *drive)
 #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
 }
 
+static int cmd640_test_irq(ide_hwif_t *hwif)
+{
+        struct pci_dev *dev     = to_pci_dev(hwif->dev);
+        int irq_reg             = hwif->channel ? ARTTIM23 : CFR;
+        u8  irq_stat, irq_mask  = hwif->channel ? ARTTIM23_IDE23INTR :
+                                                  CFR_IDE01INTR;
+
+        pci_read_config_byte(dev, irq_reg, &irq_stat);
+
+        return (irq_stat & irq_mask) ? 1 : 0;
+}
 
 static const struct ide_port_ops cmd640_port_ops = {
         .init_dev               = cmd640_init_dev,
 #ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
         .set_pio_mode           = cmd640_set_pio_mode,
 #endif
+        .test_irq               = cmd640_test_irq,
 };
 
 static int pci_conf1(void)