ide: fix host drivers missing hwif->chipset initialization

ide_find_port() now depends on ->chipset being set for occupied ide_hwifs[]
slots so all host drivers have to initialize hwif->chipset properly.

This patch fixes a regression on hosts with > 1 port or with a single port
but no devices attached to it for an affected host drivers.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index aaf38109eaec..b38a1980dcd5 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -747,9 +747,11 @@ static int __init cmd640x_init(void)
 
         ide_std_init_ports(&hw[0], 0x1f0, 0x3f6);
         hw[0].irq = 14;
+        hw[0].chipset = ide_cmd640;
 
         ide_std_init_ports(&hw[1], 0x170, 0x376);
         hw[1].irq = 15;
+        hw[1].chipset = ide_cmd640;
 
         printk(KERN_INFO "cmd640: buggy cmd640%c interface on %s, config=0x%02x"
                          "\n", 'a' + cmd640_chip_version - 1, bus_type, cfr);