cmd640: manage I/O resources in driver
* Tell IDE layer to not manage resources by setting hwif->mmio flag.
* Use {request,release}_region() for resources management.
* Use driver name for resources management.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index de1bbdc..1a60d70 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -109,6 +109,8 @@
#include <asm/io.h>
+#define DRV_NAME "cmd640"
+
/*
* This flag is set in ide.c by the parameter: ide0=cmd640_vlb
*/
@@ -686,6 +688,24 @@
#endif
};
+static int cmd640x_init_one(unsigned long base, unsigned long ctl)
+{
+ if (!request_region(base, 8, DRV_NAME)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+ DRV_NAME, base, base + 7);
+ return -EBUSY;
+ }
+
+ if (!request_region(ctl, 1, DRV_NAME)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+ DRV_NAME, ctl);
+ release_region(base, 8);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
/*
* Probe for a cmd640 chipset, and initialize it if found.
*/
@@ -694,7 +714,7 @@
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
int second_port_toggled = 0;
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
- int second_port_cmd640 = 0;
+ int second_port_cmd640 = 0, rc;
const char *bus_type, *port2;
unsigned int index;
u8 b, cfr;
@@ -738,6 +758,17 @@
return 0;
}
+ rc = cmd640x_init_one(0x1f0, 0x3f6);
+ if (rc)
+ return rc;
+
+ rc = cmd640x_init_one(0x170, 0x376);
+ if (rc) {
+ release_region(0x3f6, 1);
+ release_region(0x1f0, 8);
+ return rc;
+ }
+
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw[0], 0x1f0, 0x3f6);
@@ -756,7 +787,7 @@
*/
if (cmd_hwif0) {
ide_init_port_hw(cmd_hwif0, &hw[0]);
-
+ cmd_hwif0->mmio = 1;
idx[0] = cmd_hwif0->index;
}
@@ -809,7 +840,7 @@
*/
if (second_port_cmd640 && cmd_hwif1) {
ide_init_port_hw(cmd_hwif1, &hw[1]);
-
+ cmd_hwif1->mmio = 1;
idx[1] = cmd_hwif1->index;
}
printk(KERN_INFO "cmd640: %sserialized, secondary interface %s\n",