ide: add IDE_HFLAG_SERIALIZE_DMA host flag

[linux-2.6] / drivers / ide / ide-generic.c

diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 19f63e393d18766f0511f9f04ea178f0f57ab3c9..a6073e248f450df8e09408652024b58dcc348d95 100644 (file)
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -94,7 +94,24 @@ static int __init ide_generic_init(void)
                unsigned long io_addr = ide_default_io_base(i);
                hw_regs_t hw;
 
+               idx[i] = 0xff;
+
                if (io_addr) {
+                       if (!request_region(io_addr, 8, DRV_NAME)) {
+                               printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
+                                               "not free.\n",
+                                               DRV_NAME, io_addr, io_addr + 7);
+                               continue;
+                       }
+
+                       if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
+                               printk(KERN_ERR "%s: I/O resource 0x%lX "
+                                               "not free.\n",
+                                               DRV_NAME, io_addr + 0x206);
+                               release_region(io_addr, 8);
+                               continue;
+                       }
+
                        /*
                         * Skip probing if the corresponding
                         * slot is already occupied.
@@ -111,8 +128,7 @@ static int __init ide_generic_init(void)
                        ide_init_port_hw(hwif, &hw);
 
                        idx[i] = i;
-               } else
-                       idx[i] = 0xff;
+               }
        }
 
        ide_device_add_all(idx, NULL);