ide: add 'init_default' and 'restore' arguments to ide_unregister()

* Add 'init_default' (flag for calling init_hwif_default()) and 'restore'
  (flag for calling ide_hwif_restore()) arguments to ide_unregister().

* Update ide_unregister() users to set 'init_default' and 'restore' flags.

* No need to set 'init_default' flag in ide_register_hw() if the setup done
  by init_hwif_default() is going to be overridden by ide_init_port_hw().

* No need to set 'init_default' and 'restore' flags in cleanup_module().

There should be no functionality changes caused by this patch.

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

10 files changed, 25 insertions, 18 deletions

diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index b30adcf321c3..823d3331318d 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -76,7 +76,7 @@ static void __devexit rapide_remove(struct expansion_card *ec)
 
         ecard_set_drvdata(ec, NULL);
 
-        ide_unregister(hwif->index);
+        ide_unregister(hwif->index, 1, 1);
 
         ecard_release_resources(ec);
 }
diff --git a/drivers/ide/ide-pnp.c b/drivers/ide/ide-pnp.c
index 61c33ef64bda..a766bdbbad38 100644
--- a/drivers/ide/ide-pnp.c
+++ b/drivers/ide/ide-pnp.c
@@ -60,9 +60,10 @@ static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id
 static void idepnp_remove(struct pnp_dev * dev)
 {
         ide_hwif_t *hwif = pnp_get_drvdata(dev);
-        if (hwif) {
-                ide_unregister(hwif->index);
-        } else
+
+        if (hwif)
+                ide_unregister(hwif->index, 1, 1);
+        else
                 printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
 }
 
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 4b130e7102eb..166acd513d5b 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -499,6 +499,8 @@ void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
 /**
  *      ide_unregister          -       free an IDE interface
  *      @index: index of interface (will change soon to a pointer)
+ *      @init_default: init default hwif flag
+ *      @restore: restore hwif flag
  *
  *      Perform the final unregister of an IDE interface. At the moment
  *      we don't refcount interfaces so this will also get split up.
@@ -518,7 +520,7 @@ void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
  *      This is raving bonkers.
  */
 
-void ide_unregister(unsigned int index)
+void ide_unregister(unsigned int index, int init_default, int restore)
 {
         ide_drive_t *drive;
         ide_hwif_t *hwif, *g;
@@ -602,9 +604,12 @@ void ide_unregister(unsigned int index)
 
         /* restore hwif data to pristine status */
         ide_init_port_data(hwif, index);
-        init_hwif_default(hwif, index);
 
-        ide_hwif_restore(hwif, &tmp_hwif);
+        if (init_default)
+                init_hwif_default(hwif, index);
+
+        if (restore)
+                ide_hwif_restore(hwif, &tmp_hwif);
 
 abort:
         spin_unlock_irq(&ide_lock);
@@ -710,12 +715,12 @@ int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *),
                                 goto found;
                 }
                 for (index = 0; index < MAX_HWIFS; index++)
-                        ide_unregister(index);
+                        ide_unregister(index, 1, 1);
         } while (retry--);
         return -1;
 found:
         if (hwif->present)
-                ide_unregister(index);
+                ide_unregister(index, 0, 1);
         else if (!hwif->hold)
                 ide_init_port_data(hwif, index);
 
@@ -1058,7 +1063,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
                 case HDIO_UNREGISTER_HWIF:
                         if (!capable(CAP_SYS_RAWIO)) return -EACCES;
                         /* (arg > MAX_HWIFS) checked in function */
-                        ide_unregister(arg);
+                        ide_unregister(arg, 1, 1);
                         return 0;
                 case HDIO_SET_NICE:
                         if (!capable(CAP_SYS_ADMIN)) return -EACCES;
@@ -1703,7 +1708,7 @@ void __exit cleanup_module (void)
         int index;
 
         for (index = 0; index < MAX_HWIFS; ++index)
-                ide_unregister(index);
+                ide_unregister(index, 0, 0);
 
         proc_ide_destroy();
 
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index 3bd29676ef6a..2d772e2bebb3 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -337,7 +337,7 @@ void ide_release(struct pcmcia_device *link)
     if (info->ndev) {
         /* FIXME: if this fails we need to queue the cleanup somehow
            -- need to investigate the required PCMCIA magic */
-        ide_unregister(info->hd);
+        ide_unregister(info->hd, 1, 1);
     }
     info->ndev = 0;
 
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
index 7c7f42a1fffa..c0dd67f4af32 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -122,7 +122,7 @@ static int __devexit plat_ide_remove(struct platform_device *pdev)
 {
         ide_hwif_t *hwif = pdev->dev.driver_data;
 
-        ide_unregister(hwif->index);
+        ide_unregister(hwif->index, 1, 1);
 
         return 0;
 }
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index b80d77a260da..66a675a10f13 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -678,7 +678,7 @@ static int au_ide_remove(struct device *dev)
         ide_hwif_t *hwif = dev_get_drvdata(dev);
         _auide_hwif *ahwif = &auide_hwif;
 
-        ide_unregister(hwif->index);
+        ide_unregister(hwif->index, 1, 1);
 
         iounmap((void *)ahwif->regbase);
 
diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/pci/delkin_cb.c
index 3fdf5e5a6fbe..4e9ebaa79624 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -99,7 +99,8 @@ delkin_cb_remove (struct pci_dev *dev)
         ide_hwif_t *hwif = pci_get_drvdata(dev);
 
         if (hwif)
-                ide_unregister(hwif->index);
+                ide_unregister(hwif->index, 1, 1);
+
         pci_disable_device(dev);
 }
 
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 085c1b58a99c..7e52a55c86cc 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -736,7 +736,7 @@ static void __devexit scc_remove(struct pci_dev *dev)
                 hwif->dmatable_cpu = NULL;
         }
 
-        ide_unregister(hwif->index);
+        ide_unregister(hwif->index, 1, 1);
 
         hwif->chipset = ide_unknown;
         iounmap((void*)ports->dma);
diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index 18dde2a27209..de9ebbfbf122 100644
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -595,7 +595,7 @@ static void media_bay_step(int i)
                 if (bay->cd_index >= 0) {
                         printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i,
                                bay->cd_index);
-                        ide_unregister(bay->cd_index);
+                        ide_unregister(bay->cd_index, 1, 1);
                         bay->cd_index = -1;
                 }
                 if (bay->cd_retry) {
diff --git a/include/linux/ide.h b/include/linux/ide.h
index f7fe8b1fe681..8ae0480af008 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1208,7 +1208,7 @@ static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
 void ide_remove_port_from_hwgroup(ide_hwif_t *);
 extern int ide_hwif_request_regions(ide_hwif_t *hwif);
 extern void ide_hwif_release_regions(ide_hwif_t* hwif);
-extern void ide_unregister (unsigned int index);
+void ide_unregister(unsigned int, int, int);
 
 void ide_register_region(struct gendisk *);
 void ide_unregister_region(struct gendisk *);