tifm: move common adapter management tasks from tifm_7xx1 to tifm_core

Some details of the adapter management (create, add, remove) are really
belong to the tifm_core, as they are not hardware specific.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

3 files changed, 51 insertions, 45 deletions

diff --git a/drivers/misc/tifm_7xx1.c b/drivers/misc/tifm_7xx1.c
index 34746798ba8e..e051f9da9c5c 100644
--- a/drivers/misc/tifm_7xx1.c
+++ b/drivers/misc/tifm_7xx1.c
@@ -22,6 +22,11 @@
 #define TIFM_IRQ_FIFOMASK(x)      ((x) << 16)
 #define TIFM_IRQ_SETALL           0xffffffff
 
+static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm,
+                                  struct tifm_dev *sock)
+{
+}
+
 static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock)
 {
         unsigned long flags;
@@ -140,7 +145,7 @@ static void tifm_7xx1_switch_media(struct work_struct *work)
         socket_change_set = fm->socket_change_set;
         fm->socket_change_set = 0;
 
-        dev_dbg(fm->dev, "checking media set %x\n",
+        dev_dbg(fm->cdev.dev, "checking media set %x\n",
                 socket_change_set);
 
         if (!socket_change_set) {
@@ -328,20 +333,13 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
 
         pci_intx(dev, 1);
 
-        fm = tifm_alloc_adapter();
+        fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
+                                ? 4 : 2, &dev->dev);
         if (!fm) {
                 rc = -ENOMEM;
                 goto err_out_int;
         }
 
-        fm->dev = &dev->dev;
-        fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
-                          ? 4 : 2;
-        fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->num_sockets,
-                              GFP_KERNEL);
-        if (!fm->sockets)
-                goto err_out_free;
-
         INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
         fm->eject = tifm_7xx1_eject;
         pci_set_drvdata(dev, fm);
@@ -351,7 +349,7 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
         if (!fm->addr)
                 goto err_out_free;
 
-        rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
+        rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
         if (rc)
                 goto err_out_unmap;
 
@@ -359,10 +357,8 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
         if (rc)
                 goto err_out_irq;
 
-        writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
         writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
                fm->addr + FM_SET_INTERRUPT_ENABLE);
-
         return 0;
 
 err_out_irq:
@@ -384,16 +380,12 @@ err_out:
 static void tifm_7xx1_remove(struct pci_dev *dev)
 {
         struct tifm_adapter *fm = pci_get_drvdata(dev);
-        unsigned long flags;
 
+        fm->eject = tifm_7xx1_dummy_eject;
         writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
         mmiowb();
         free_irq(dev->irq, fm);
 
-        spin_lock_irqsave(&fm->lock, flags);
-        fm->socket_change_set = (1 << fm->num_sockets) - 1;
-        spin_unlock_irqrestore(&fm->lock, flags);
-
         tifm_remove_adapter(fm);
 
         pci_set_drvdata(dev, NULL);
diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
index ef8a97b819dd..f0cce2a642df 100644
--- a/drivers/misc/tifm_core.c
+++ b/drivers/misc/tifm_core.c
@@ -156,7 +156,6 @@ static void tifm_free(struct class_device *cdev)
 {
         struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
 
-        kfree(fm->sockets);
         kfree(fm);
 }
 
@@ -165,26 +164,24 @@ static struct class tifm_adapter_class = {
         .release = tifm_free
 };
 
-struct tifm_adapter *tifm_alloc_adapter(void)
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+                                        struct device *dev)
 {
         struct tifm_adapter *fm;
 
-        fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
+        fm = kzalloc(sizeof(struct tifm_adapter)
+                     + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL);
         if (fm) {
                 fm->cdev.class = &tifm_adapter_class;
-                spin_lock_init(&fm->lock);
+                fm->cdev.dev = dev;
                 class_device_initialize(&fm->cdev);
+                spin_lock_init(&fm->lock);
+                fm->num_sockets = num_sockets;
         }
         return fm;
 }
 EXPORT_SYMBOL(tifm_alloc_adapter);
 
-void tifm_free_adapter(struct tifm_adapter *fm)
-{
-        class_device_put(&fm->cdev);
-}
-EXPORT_SYMBOL(tifm_free_adapter);
-
 int tifm_add_adapter(struct tifm_adapter *fm)
 {
         int rc;
@@ -195,31 +192,44 @@ int tifm_add_adapter(struct tifm_adapter *fm)
         spin_lock(&tifm_adapter_lock);
         rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
         spin_unlock(&tifm_adapter_lock);
-        if (!rc) {
-                snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
-                rc = class_device_add(&fm->cdev);
-
-                if (rc) {
-                        spin_lock(&tifm_adapter_lock);
-                        idr_remove(&tifm_adapter_idr, fm->id);
-                        spin_unlock(&tifm_adapter_lock);
-                }
+        if (rc)
+                return rc;
+
+        snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
+        rc = class_device_add(&fm->cdev);
+        if (rc) {
+                spin_lock(&tifm_adapter_lock);
+                idr_remove(&tifm_adapter_idr, fm->id);
+                spin_unlock(&tifm_adapter_lock);
         }
+
         return rc;
 }
 EXPORT_SYMBOL(tifm_add_adapter);
 
 void tifm_remove_adapter(struct tifm_adapter *fm)
 {
+        unsigned int cnt;
+
         flush_workqueue(workqueue);
-        class_device_del(&fm->cdev);
+        for (cnt = 0; cnt < fm->num_sockets; ++cnt) {
+                if (fm->sockets[cnt])
+                        device_unregister(&fm->sockets[cnt]->dev);
+        }
 
         spin_lock(&tifm_adapter_lock);
         idr_remove(&tifm_adapter_idr, fm->id);
         spin_unlock(&tifm_adapter_lock);
+        class_device_del(&fm->cdev);
 }
 EXPORT_SYMBOL(tifm_remove_adapter);
 
+void tifm_free_adapter(struct tifm_adapter *fm)
+{
+        class_device_put(&fm->cdev);
+}
+EXPORT_SYMBOL(tifm_free_adapter);
+
 void tifm_free_device(struct device *dev)
 {
         struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
@@ -234,7 +244,7 @@ struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm)
         if (dev) {
                 spin_lock_init(&dev->lock);
 
-                dev->dev.parent = fm->dev;
+                dev->dev.parent = fm->cdev.dev;
                 dev->dev.bus = &tifm_bus_type;
                 dev->dev.release = tifm_free_device;
                 dev->card_event = tifm_dummy_event;
diff --git a/include/linux/tifm.h b/include/linux/tifm.h
index d9de79275c21..a7bd654e2ee5 100644
--- a/include/linux/tifm.h
+++ b/include/linux/tifm.h
@@ -114,19 +114,23 @@ struct tifm_adapter {
         unsigned int            id;
         unsigned int            num_sockets;
         struct completion       *finish_me;
-        struct tifm_dev         **sockets;
+
         struct work_struct      media_switcher;
         struct class_device     cdev;
-        struct device           *dev;
 
-        void                    (*eject)(struct tifm_adapter *fm, struct tifm_dev *sock);
+        void                    (*eject)(struct tifm_adapter *fm,
+                                         struct tifm_dev *sock);
+
+        struct tifm_dev         *sockets[0];
 };
 
-struct tifm_adapter *tifm_alloc_adapter(void);
-void tifm_free_device(struct device *dev);
-void tifm_free_adapter(struct tifm_adapter *fm);
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+                                        struct device *dev);
 int tifm_add_adapter(struct tifm_adapter *fm);
 void tifm_remove_adapter(struct tifm_adapter *fm);
+void tifm_free_adapter(struct tifm_adapter *fm);
+
+void tifm_free_device(struct device *dev);
 struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm);
 int tifm_register_driver(struct tifm_driver *drv);
 void tifm_unregister_driver(struct tifm_driver *drv);