[PATCH] pcmcia: unify attach, EVENT_CARD_INSERTION handlers into one probe callback

Unify the EVENT_CARD_INSERTION and "attach" callbacks to one unified
probe() callback. As all in-kernel drivers are changed to this new
callback, there will be no temporary backwards-compatibility. Inside a
probe() function, each driver _must_ set struct pcmcia_device
*p_dev->instance and instance->handle correctly.

With these patches, the basic driver interface for 16-bit PCMCIA drivers
now has the classic four callbacks known also from other buses:

        int (*probe)            (struct pcmcia_device *dev);
        void (*remove)          (struct pcmcia_device *dev);

        int (*suspend)          (struct pcmcia_device *dev);
        int (*resume)           (struct pcmcia_device *dev);

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

6 files changed, 51 insertions, 228 deletions

diff --git a/drivers/scsi/pcmcia/aha152x_stub.c b/drivers/scsi/pcmcia/aha152x_stub.c
index 3128ba8c57a..0c9edb7051f 100644
--- a/drivers/scsi/pcmcia/aha152x_stub.c
+++ b/drivers/scsi/pcmcia/aha152x_stub.c
@@ -95,27 +95,21 @@ typedef struct scsi_info_t {
 } scsi_info_t;
 
 static void aha152x_release_cs(dev_link_t *link);
-static int aha152x_event(event_t event, int priority,
-                         event_callback_args_t *args);
-
-static dev_link_t *aha152x_attach(void);
 static void aha152x_detach(struct pcmcia_device *p_dev);
+static void aha152x_config_cs(dev_link_t *link);
 
 static dev_link_t *dev_list;
-static dev_info_t dev_info = "aha152x_cs";
 
-static dev_link_t *aha152x_attach(void)
+static int aha152x_attach(struct pcmcia_device *p_dev)
 {
     scsi_info_t *info;
-    client_reg_t client_reg;
     dev_link_t *link;
-    int ret;
     
     DEBUG(0, "aha152x_attach()\n");
 
     /* Create new SCSI device */
     info = kmalloc(sizeof(*info), GFP_KERNEL);
-    if (!info) return NULL;
+    if (!info) return -ENOMEM;
     memset(info, 0, sizeof(*info));
     link = &info->link; link->priv = info;
 
@@ -129,20 +123,13 @@ static dev_link_t *aha152x_attach(void)
     link->conf.IntType = INT_MEMORY_AND_IO;
     link->conf.Present = PRESENT_OPTION;
 
-    /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
-    client_reg.dev_info = &dev_info;
-    client_reg.Version = 0x0210;
-    client_reg.event_callback_args.client_data = link;
-    ret = pcmcia_register_client(&link->handle, &client_reg);
-    if (ret != 0) {
-        cs_error(link->handle, RegisterClient, ret);
-        aha152x_detach(link->handle);
-        return NULL;
-    }
-    
-    return link;
+    link->handle = p_dev;
+    p_dev->instance = link;
+
+    link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+    aha152x_config_cs(link);
+
+    return 0;
 } /* aha152x_attach */
 
 /*====================================================================*/
@@ -297,22 +284,6 @@ static int aha152x_resume(struct pcmcia_device *dev)
         return 0;
 }
 
-static int aha152x_event(event_t event, int priority,
-                         event_callback_args_t *args)
-{
-    dev_link_t *link = args->client_data;
-    
-    DEBUG(0, "aha152x_event(0x%06x)\n", event);
-    
-    switch (event) {
-    case CS_EVENT_CARD_INSERTION:
-        link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-        aha152x_config_cs(link);
-        break;
-    }
-    return 0;
-}
-
 static struct pcmcia_device_id aha152x_ids[] = {
         PCMCIA_DEVICE_PROD_ID123("New Media", "SCSI", "Bus Toaster", 0xcdf7e4cc, 0x35f26476, 0xa8851d6e),
         PCMCIA_DEVICE_PROD_ID123("NOTEWORTHY", "SCSI", "Bus Toaster", 0xad89c6e8, 0x35f26476, 0xa8851d6e),
@@ -328,8 +299,7 @@ static struct pcmcia_driver aha152x_cs_driver = {
         .drv            = {
                 .name   = "aha152x_cs",
         },
-        .attach         = aha152x_attach,
-        .event          = aha152x_event,
+        .probe          = aha152x_attach,
         .remove         = aha152x_detach,
         .id_table       = aha152x_ids,
         .suspend        = aha152x_suspend,
diff --git a/drivers/scsi/pcmcia/fdomain_stub.c b/drivers/scsi/pcmcia/fdomain_stub.c
index 538fedb9792..788c58d805f 100644
--- a/drivers/scsi/pcmcia/fdomain_stub.c
+++ b/drivers/scsi/pcmcia/fdomain_stub.c
@@ -80,27 +80,19 @@ typedef struct scsi_info_t {
 
 
 static void fdomain_release(dev_link_t *link);
-static int fdomain_event(event_t event, int priority,
-                        event_callback_args_t *args);
-
-static dev_link_t *fdomain_attach(void);
 static void fdomain_detach(struct pcmcia_device *p_dev);
+static void fdomain_config(dev_link_t *link);
 
-
-static dev_info_t dev_info = "fdomain_cs";
-
-static dev_link_t *fdomain_attach(void)
+static int fdomain_attach(struct pcmcia_device *p_dev)
 {
     scsi_info_t *info;
-    client_reg_t client_reg;
     dev_link_t *link;
-    int ret;
-    
+
     DEBUG(0, "fdomain_attach()\n");
 
     /* Create new SCSI device */
     info = kmalloc(sizeof(*info), GFP_KERNEL);
-    if (!info) return NULL;
+    if (!info) return -ENOMEM;
     memset(info, 0, sizeof(*info));
     link = &info->link; link->priv = info;
     link->io.NumPorts1 = 0x10;
@@ -113,19 +105,13 @@ static dev_link_t *fdomain_attach(void)
     link->conf.IntType = INT_MEMORY_AND_IO;
     link->conf.Present = PRESENT_OPTION;
 
-    /* Register with Card Services */
-    link->next = NULL;
-    client_reg.dev_info = &dev_info;
-    client_reg.Version = 0x0210;
-    client_reg.event_callback_args.client_data = link;
-    ret = pcmcia_register_client(&link->handle, &client_reg);
-    if (ret != 0) {
-        cs_error(link->handle, RegisterClient, ret);
-        fdomain_detach(link->handle);
-        return NULL;
-    }
-    
-    return link;
+    link->handle = p_dev;
+    p_dev->instance = link;
+
+    link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+    fdomain_config(link);
+
+    return 0;
 } /* fdomain_attach */
 
 /*====================================================================*/
@@ -265,23 +251,6 @@ static int fdomain_resume(struct pcmcia_device *dev)
         return 0;
 }
 
-static int fdomain_event(event_t event, int priority,
-                        event_callback_args_t *args)
-{
-    dev_link_t *link = args->client_data;
-
-    DEBUG(1, "fdomain_event(0x%06x)\n", event);
-    
-    switch (event) {
-    case CS_EVENT_CARD_INSERTION:
-        link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-        fdomain_config(link);
-        break;
-    }
-    return 0;
-} /* fdomain_event */
-
-
 static struct pcmcia_device_id fdomain_ids[] = {
         PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88, 0x859cad20),
         PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
@@ -295,8 +264,7 @@ static struct pcmcia_driver fdomain_cs_driver = {
         .drv            = {
                 .name   = "fdomain_cs",
         },
-        .attach         = fdomain_attach,
-        .event          = fdomain_event,
+        .probe          = fdomain_attach,
         .remove         = fdomain_detach,
         .id_table       = fdomain_ids,
         .suspend        = fdomain_suspend,
diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
index e48e9fb3c58..9e3ab3fd535 100644
--- a/drivers/scsi/pcmcia/nsp_cs.c
+++ b/drivers/scsi/pcmcia/nsp_cs.c
@@ -104,8 +104,6 @@ static struct scsi_host_template nsp_driver_template = {
 #endif
 };
 
-static dev_info_t dev_info  = {"nsp_cs"};
-
 static nsp_hw_data nsp_data_base; /* attach <-> detect glue */
 
 
@@ -1595,19 +1593,17 @@ static int nsp_eh_host_reset(Scsi_Cmnd *SCpnt)
     configure the card at this point -- we wait until we receive a
     card insertion event.
 ======================================================================*/
-static dev_link_t *nsp_cs_attach(void)
+static int nsp_cs_attach(struct pcmcia_device *p_dev)
 {
         scsi_info_t  *info;
-        client_reg_t  client_reg;
         dev_link_t   *link;
-        int           ret;
         nsp_hw_data  *data = &nsp_data_base;
 
         nsp_dbg(NSP_DEBUG_INIT, "in");
 
         /* Create new SCSI device */
         info = kmalloc(sizeof(*info), GFP_KERNEL);
-        if (info == NULL) { return NULL; }
+        if (info == NULL) { return -ENOMEM; }
         memset(info, 0, sizeof(*info));
         link = &info->link;
         link->priv = info;
@@ -1635,22 +1631,14 @@ static dev_link_t *nsp_cs_attach(void)
         link->conf.IntType       = INT_MEMORY_AND_IO;
         link->conf.Present       = PRESENT_OPTION;
 
+        link->handle = p_dev;
+        p_dev->instance = link;
 
-        /* Register with Card Services */
-        link->next               = NULL;
-        client_reg.dev_info      = &dev_info;
-        client_reg.Version       = 0x0210;
-        client_reg.event_callback_args.client_data = link;
-        ret = pcmcia_register_client(&link->handle, &client_reg);
-        if (ret != CS_SUCCESS) {
-                cs_error(link->handle, RegisterClient, ret);
-                nsp_cs_detach(link->handle);
-                return NULL;
-        }
-
+        link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+        nsp_cs_config(link);
 
         nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link);
-        return link;
+        return 0;
 } /* nsp_cs_attach */
 
 
@@ -2056,44 +2044,6 @@ static int nsp_cs_resume(struct pcmcia_device *dev)
         return 0;
 }
 
-/*======================================================================
-
-    The card status event handler.  Mostly, this schedules other
-    stuff to run after an event is received.  A CARD_REMOVAL event
-    also sets some flags to discourage the net drivers from trying
-    to talk to the card any more.
-
-    When a CARD_REMOVAL event is received, we immediately set a flag
-    to block future accesses to this device.  All the functions that
-    actually access the device should check this flag to make sure
-    the card is still present.
-
-======================================================================*/
-static int nsp_cs_event(event_t                event,
-                        int                    priority,
-                        event_callback_args_t *args)
-{
-        dev_link_t  *link = args->client_data;
-
-        nsp_dbg(NSP_DEBUG_INIT, "in, event=0x%08x", event);
-
-        switch (event) {
-        case CS_EVENT_CARD_INSERTION:
-                nsp_dbg(NSP_DEBUG_INIT, "event: insert");
-                link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,68))
-                info->bus    =  args->bus;
-#endif
-                nsp_cs_config(link);
-                break;
-        default:
-                nsp_dbg(NSP_DEBUG_INIT, "event: unknown");
-                break;
-        }
-        nsp_dbg(NSP_DEBUG_INIT, "end");
-        return 0;
-} /* nsp_cs_event */
-
 /*======================================================================*
  *      module entry point
  *====================================================================*/
@@ -2115,8 +2065,7 @@ static struct pcmcia_driver nsp_driver = {
         .drv            = {
                 .name   = "nsp_cs",
         },
-        .attach         = nsp_cs_attach,
-        .event          = nsp_cs_event,
+        .probe          = nsp_cs_attach,
         .remove         = nsp_cs_detach,
         .id_table       = nsp_cs_ids,
         .suspend        = nsp_cs_suspend,
diff --git a/drivers/scsi/pcmcia/nsp_cs.h b/drivers/scsi/pcmcia/nsp_cs.h
index d276c469edf..b66b140a745 100644
--- a/drivers/scsi/pcmcia/nsp_cs.h
+++ b/drivers/scsi/pcmcia/nsp_cs.h
@@ -296,11 +296,9 @@ typedef struct _nsp_hw_data {
  */
 
 /* Card service functions */
-static dev_link_t *nsp_cs_attach (void);
 static void        nsp_cs_detach (struct pcmcia_device *p_dev);
 static void        nsp_cs_release(dev_link_t *link);
 static void        nsp_cs_config (dev_link_t *link);
-static int         nsp_cs_event  (event_t event, int priority, event_callback_args_t *args);
 
 /* Linux SCSI subsystem specific functions */
 static struct Scsi_Host *nsp_detect     (struct scsi_host_template *sht);
diff --git a/drivers/scsi/pcmcia/qlogic_stub.c b/drivers/scsi/pcmcia/qlogic_stub.c
index e10281a6e5f..dce7e687fd4 100644
--- a/drivers/scsi/pcmcia/qlogic_stub.c
+++ b/drivers/scsi/pcmcia/qlogic_stub.c
@@ -98,13 +98,8 @@ typedef struct scsi_info_t {
 } scsi_info_t;
 
 static void qlogic_release(dev_link_t *link);
-static int qlogic_event(event_t event, int priority, event_callback_args_t * args);
-
-static dev_link_t *qlogic_attach(void);
 static void qlogic_detach(struct pcmcia_device *p_dev);
-
-
-static dev_info_t dev_info = "qlogic_cs";
+static void qlogic_config(dev_link_t * link);
 
 static struct Scsi_Host *qlogic_detect(struct scsi_host_template *host,
                                 dev_link_t *link, int qbase, int qlirq)
@@ -161,19 +156,17 @@ free_scsi_host:
 err:
         return NULL;
 }
-static dev_link_t *qlogic_attach(void)
+static int qlogic_attach(struct pcmcia_device *p_dev)
 {
         scsi_info_t *info;
-        client_reg_t client_reg;
         dev_link_t *link;
-        int ret;
 
         DEBUG(0, "qlogic_attach()\n");
 
         /* Create new SCSI device */
         info = kmalloc(sizeof(*info), GFP_KERNEL);
         if (!info)
-                return NULL;
+                return -ENOMEM;
         memset(info, 0, sizeof(*info));
         link = &info->link;
         link->priv = info;
@@ -187,19 +180,13 @@ static dev_link_t *qlogic_attach(void)
         link->conf.IntType = INT_MEMORY_AND_IO;
         link->conf.Present = PRESENT_OPTION;
 
-        /* Register with Card Services */
-        link->next = NULL;
-        client_reg.dev_info = &dev_info;
-        client_reg.Version = 0x0210;
-        client_reg.event_callback_args.client_data = link;
-        ret = pcmcia_register_client(&link->handle, &client_reg);
-        if (ret != 0) {
-                cs_error(link->handle, RegisterClient, ret);
-                qlogic_detach(link->handle);
-                return NULL;
-        }
+        link->handle = p_dev;
+        p_dev->instance = link;
+
+        link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+        qlogic_config(link);
 
-        return link;
+        return 0;
 }                               /* qlogic_attach */
 
 /*====================================================================*/
@@ -368,21 +355,6 @@ static int qlogic_resume(struct pcmcia_device *dev)
         return 0;
 }
 
-static int qlogic_event(event_t event, int priority, event_callback_args_t * args)
-{
-        dev_link_t *link = args->client_data;
-
-        DEBUG(1, "qlogic_event(0x%06x)\n", event);
-
-        switch (event) {
-        case CS_EVENT_CARD_INSERTION:
-                link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-                qlogic_config(link);
-                break;
-        }
-        return 0;
-}                               /* qlogic_event */
-
 static struct pcmcia_device_id qlogic_ids[] = {
         PCMCIA_DEVICE_PROD_ID12("EIger Labs", "PCMCIA-to-SCSI Adapter", 0x88395fa7, 0x33b7a5e6),
         PCMCIA_DEVICE_PROD_ID12("EPSON", "SCSI-2 PC Card SC200", 0xd361772f, 0x299d1751),
@@ -410,8 +382,7 @@ static struct pcmcia_driver qlogic_cs_driver = {
         .drv            = {
         .name           = "qlogic_cs",
         },
-        .attach         = qlogic_attach,
-        .event          = qlogic_event,
+        .probe          = qlogic_attach,
         .remove         = qlogic_detach,
         .id_table       = qlogic_ids,
         .suspend        = qlogic_suspend,
diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c
index 87d50b33475..3a4dd6f5b81 100644
--- a/drivers/scsi/pcmcia/sym53c500_cs.c
+++ b/drivers/scsi/pcmcia/sym53c500_cs.c
@@ -228,14 +228,6 @@ enum Phase {
 
 /* ================================================================== */
 
-/*
-*  Global (within this module) variables other than
-*  sym53c500_driver_template (the scsi_host_template).
-*/
-static dev_info_t dev_info = "sym53c500_cs";
-
-/* ================================================================== */
-
 static void
 chip_init(int io_port)
 {
@@ -909,22 +901,6 @@ static int sym53c500_resume(struct pcmcia_device *dev)
         return 0;
 }
 
-static int
-SYM53C500_event(event_t event, int priority, event_callback_args_t *args)
-{
-        dev_link_t *link = args->client_data;
-
-        DEBUG(1, "SYM53C500_event(0x%06x)\n", event);
-
-        switch (event) {
-        case CS_EVENT_CARD_INSERTION:
-                link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-                SYM53C500_config(link);
-                break;
-        }
-        return 0;
-} /* SYM53C500_event */
-
 static void
 SYM53C500_detach(struct pcmcia_device *p_dev)
 {
@@ -939,20 +915,18 @@ SYM53C500_detach(struct pcmcia_device *p_dev)
         link->priv = NULL;
 } /* SYM53C500_detach */
 
-static dev_link_t *
-SYM53C500_attach(void)
+static int
+SYM53C500_attach(struct pcmcia_device *p_dev)
 {
         struct scsi_info_t *info;
-        client_reg_t client_reg;
         dev_link_t *link;
-        int ret;
 
         DEBUG(0, "SYM53C500_attach()\n");
 
         /* Create new SCSI device */
         info = kmalloc(sizeof(*info), GFP_KERNEL);
         if (!info)
-                return NULL;
+                return -ENOMEM;
         memset(info, 0, sizeof(*info));
         link = &info->link;
         link->priv = info;
@@ -966,19 +940,13 @@ SYM53C500_attach(void)
         link->conf.IntType = INT_MEMORY_AND_IO;
         link->conf.Present = PRESENT_OPTION;
 
-        /* Register with Card Services */
-        link->next = NULL;
-        client_reg.dev_info = &dev_info;
-        client_reg.Version = 0x0210;
-        client_reg.event_callback_args.client_data = link;
-        ret = pcmcia_register_client(&link->handle, &client_reg);
-        if (ret != 0) {
-                cs_error(link->handle, RegisterClient, ret);
-                SYM53C500_detach(link->handle);
-                return NULL;
-        }
+        link->handle = p_dev;
+        p_dev->instance = link;
 
-        return link;
+        link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+        SYM53C500_config(link);
+
+        return 0;
 } /* SYM53C500_attach */
 
 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
@@ -998,8 +966,7 @@ static struct pcmcia_driver sym53c500_cs_driver = {
         .drv            = {
                 .name   = "sym53c500_cs",
         },
-        .attach         = SYM53C500_attach,
-        .event          = SYM53C500_event,
+        .probe          = SYM53C500_attach,
         .remove         = SYM53C500_detach,
         .id_table       = sym53c500_ids,
         .suspend        = sym53c500_suspend,