revert "dpt_i2o: convert to SCSI hotplug model"
revert
commit 55d9fcf57ba5ec427544fca7abc335cf3da78160
Author: Matthew Wilcox <matthew@wil.cx>
Date: Mon Jul 30 15:19:18 2007 -0600
[SCSI] dpt_i2o: convert to SCSI hotplug model
- Delete refereces to HOSTS_C
- Switch to module_init/module_exit instead of detect/release
- Don't pass around the host template and rename it to adpt_template
- Switch from scsi_register/scsi_unregister to scsi_host_alloc,
scsi_add_host, scsi_scan_host and scsi_host_put.
Because it caused (for unknown reasons) Andres' all-data-reads-as-zeroes
problem, reported at
http://groups.google.com/group/fa.linux.kernel/msg/083a9acff0330234
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: "Salyzyn, Mark" <mark_salyzyn@adaptec.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Anders Henke <anders.henke@1und1.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 8258506..70f48a1 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -173,20 +173,20 @@
};
MODULE_DEVICE_TABLE(pci,dptids);
-static void adpt_exit(void);
-
-static int adpt_detect(void)
+static int adpt_detect(struct scsi_host_template* sht)
{
struct pci_dev *pDev = NULL;
adpt_hba* pHba;
+ adpt_init();
+
PINFO("Detecting Adaptec I2O RAID controllers...\n");
/* search for all Adatpec I2O RAID cards */
while ((pDev = pci_get_device( PCI_DPT_VENDOR_ID, PCI_ANY_ID, pDev))) {
if(pDev->device == PCI_DPT_DEVICE_ID ||
pDev->device == PCI_DPT_RAPTOR_DEVICE_ID){
- if(adpt_install_hba(pDev) ){
+ if(adpt_install_hba(sht, pDev) ){
PERROR("Could not Init an I2O RAID device\n");
PERROR("Will not try to detect others.\n");
return hba_count-1;
@@ -248,33 +248,34 @@
}
for (pHba = hba_chain; pHba; pHba = pHba->next) {
- if (adpt_scsi_register(pHba) < 0) {
+ if( adpt_scsi_register(pHba,sht) < 0){
adpt_i2o_delete_hba(pHba);
continue;
}
pHba->initialized = TRUE;
pHba->state &= ~DPTI_STATE_RESET;
- scsi_scan_host(pHba->host);
}
// Register our control device node
// nodes will need to be created in /dev to access this
// the nodes can not be created from within the driver
if (hba_count && register_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER, &adpt_fops)) {
- adpt_exit();
+ adpt_i2o_sys_shutdown();
return 0;
}
return hba_count;
}
-static int adpt_release(adpt_hba *pHba)
+/*
+ * scsi_unregister will be called AFTER we return.
+ */
+static int adpt_release(struct Scsi_Host *host)
{
- struct Scsi_Host *shost = pHba->host;
- scsi_remove_host(shost);
+ adpt_hba* pHba = (adpt_hba*) host->hostdata[0];
// adpt_i2o_quiesce_hba(pHba);
adpt_i2o_delete_hba(pHba);
- scsi_host_put(shost);
+ scsi_unregister(host);
return 0;
}
@@ -881,7 +882,7 @@
#endif
-static int adpt_install_hba(struct pci_dev* pDev)
+static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)
{
adpt_hba* pHba = NULL;
@@ -1028,6 +1029,8 @@
mutex_lock(&adpt_configuration_lock);
+ // scsi_unregister calls our adpt_release which
+ // does a quiese
if(pHba->host){
free_irq(pHba->host->irq, pHba);
}
@@ -1079,6 +1082,17 @@
}
+static int adpt_init(void)
+{
+ printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");
+#ifdef REBOOT_NOTIFIER
+ register_reboot_notifier(&adpt_reboot_notifier);
+#endif
+
+ return 0;
+}
+
+
static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun)
{
struct adpt_device* d;
@@ -2164,6 +2178,37 @@
}
+static s32 adpt_scsi_register(adpt_hba* pHba,struct scsi_host_template * sht)
+{
+ struct Scsi_Host *host = NULL;
+
+ host = scsi_register(sht, sizeof(adpt_hba*));
+ if (host == NULL) {
+ printk ("%s: scsi_register returned NULL\n",pHba->name);
+ return -1;
+ }
+ host->hostdata[0] = (unsigned long)pHba;
+ pHba->host = host;
+
+ host->irq = pHba->pDev->irq;
+ /* no IO ports, so don't have to set host->io_port and
+ * host->n_io_port
+ */
+ host->io_port = 0;
+ host->n_io_port = 0;
+ /* see comments in scsi_host.h */
+ host->max_id = 16;
+ host->max_lun = 256;
+ host->max_channel = pHba->top_scsi_channel + 1;
+ host->cmd_per_lun = 1;
+ host->unique_id = (uint) pHba;
+ host->sg_tablesize = pHba->sg_tablesize;
+ host->can_queue = pHba->post_fifo_size;
+
+ return 0;
+}
+
+
static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
{
adpt_hba* pHba;
@@ -3279,10 +3324,12 @@
#endif
-static struct scsi_host_template adpt_template = {
+static struct scsi_host_template driver_template = {
.name = "dpt_i2o",
.proc_name = "dpt_i2o",
.proc_info = adpt_proc_info,
+ .detect = adpt_detect,
+ .release = adpt_release,
.info = adpt_info,
.queuecommand = adpt_queue,
.eh_abort_handler = adpt_abort,
@@ -3297,62 +3344,5 @@
.use_clustering = ENABLE_CLUSTERING,
.use_sg_chaining = ENABLE_SG_CHAINING,
};
-
-static s32 adpt_scsi_register(adpt_hba* pHba)
-{
- struct Scsi_Host *host;
-
- host = scsi_host_alloc(&adpt_template, sizeof(adpt_hba*));
- if (host == NULL) {
- printk ("%s: scsi_host_alloc returned NULL\n",pHba->name);
- return -1;
- }
- host->hostdata[0] = (unsigned long)pHba;
- pHba->host = host;
-
- host->irq = pHba->pDev->irq;
- /* no IO ports, so don't have to set host->io_port and
- * host->n_io_port
- */
- host->io_port = 0;
- host->n_io_port = 0;
- /* see comments in scsi_host.h */
- host->max_id = 16;
- host->max_lun = 256;
- host->max_channel = pHba->top_scsi_channel + 1;
- host->cmd_per_lun = 1;
- host->unique_id = (uint) pHba;
- host->sg_tablesize = pHba->sg_tablesize;
- host->can_queue = pHba->post_fifo_size;
-
- if (scsi_add_host(host, &pHba->pDev->dev)) {
- scsi_host_put(host);
- return -1;
- }
-
- return 0;
-}
-
-static int __init adpt_init(void)
-{
- int count;
-
- printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");
-#ifdef REBOOT_NOTIFIER
- register_reboot_notifier(&adpt_reboot_notifier);
-#endif
-
- count = adpt_detect();
-
- return count > 0 ? 0 : -ENODEV;
-}
-
-static void adpt_exit(void)
-{
- while (hba_chain)
- adpt_release(hba_chain);
-}
-
-module_init(adpt_init);
-module_exit(adpt_exit);
+#include "scsi_module.c"
MODULE_LICENSE("GPL");