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[SCSI] aha152x: remove static host array

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Fix this driver not to use a static two element host array instead use
a list.  This should fix panic on multiple eject reinsert of the
pcmcia version of this device.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley 2006-09-14 17:04:58 -05:00 committed by James Bottomley
parent 10d19ae5e1
commit 5fcda42245
1 changed files with 24 additions and 29 deletions
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53
drivers/scsi/aha152x.c
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@ -253,6 +253,7 @@
#include <linux/isapnp.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/list.h>
#include <asm/semaphore.h>
#include <scsi/scsicam.h>
@ -262,6 +263,8 @@
#include <scsi/scsi_transport_spi.h>
#include "aha152x.h"
static LIST_HEAD(aha152x_host_list);
/* DEFINES */
@ -423,8 +426,6 @@ MODULE_DEVICE_TABLE(isapnp, id_table);
#endif /* !PCMCIA */
static int registered_count=0;
static struct Scsi_Host *aha152x_host[2];
static struct scsi_host_template aha152x_driver_template;
/*
@ -541,6 +542,7 @@ struct aha152x_hostdata {
#ifdef __ISAPNP__
struct pnp_dev *pnpdev;
#endif
struct list_head host_list;
};
@ -755,20 +757,9 @@ static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
return ptr;
}
static inline struct Scsi_Host *lookup_irq(int irqno)
{
int i;
for(i=0; i<ARRAY_SIZE(aha152x_host); i++)
if(aha152x_host[i] && aha152x_host[i]->irq==irqno)
return aha152x_host[i];
return NULL;
}
static irqreturn_t swintr(int irqno, void *dev_id, struct pt_regs *regs)
{
struct Scsi_Host *shpnt = lookup_irq(irqno);
struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
if (!shpnt) {
printk(KERN_ERR "aha152x: catched software interrupt %d for unknown controller.\n", irqno);
@ -791,10 +782,11 @@ struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
return NULL;
}
/* need to have host registered before triggering any interrupt */
aha152x_host[registered_count] = shpnt;
memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
/* need to have host registered before triggering any interrupt */
list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
shpnt->io_port = setup->io_port;
shpnt->n_io_port = IO_RANGE;
@ -907,12 +899,10 @@ struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
scsi_scan_host(shpnt);
registered_count++;
return shpnt;
out_host_put:
aha152x_host[registered_count]=NULL;
list_del(&HOSTDATA(shpnt)->host_list);
scsi_host_put(shpnt);
return NULL;
@ -937,6 +927,7 @@ void aha152x_release(struct Scsi_Host *shpnt)
#endif
scsi_remove_host(shpnt);
list_del(&HOSTDATA(shpnt)->host_list);
scsi_host_put(shpnt);
}
@ -1459,9 +1450,12 @@ static struct work_struct aha152x_tq;
*/
static void run(void)
{
int i;
for (i = 0; i<ARRAY_SIZE(aha152x_host); i++) {
is_complete(aha152x_host[i]);
struct aha152x_hostdata *hd;
list_for_each_entry(hd, &aha152x_host_list, host_list) {
struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
is_complete(shost);
}
}
@ -1471,7 +1465,7 @@ static void run(void)
*/
static irqreturn_t intr(int irqno, void *dev_id, struct pt_regs *regs)
{
struct Scsi_Host *shpnt = lookup_irq(irqno);
struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
unsigned long flags;
unsigned char rev, dmacntrl0;
@ -3953,16 +3947,17 @@ static int __init aha152x_init(void)
#endif
}
return registered_count>0;
return 1;
}
static void __exit aha152x_exit(void)
{
int i;
struct aha152x_hostdata *hd;
for(i=0; i<ARRAY_SIZE(setup); i++) {
aha152x_release(aha152x_host[i]);
aha152x_host[i]=NULL;
list_for_each_entry(hd, &aha152x_host_list, host_list) {
struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
aha152x_release(shost);
}
}