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imm: Use new parport device model

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Modify imm driver to use the new parallel port device model.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sudip Mukherjee 2016-01-05 18:10:50 +05:30 committed by Martin K. Petersen
parent 7296f62f03
commit a290dd5792
1 changed files with 43 additions and 7 deletions
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50
drivers/scsi/imm.c
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@ -43,6 +43,7 @@ typedef struct {
unsigned dp:1; /* Data phase present */
unsigned rd:1; /* Read data in data phase */
unsigned wanted:1; /* Parport sharing busy flag */
unsigned int dev_no; /* Device number */
wait_queue_head_t *waiting;
struct Scsi_Host *host;
struct list_head list;
@ -1120,15 +1121,40 @@ static struct scsi_host_template imm_template = {
static LIST_HEAD(imm_hosts);
/*
* Finds the first available device number that can be alloted to the
* new imm device and returns the address of the previous node so that
* we can add to the tail and have a list in the ascending order.
*/
static inline imm_struct *find_parent(void)
{
imm_struct *dev, *par = NULL;
unsigned int cnt = 0;
if (list_empty(&imm_hosts))
return NULL;
list_for_each_entry(dev, &imm_hosts, list) {
if (dev->dev_no != cnt)
return par;
cnt++;
par = dev;
}
return par;
}
static int __imm_attach(struct parport *pb)
{
struct Scsi_Host *host;
imm_struct *dev;
imm_struct *dev, *temp;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waiting);
DEFINE_WAIT(wait);
int ports;
int modes, ppb;
int err = -ENOMEM;
struct pardev_cb imm_cb;
init_waitqueue_head(&waiting);
@ -1141,9 +1167,15 @@ static int __imm_attach(struct parport *pb)
dev->mode = IMM_AUTODETECT;
INIT_LIST_HEAD(&dev->list);
dev->dev = parport_register_device(pb, "imm", NULL, imm_wakeup,
NULL, 0, dev);
temp = find_parent();
if (temp)
dev->dev_no = temp->dev_no + 1;
memset(&imm_cb, 0, sizeof(imm_cb));
imm_cb.private = dev;
imm_cb.wakeup = imm_wakeup;
dev->dev = parport_register_dev_model(pb, "imm", &imm_cb, dev->dev_no);
if (!dev->dev)
goto out;
@ -1207,7 +1239,10 @@ static int __imm_attach(struct parport *pb)
host->unique_id = pb->number;
*(imm_struct **)&host->hostdata = dev;
dev->host = host;
list_add_tail(&dev->list, &imm_hosts);
if (!temp)
list_add_tail(&dev->list, &imm_hosts);
else
list_add_tail(&dev->list, &temp->list);
err = scsi_add_host(host, NULL);
if (err)
goto out2;
@ -1245,9 +1280,10 @@ static void imm_detach(struct parport *pb)
}
static struct parport_driver imm_driver = {
.name = "imm",
.attach = imm_attach,
.detach = imm_detach,
.name = "imm",
.match_port = imm_attach,
.detach = imm_detach,
.devmodel = true,
};
static int __init imm_driver_init(void)