Modify ppa driver to use the new parallel port device model.
Signed-off-by: Sudip Mukherjee <su...@vectorindia.org>
---
Resending as there was no review or ACK for this change.
This has exactly same changes as done in scsi/imm.c which has already
been accepted.
drivers/scsi/ppa.c | 46 ++++++++++++++++++++++++++++++++++++++++------
1 file changed, 40 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c
index ee00e27..f6ad579 100644
--- a/drivers/scsi/ppa.c
+++ b/drivers/scsi/ppa.c
@@ -37,6 +37,7 @@ typedef struct {
unsigned long recon_tmo; /* How many usecs to wait for
reconnection (6th bit) */
unsigned int failed:1; /* Failure flag */
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;
@@ -985,15 +986,40 @@ static struct scsi_host_template ppa_template = {
static LIST_HEAD(ppa_hosts);
+/*
+ * Finds the first available device number that can be alloted to the
+ * new ppa 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 ppa_struct *find_parent(void)
+{
+ ppa_struct *dev, *par = NULL;
+ unsigned int cnt = 0;
+
+ if (list_empty(&ppa_hosts))
+ return NULL;
+
+ list_for_each_entry(dev, &ppa_hosts, list) {
+ if (dev->dev_no != cnt)
+ return par;
+ cnt++;
+ par = dev;
+ }
+
+ return par;
+}
+
static int __ppa_attach(struct parport *pb)
{
struct Scsi_Host *host;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waiting);
DEFINE_WAIT(wait);
- ppa_struct *dev;
+ ppa_struct *dev, *temp;
int ports;
int modes, ppb, ppb_hi;
int err = -ENOMEM;
+ struct pardev_cb ppa_cb;
dev = kzalloc(sizeof(ppa_struct), GFP_KERNEL);
if (!dev)
@@ -1002,8 +1028,15 @@ static int __ppa_attach(struct parport *pb)
dev->mode = PPA_AUTODETECT;
dev->recon_tmo = PPA_RECON_TMO;
init_waitqueue_head(&waiting);
- dev->dev = parport_register_device(pb, "ppa", NULL, ppa_wakeup,
- NULL, 0, dev);
+ temp = find_parent();
+ if (temp)
+ dev->dev_no = temp->dev_no + 1;
+
+ memset(&ppa_cb, 0, sizeof(ppa_cb));
+ ppa_cb.private = dev;
+ ppa_cb.wakeup = ppa_wakeup;
+
+ dev->dev = parport_register_dev_model(pb, "ppa", &ppa_cb, dev->dev_no);
if (!dev->dev)
goto out;
@@ -1110,9 +1143,10 @@ static void ppa_detach(struct parport *pb)
}
static struct parport_driver ppa_driver = {
- .name = "ppa",
- .attach = ppa_attach,
- .detach = ppa_detach,
+ .name = "ppa",
+ .match_port = ppa_attach,
+ .detach = ppa_detach,
+ .devmodel = true,
};
static int __init ppa_driver_init(void)
--
1.9.1
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