summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/block/paride/pd.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/drivers/block/paride/pd.c')
-rw-r--r--kernel/drivers/block/paride/pd.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/kernel/drivers/block/paride/pd.c b/kernel/drivers/block/paride/pd.c
index d48715b28..562b5a4ca 100644
--- a/kernel/drivers/block/paride/pd.c
+++ b/kernel/drivers/block/paride/pd.c
@@ -247,6 +247,8 @@ static char *pd_errs[17] = { "ERR", "INDEX", "ECC", "DRQ", "SEEK", "WRERR",
"IDNF", "MC", "UNC", "???", "TMO"
};
+static void *par_drv; /* reference of parport driver */
+
static inline int status_reg(struct pd_unit *disk)
{
return pi_read_regr(disk->pi, 1, 6);
@@ -442,7 +444,7 @@ static char *pd_buf; /* buffer for request in progress */
static enum action do_pd_io_start(void)
{
- if (pd_req->cmd_type == REQ_TYPE_SPECIAL) {
+ if (pd_req->cmd_type == REQ_TYPE_DRV_PRIV) {
phase = pd_special;
return pd_special();
}
@@ -721,11 +723,11 @@ static int pd_special_command(struct pd_unit *disk,
struct request *rq;
int err = 0;
- rq = blk_get_request(disk->gd->queue, READ, __GFP_WAIT);
+ rq = blk_get_request(disk->gd->queue, READ, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
- rq->cmd_type = REQ_TYPE_SPECIAL;
+ rq->cmd_type = REQ_TYPE_DRV_PRIV;
rq->special = func;
err = blk_execute_rq(disk->gd->queue, disk->gd, rq, 0);
@@ -872,6 +874,12 @@ static int pd_detect(void)
pd_drive_count++;
}
+ par_drv = pi_register_driver(name);
+ if (!par_drv) {
+ pr_err("failed to register %s driver\n", name);
+ return -1;
+ }
+
if (pd_drive_count == 0) { /* nothing spec'd - so autoprobe for 1 */
disk = pd;
if (pi_init(disk->pi, 1, -1, -1, -1, -1, -1, pd_scratch,
@@ -902,8 +910,10 @@ static int pd_detect(void)
found = 1;
}
}
- if (!found)
+ if (!found) {
printk("%s: no valid drive found\n", name);
+ pi_unregister_driver(par_drv);
+ }
return found;
}