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Subject[patch 10/37] PNP: add pnp_alloc_card()
Add pnp_alloc_card() to allocate a struct pnp_card and fill in the
protocol, instance number, and initial PNP ID. Now it is always
valid to use dev_printk() on any pnp_card pointer.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>

---
drivers/pnp/base.h | 1 +
drivers/pnp/card.c | 28 +++++++++++++++++++++++++---
drivers/pnp/isapnp/core.c | 11 ++++-------
3 files changed, 30 insertions(+), 10 deletions(-)
Index: work7/drivers/pnp/base.h
===================================================================
--- work7.orig/drivers/pnp/base.h 2008-03-26 10:54:08.000000000 -0600
+++ work7/drivers/pnp/base.h 2008-03-26 10:54:11.000000000 -0600
@@ -1,6 +1,7 @@
extern spinlock_t pnp_lock;
void *pnp_alloc(long size);
struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *, int id, char *pnpid);
+struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid);
struct pnp_id *pnp_add_id(struct pnp_dev *dev, char *id);
struct pnp_id *pnp_add_card_id(struct pnp_card *card, char *id);
int pnp_interface_attach_device(struct pnp_dev *dev);
Index: work7/drivers/pnp/card.c
===================================================================
--- work7.orig/drivers/pnp/card.c 2008-03-26 10:54:08.000000000 -0600
+++ work7/drivers/pnp/card.c 2008-03-26 10:54:59.000000000 -0600
@@ -151,6 +151,31 @@
kfree(card);
}

+struct pnp_card *pnp_alloc_card(struct pnp_protocol *protocol, int id, char *pnpid)
+{
+ struct pnp_card *card;
+ struct pnp_id *dev_id;
+
+ card = kzalloc(sizeof(struct pnp_card), GFP_KERNEL);
+ if (!card)
+ return NULL;
+
+ card->protocol = protocol;
+ card->number = id;
+
+ card->dev.parent = &card->protocol->dev;
+ sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number,
+ card->number);
+
+ dev_id = pnp_add_card_id(card, pnpid);
+ if (!dev_id) {
+ kfree(card);
+ return NULL;
+ }
+
+ return card;
+}
+
static ssize_t pnp_show_card_name(struct device *dmdev,
struct device_attribute *attr, char *buf)
{
@@ -206,9 +231,6 @@
int error;
struct list_head *pos, *temp;

- sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number,
- card->number);
- card->dev.parent = &card->protocol->dev;
card->dev.bus = NULL;
card->dev.release = &pnp_release_card;
error = device_register(&card->dev);
Index: work7/drivers/pnp/isapnp/core.c
===================================================================
--- work7.orig/drivers/pnp/isapnp/core.c 2008-03-26 10:54:10.000000000 -0600
+++ work7/drivers/pnp/isapnp/core.c 2008-03-26 10:54:11.000000000 -0600
@@ -851,15 +851,13 @@
header[5], header[6], header[7], header[8]);
printk(KERN_DEBUG "checksum = 0x%x\n", checksum);
#endif
- if ((card =
- kzalloc(sizeof(struct pnp_card), GFP_KERNEL)) == NULL)
+ isapnp_to_pnpid((header[1] << 8) | header[0],
+ (header[3] << 8) | header[2], id);
+ card = pnp_alloc_card(&isapnp_protocol, csn, id);
+ if (!card)
continue;

- card->number = csn;
INIT_LIST_HEAD(&card->devices);
- isapnp_to_pnpid((header[1] << 8) | header[0],
- (header[3] << 8) | header[2], id);
- pnp_add_card_id(card, id);
card->serial =
(header[7] << 24) | (header[6] << 16) | (header[5] << 8) |
header[4];
@@ -870,7 +868,6 @@
"isapnp: checksum for device %i is not valid (0x%x)\n",
csn, isapnp_checksum_value);
card->checksum = isapnp_checksum_value;
- card->protocol = &isapnp_protocol;

pnp_add_card(card);
}
--


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