PNP: change pnp_add_id() to allocate its own pnp_id structures

This moves some of the pnp_id knowledge out of the backends and into
the PNP core.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-By: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>

6 files changed, 36 insertions, 48 deletions

diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index abefcc351521..ba55b0623f7e 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -1,6 +1,6 @@
 extern spinlock_t pnp_lock;
 void *pnp_alloc(long size);
-int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
+struct pnp_id *pnp_add_id(struct pnp_dev *dev, char *id);
 int pnp_interface_attach_device(struct pnp_dev *dev);
 void pnp_fixup_device(struct pnp_dev *dev);
 void pnp_free_option(struct pnp_option *option);
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index e85cbf116db1..d3f869ee1d92 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -226,22 +226,36 @@ void pnp_unregister_driver(struct pnp_driver *drv)
 
 /**
  * pnp_add_id - adds an EISA id to the specified device
- * @id: pointer to a pnp_id structure
  * @dev: pointer to the desired device
+ * @id: pointer to an EISA id string
  */
-int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev)
+struct pnp_id *pnp_add_id(struct pnp_dev *dev, char *id)
 {
-        struct pnp_id *ptr;
+        struct pnp_id *dev_id, *ptr;
 
-        id->next = NULL;
+        dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
+        if (!dev_id)
+                return NULL;
+
+        dev_id->id[0] = id[0];
+        dev_id->id[1] = id[1];
+        dev_id->id[2] = id[2];
+        dev_id->id[3] = tolower(id[3]);
+        dev_id->id[4] = tolower(id[4]);
+        dev_id->id[5] = tolower(id[5]);
+        dev_id->id[6] = tolower(id[6]);
+        dev_id->id[7] = '\0';
+
+        dev_id->next = NULL;
         ptr = dev->id;
         while (ptr && ptr->next)
                 ptr = ptr->next;
         if (ptr)
-                ptr->next = id;
+                ptr->next = dev_id;
         else
-                dev->id = id;
-        return 0;
+                dev->id = dev_id;
+
+        return dev_id;
 }
 
 EXPORT_SYMBOL(pnp_register_driver);
diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c
index dd67752a5828..10cade831433 100644
--- a/drivers/pnp/isapnp/core.c
+++ b/drivers/pnp/isapnp/core.c
@@ -44,6 +44,8 @@
 #include <linux/mutex.h>
 #include <asm/io.h>
 
+#include "../base.h"
+
 #if 0
 #define ISAPNP_REGION_OK
 #endif
@@ -401,20 +403,16 @@ static void __init isapnp_skip_bytes(int count)
 static void isapnp_parse_id(struct pnp_dev *dev, unsigned short vendor,
                             unsigned short device)
 {
-        struct pnp_id *id;
+        char id[8];
 
-        if (!dev)
-                return;
-        id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
-        if (!id)
-                return;
-        sprintf(id->id, "%c%c%c%x%x%x%x",
+        sprintf(id, "%c%c%c%x%x%x%x",
                 'A' + ((vendor >> 2) & 0x3f) - 1,
                 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
                 'A' + ((vendor >> 8) & 0x1f) - 1,
                 (device >> 4) & 0x0f,
                 device & 0x0f, (device >> 12) & 0x0f, (device >> 8) & 0x0f);
-        pnp_add_id(id, dev);
+
+        pnp_add_id(dev, id);
 }
 
 /*
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 4807d76f8a04..86aea1ebfee7 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -73,18 +73,6 @@ static int __init ispnpidacpi(char *id)
         return 1;
 }
 
-static void __init pnpidacpi_to_pnpid(char *id, char *str)
-{
-        str[0] = id[0];
-        str[1] = id[1];
-        str[2] = id[2];
-        str[3] = tolower(id[3]);
-        str[4] = tolower(id[4]);
-        str[5] = tolower(id[5]);
-        str[6] = tolower(id[6]);
-        str[7] = '\0';
-}
-
 static int pnpacpi_get_resources(struct pnp_dev *dev,
                                  struct pnp_resource_table *res)
 {
@@ -201,12 +189,9 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
 
         dev->number = num;
 
-        /* set the initial values for the PnP device */
-        dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
+        dev_id = pnp_add_id(dev, acpi_device_hid(device));
         if (!dev_id)
                 goto err;
-        pnpidacpi_to_pnpid(acpi_device_hid(device), dev_id->id);
-        pnp_add_id(dev_id, dev);
 
         if (dev->active) {
                 /* parse allocated resource */
@@ -227,7 +212,6 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
                 }
         }
 
-        /* parse compatible ids */
         if (device->flags.compatible_ids) {
                 struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
                 int i;
@@ -235,12 +219,7 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
                 for (i = 0; i < cid_list->count; i++) {
                         if (!ispnpidacpi(cid_list->id[i].value))
                                 continue;
-                        dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
-                        if (!dev_id)
-                                continue;
-
-                        pnpidacpi_to_pnpid(cid_list->id[i].value, dev_id->id);
-                        pnp_add_id(dev_id, dev);
+                        pnp_add_id(dev, cid_list->id[i].value);
                 }
         }
 
diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index 2a5353bceb24..2d592aea0aa7 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -332,16 +332,14 @@ static int __init insert_device(struct pnp_bios_node *node)
         if (!dev)
                 return -1;
 
-        dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
+        pnpid32_to_pnpid(node->eisa_id, id);
+        dev_id = pnp_add_id(dev, id);
         if (!dev_id) {
                 kfree(dev);
                 return -1;
         }
 
         dev->number = node->handle;
-        pnpid32_to_pnpid(node->eisa_id, id);
-        memcpy(dev_id->id, id, 7);
-        pnp_add_id(dev_id, dev);
         pnpbios_parse_data_stream(dev, node);
         dev->active = pnp_is_active(dev);
         dev->flags = node->flags;
diff --git a/drivers/pnp/pnpbios/rsparser.c b/drivers/pnp/pnpbios/rsparser.c
index caade3531416..dbc88412c12e 100644
--- a/drivers/pnp/pnpbios/rsparser.c
+++ b/drivers/pnp/pnpbios/rsparser.c
@@ -16,6 +16,7 @@ inline void pcibios_penalize_isa_irq(int irq, int active)
 }
 #endif                          /* CONFIG_PCI */
 
+#include "../base.h"
 #include "pnpbios.h"
 
 /* standard resource tags */
@@ -548,13 +549,11 @@ static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p,
                 case SMALL_TAG_COMPATDEVID:     /* compatible ID */
                         if (len != 4)
                                 goto len_err;
-                        dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
-                        if (!dev_id)
-                                return NULL;
                         pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] <<
                                          24, id);
-                        memcpy(&dev_id->id, id, 7);
-                        pnp_add_id(dev_id, dev);
+                        dev_id = pnp_add_id(dev, id);
+                        if (!dev_id)
+                                return NULL;
                         break;
 
                 case SMALL_TAG_END: