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authorMike Frysinger <vapier@gentoo.org>2010-07-27 18:35:09 -0400
committerBen Warren <biggerbadderben@gmail.com>2010-08-09 11:52:29 -0700
commit0daac97801fa5989d3740487aa824fbab9ff0503 (patch)
treeef68e719ce34fb5064352ba0737b3ec6b63337e6 /common
parent5700bb63522c2af9276f25a15448b61f19d72841 (diff)
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miiphy: unify device list lookup
Rather than have every func re-implement the list walking code, do it one local function. This shrinks the resulting object code a little while making the source much more manageable. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'common')
-rw-r--r--common/miiphyutil.c100
1 files changed, 40 insertions, 60 deletions
diff --git a/common/miiphyutil.c b/common/miiphyutil.c
index a299b12..e055c08 100644
--- a/common/miiphyutil.c
+++ b/common/miiphyutil.c
@@ -56,6 +56,30 @@ struct mii_dev {
static struct list_head mii_devs;
static struct mii_dev *current_mii;
+/*
+ * Lookup the mii_dev struct by the registered device name.
+ */
+static struct mii_dev *miiphy_get_dev_by_name(const char *devname, int quiet)
+{
+ struct list_head *entry;
+ struct mii_dev *dev;
+
+ if (!devname) {
+ printf("NULL device name!\n");
+ return NULL;
+ }
+
+ list_for_each(entry, &mii_devs) {
+ dev = list_entry(entry, struct mii_dev, link);
+ if (strcmp(dev->name, devname) == 0)
+ return dev;
+ }
+
+ if (!quiet)
+ printf("No such device: %s\n", devname);
+ return NULL;
+}
+
/*****************************************************************************
*
* Initialize global data. Need to be called before any other miiphy routine.
@@ -76,20 +100,15 @@ void miiphy_register(const char *name,
int (*write) (const char *devname, unsigned char addr,
unsigned char reg, unsigned short value))
{
- struct list_head *entry;
struct mii_dev *new_dev;
- struct mii_dev *miidev;
unsigned int name_len;
char *new_name;
/* check if we have unique name */
- list_for_each (entry, &mii_devs) {
- miidev = list_entry (entry, struct mii_dev, link);
- if (strcmp (miidev->name, name) == 0) {
- printf ("miiphy_register: non unique device name "
- "'%s'\n", name);
- return;
- }
+ new_dev = miiphy_get_dev_by_name(name, 1);
+ if (new_dev) {
+ printf("miiphy_register: non unique device name '%s'\n", name);
+ return;
}
/* allocate memory */
@@ -124,19 +143,14 @@ void miiphy_register(const char *name,
int miiphy_set_current_dev(const char *devname)
{
- struct list_head *entry;
struct mii_dev *dev;
- list_for_each (entry, &mii_devs) {
- dev = list_entry (entry, struct mii_dev, link);
-
- if (strcmp (devname, dev->name) == 0) {
- current_mii = dev;
- return 0;
- }
+ dev = miiphy_get_dev_by_name(devname, 0);
+ if (dev) {
+ current_mii = dev;
+ return 0;
}
- printf ("No such device: %s\n", devname);
return 1;
}
@@ -159,30 +173,13 @@ const char *miiphy_get_current_dev(void)
int miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
unsigned short *value)
{
- struct list_head *entry;
struct mii_dev *dev;
- int found_dev = 0;
- int read_ret = 0;
-
- if (!devname) {
- printf ("NULL device name!\n");
- return 1;
- }
-
- list_for_each (entry, &mii_devs) {
- dev = list_entry (entry, struct mii_dev, link);
-
- if (strcmp (devname, dev->name) == 0) {
- found_dev = 1;
- read_ret = dev->read (devname, addr, reg, value);
- break;
- }
- }
- if (found_dev == 0)
- printf ("No such device: %s\n", devname);
+ dev = miiphy_get_dev_by_name(devname, 0);
+ if (dev)
+ return dev->read(devname, addr, reg, value);
- return ((found_dev) ? read_ret : 1);
+ return 1;
}
/*****************************************************************************
@@ -196,30 +193,13 @@ int miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
int miiphy_write(const char *devname, unsigned char addr, unsigned char reg,
unsigned short value)
{
- struct list_head *entry;
struct mii_dev *dev;
- int found_dev = 0;
- int write_ret = 0;
-
- if (!devname) {
- printf ("NULL device name!\n");
- return 1;
- }
- list_for_each (entry, &mii_devs) {
- dev = list_entry (entry, struct mii_dev, link);
+ dev = miiphy_get_dev_by_name(devname, 0);
+ if (dev)
+ return dev->write(devname, addr, reg, value);
- if (strcmp (devname, dev->name) == 0) {
- found_dev = 1;
- write_ret = dev->write (devname, addr, reg, value);
- break;
- }
- }
-
- if (found_dev == 0)
- printf ("No such device: %s\n", devname);
-
- return ((found_dev) ? write_ret : 1);
+ return 1;
}
/*****************************************************************************