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bcm53xx: sprom: simplify reading NVRAM after last backports 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45229
lede-17.01
Rafał Miłecki 2015-04-02 12:01:56 +00:00
parent bb0e931298
commit 91071e366c
1 changed files with 3 additions and 38 deletions
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41
target/linux/bcm53xx/files/drivers/misc/bcm47xx-sprom.c
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@ -32,9 +32,6 @@
struct bcm47xx_sprom_fill {
const char *prefix;
bool fallback;
int (*getenv)(const struct bcm47xx_sprom_fill *fill, const char *name,
char *val, size_t val_len);
const void *priv;
};
static void create_key(const char *prefix, const char *postfix,
@ -59,10 +56,10 @@ static int get_nvram_var(const struct bcm47xx_sprom_fill *fill,
create_key(fill->prefix, postfix, name, key, sizeof(key));
err = fill->getenv(fill, key, buf, len);
err = bcm47xx_nvram_getenv(key, buf, len);
if (fill->fallback && err == -ENOENT && fill->prefix) {
create_key(NULL, postfix, name, key, sizeof(key));
err = fill->getenv(fill, key, buf, len);
err = bcm47xx_nvram_getenv(key, buf, len);
}
return err;
}
@ -635,15 +632,6 @@ static void bcm47xx_sprom_fill(struct ssb_sprom *sprom,
}
}
static int bcm47xx_sprom_getenv(const struct bcm47xx_sprom_fill *fill,
const char *name, char *val, size_t val_len)
{
return bcm47xx_nvram_getenv(name, val, val_len);
};
/* FIXME: This should not be static, but some callback argument */
static struct platform_device *sprom_pdev = NULL;
static char prefix[20];
static void bcm47xx_sprom_apply_prefix_alias(char *prefix, size_t prefix_size)
@ -681,26 +669,8 @@ static void bcm47xx_sprom_apply_prefix_alias(char *prefix, size_t prefix_size)
*/
static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
{
struct platform_device *pdev = sprom_pdev;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
const __be32 *handle;
struct device_node *nvram_node;
struct platform_device *nvram_dev;
struct bcm47xx_sprom_fill fill;
handle = of_get_property(np, "nvram", NULL);
if (!handle)
return -ENOMEM;
nvram_node = of_find_node_by_phandle(be32_to_cpup(handle));
if (!nvram_node)
return -ENOMEM;
nvram_dev = of_find_device_by_node(nvram_node);
if (!nvram_dev)
return -ENOMEM;
switch (bus->hosttype) {
case BCMA_HOSTTYPE_PCI:
snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
@ -710,7 +680,7 @@ static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
fill.prefix = prefix;
break;
case BCMA_HOSTTYPE_SOC:
fill.prefix = of_get_property(np, "prefix", NULL);
fill.prefix = NULL;
break;
default:
pr_err("Unable to fill SPROM for given hosttype.\n");
@ -718,8 +688,6 @@ static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
}
fill.fallback = false;
fill.getenv = bcm47xx_sprom_getenv;
fill.priv = nvram_dev;
bcm47xx_sprom_fill(out, &fill);
@ -728,9 +696,6 @@ static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
static int bcm47xx_sprom_probe(struct platform_device *pdev)
{
/* This is the only way to make pdev accessible to the callback */
sprom_pdev = pdev;
return bcma_arch_register_fallback_sprom(&bcm47xx_sprom_init);
}