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OpenCloudOS-Kernel
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wl18xx: fallback to default conf in case of invalid conf file 

If the wl18xx-conf.bin file is missing or invalid (e.g. due
to recent driver change), fallback to default configuration
instead of failing driver load.

Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Eliad Peller 2015-05-06 11:29:54 +03:00 committed by Kalle Valo
parent 4aff53ef18
commit 6f157edb4d
1 changed files with 27 additions and 22 deletions
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49
drivers/net/wireless/ti/wl18xx/main.c
View File

@ -1375,9 +1375,10 @@ out:
}
#define WL18XX_CONF_FILE_NAME "ti-connectivity/wl18xx-conf.bin"
static int wl18xx_conf_init(struct wl1271 *wl, struct device *dev)
static int wl18xx_load_conf_file(struct device *dev, struct wlcore_conf *conf,
struct wl18xx_priv_conf *priv_conf)
{
struct wl18xx_priv *priv = wl->priv;
struct wlcore_conf_file *conf_file;
const struct firmware *fw;
int ret;
@ -1386,14 +1387,14 @@ static int wl18xx_conf_init(struct wl1271 *wl, struct device *dev)
if (ret < 0) {
wl1271_error("could not get configuration binary %s: %d",
WL18XX_CONF_FILE_NAME, ret);
goto out_fallback;
return ret;
}
if (fw->size != WL18XX_CONF_SIZE) {
wl1271_error("configuration binary file size is wrong, expected %zu got %zu",
WL18XX_CONF_SIZE, fw->size);
ret = -EINVAL;
goto out;
goto out_release;
}
conf_file = (struct wlcore_conf_file *) fw->data;
@ -1403,7 +1404,7 @@ static int wl18xx_conf_init(struct wl1271 *wl, struct device *dev)
"expected 0x%0x got 0x%0x", WL18XX_CONF_MAGIC,
conf_file->header.magic);
ret = -EINVAL;
goto out;
goto out_release;
}
if (conf_file->header.version != cpu_to_le32(WL18XX_CONF_VERSION)) {
@ -1411,30 +1412,34 @@ static int wl18xx_conf_init(struct wl1271 *wl, struct device *dev)
"expected 0x%08x got 0x%08x",
WL18XX_CONF_VERSION, conf_file->header.version);
ret = -EINVAL;
goto out;
goto out_release;
}
memcpy(&wl->conf, &conf_file->core, sizeof(wl18xx_conf));
memcpy(&priv->conf, &conf_file->priv, sizeof(priv->conf));
memcpy(conf, &conf_file->core, sizeof(*conf));
memcpy(priv_conf, &conf_file->priv, sizeof(*priv_conf));
goto out;
out_fallback:
wl1271_warning("falling back to default config");
/* apply driver default configuration */
memcpy(&wl->conf, &wl18xx_conf, sizeof(wl18xx_conf));
/* apply default private configuration */
memcpy(&priv->conf, &wl18xx_default_priv_conf, sizeof(priv->conf));
/* For now we just fallback */
return 0;
out:
out_release:
release_firmware(fw);
return ret;
}
static int wl18xx_conf_init(struct wl1271 *wl, struct device *dev)
{
struct wl18xx_priv *priv = wl->priv;
if (wl18xx_load_conf_file(dev, &wl->conf, &priv->conf) < 0) {
wl1271_warning("falling back to default config");
/* apply driver default configuration */
memcpy(&wl->conf, &wl18xx_conf, sizeof(wl->conf));
/* apply default private configuration */
memcpy(&priv->conf, &wl18xx_default_priv_conf,
sizeof(priv->conf));
}
return 0;
}
static int wl18xx_plt_init(struct wl1271 *wl)
{
int ret;