forked from luck/tmp_suning_uos_patched
firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
By shuffling the code, reduce a few ifdefs in firmware_class.c. Also, firmware_buf fmt field is changed to is_pages_buf boolean for simplification. Acked-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai
Greg Kroah-Hartman
parent
7b1269f778
commit
cd7239fab7
@ -88,13 +88,6 @@ enum {
|
||||
FW_STATUS_ABORT,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
enum fw_buf_fmt {
|
||||
VMALLOC_BUF, /* used in direct loading */
|
||||
PAGE_BUF, /* used in loading via userspace */
|
||||
};
|
||||
#endif /* CONFIG_FW_LOADER_USER_HELPER */
|
||||
|
||||
static int loading_timeout = 60; /* In seconds */
|
||||
|
||||
static inline long firmware_loading_timeout(void)
|
||||
@ -133,7 +126,7 @@ struct firmware_buf {
|
||||
void *data;
|
||||
size_t size;
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
enum fw_buf_fmt fmt;
|
||||
bool is_paged_buf;
|
||||
struct page **pages;
|
||||
int nr_pages;
|
||||
int page_array_size;
|
||||
@ -146,16 +139,6 @@ struct fw_cache_entry {
|
||||
char name[];
|
||||
};
|
||||
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
struct firmware_priv {
|
||||
struct delayed_work timeout_work;
|
||||
bool nowait;
|
||||
struct device dev;
|
||||
struct firmware_buf *buf;
|
||||
struct firmware *fw;
|
||||
};
|
||||
#endif
|
||||
|
||||
struct fw_name_devm {
|
||||
unsigned long magic;
|
||||
char name[];
|
||||
@ -188,9 +171,6 @@ static struct firmware_buf *__allocate_fw_buf(const char *fw_name,
|
||||
strcpy(buf->fw_id, fw_name);
|
||||
buf->fwc = fwc;
|
||||
init_completion(&buf->completion);
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
buf->fmt = VMALLOC_BUF;
|
||||
#endif
|
||||
|
||||
pr_debug("%s: fw-%s buf=%p\n", __func__, fw_name, buf);
|
||||
|
||||
@ -256,9 +236,8 @@ static void __fw_free_buf(struct kref *ref)
|
||||
list_del(&buf->list);
|
||||
spin_unlock(&fwc->lock);
|
||||
|
||||
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
if (buf->fmt == PAGE_BUF) {
|
||||
if (buf->is_paged_buf) {
|
||||
int i;
|
||||
vunmap(buf->data);
|
||||
for (i = 0; i < buf->nr_pages; i++)
|
||||
@ -378,7 +357,89 @@ static void firmware_free_data(const struct firmware *fw)
|
||||
fw_free_buf(fw->priv);
|
||||
}
|
||||
|
||||
/* store the pages buffer info firmware from buf */
|
||||
static void fw_set_page_data(struct firmware_buf *buf, struct firmware *fw)
|
||||
{
|
||||
fw->priv = buf;
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
fw->pages = buf->pages;
|
||||
#endif
|
||||
fw->size = buf->size;
|
||||
fw->data = buf->data;
|
||||
|
||||
pr_debug("%s: fw-%s buf=%p data=%p size=%u\n",
|
||||
__func__, buf->fw_id, buf, buf->data,
|
||||
(unsigned int)buf->size);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static void fw_name_devm_release(struct device *dev, void *res)
|
||||
{
|
||||
struct fw_name_devm *fwn = res;
|
||||
|
||||
if (fwn->magic == (unsigned long)&fw_cache)
|
||||
pr_debug("%s: fw_name-%s devm-%p released\n",
|
||||
__func__, fwn->name, res);
|
||||
}
|
||||
|
||||
static int fw_devm_match(struct device *dev, void *res,
|
||||
void *match_data)
|
||||
{
|
||||
struct fw_name_devm *fwn = res;
|
||||
|
||||
return (fwn->magic == (unsigned long)&fw_cache) &&
|
||||
!strcmp(fwn->name, match_data);
|
||||
}
|
||||
|
||||
static struct fw_name_devm *fw_find_devm_name(struct device *dev,
|
||||
const char *name)
|
||||
{
|
||||
struct fw_name_devm *fwn;
|
||||
|
||||
fwn = devres_find(dev, fw_name_devm_release,
|
||||
fw_devm_match, (void *)name);
|
||||
return fwn;
|
||||
}
|
||||
|
||||
/* add firmware name into devres list */
|
||||
static int fw_add_devm_name(struct device *dev, const char *name)
|
||||
{
|
||||
struct fw_name_devm *fwn;
|
||||
|
||||
fwn = fw_find_devm_name(dev, name);
|
||||
if (fwn)
|
||||
return 1;
|
||||
|
||||
fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm) +
|
||||
strlen(name) + 1, GFP_KERNEL);
|
||||
if (!fwn)
|
||||
return -ENOMEM;
|
||||
|
||||
fwn->magic = (unsigned long)&fw_cache;
|
||||
strcpy(fwn->name, name);
|
||||
devres_add(dev, fwn);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
static int fw_add_devm_name(struct device *dev, const char *name)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* user-mode helper code
|
||||
*/
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
struct firmware_priv {
|
||||
struct delayed_work timeout_work;
|
||||
bool nowait;
|
||||
struct device dev;
|
||||
struct firmware_buf *buf;
|
||||
struct firmware *fw;
|
||||
};
|
||||
|
||||
static struct firmware_priv *to_firmware_priv(struct device *dev)
|
||||
{
|
||||
@ -477,7 +538,7 @@ static ssize_t firmware_loading_show(struct device *dev,
|
||||
/* one pages buffer should be mapped/unmapped only once */
|
||||
static int fw_map_pages_buf(struct firmware_buf *buf)
|
||||
{
|
||||
if (buf->fmt != PAGE_BUF)
|
||||
if (!buf->is_paged_buf)
|
||||
return 0;
|
||||
|
||||
if (buf->data)
|
||||
@ -749,78 +810,89 @@ fw_create_instance(struct firmware *firmware, const char *fw_name,
|
||||
exit:
|
||||
return fw_priv;
|
||||
}
|
||||
|
||||
/* load a firmware via user helper */
|
||||
static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
|
||||
long timeout)
|
||||
{
|
||||
int retval = 0;
|
||||
struct device *f_dev = &fw_priv->dev;
|
||||
struct firmware_buf *buf = fw_priv->buf;
|
||||
|
||||
/* fall back on userspace loading */
|
||||
buf->is_paged_buf = true;
|
||||
|
||||
dev_set_uevent_suppress(f_dev, true);
|
||||
|
||||
/* Need to pin this module until class device is destroyed */
|
||||
__module_get(THIS_MODULE);
|
||||
|
||||
retval = device_add(f_dev);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: device_register failed\n", __func__);
|
||||
goto err_put_dev;
|
||||
}
|
||||
|
||||
retval = device_create_bin_file(f_dev, &firmware_attr_data);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: sysfs_create_bin_file failed\n", __func__);
|
||||
goto err_del_dev;
|
||||
}
|
||||
|
||||
retval = device_create_file(f_dev, &dev_attr_loading);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: device_create_file failed\n", __func__);
|
||||
goto err_del_bin_attr;
|
||||
}
|
||||
|
||||
if (uevent) {
|
||||
dev_set_uevent_suppress(f_dev, false);
|
||||
dev_dbg(f_dev, "firmware: requesting %s\n", buf->fw_id);
|
||||
if (timeout != MAX_SCHEDULE_TIMEOUT)
|
||||
schedule_delayed_work(&fw_priv->timeout_work, timeout);
|
||||
|
||||
kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
|
||||
}
|
||||
|
||||
wait_for_completion(&buf->completion);
|
||||
|
||||
cancel_delayed_work_sync(&fw_priv->timeout_work);
|
||||
|
||||
fw_priv->buf = NULL;
|
||||
|
||||
device_remove_file(f_dev, &dev_attr_loading);
|
||||
err_del_bin_attr:
|
||||
device_remove_bin_file(f_dev, &firmware_attr_data);
|
||||
err_del_dev:
|
||||
device_del(f_dev);
|
||||
err_put_dev:
|
||||
put_device(f_dev);
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int fw_load_from_user_helper(struct firmware *firmware,
|
||||
const char *name, struct device *device,
|
||||
bool uevent, bool nowait, long timeout)
|
||||
{
|
||||
struct firmware_priv *fw_priv;
|
||||
|
||||
fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
|
||||
if (IS_ERR(fw_priv))
|
||||
return PTR_ERR(fw_priv);
|
||||
|
||||
fw_priv->buf = firmware->priv;
|
||||
return _request_firmware_load(fw_priv, uevent, timeout);
|
||||
}
|
||||
#else /* CONFIG_FW_LOADER_USER_HELPER */
|
||||
static inline int
|
||||
fw_load_from_user_helper(struct firmware *firmware, const char *name,
|
||||
struct device *device, bool uevent, bool nowait,
|
||||
long timeout)
|
||||
{
|
||||
return -ENOENT;
|
||||
}
|
||||
#endif /* CONFIG_FW_LOADER_USER_HELPER */
|
||||
|
||||
/* store the pages buffer info firmware from buf */
|
||||
static void fw_set_page_data(struct firmware_buf *buf, struct firmware *fw)
|
||||
{
|
||||
fw->priv = buf;
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
fw->pages = buf->pages;
|
||||
#endif
|
||||
fw->size = buf->size;
|
||||
fw->data = buf->data;
|
||||
|
||||
pr_debug("%s: fw-%s buf=%p data=%p size=%u\n",
|
||||
__func__, buf->fw_id, buf, buf->data,
|
||||
(unsigned int)buf->size);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static void fw_name_devm_release(struct device *dev, void *res)
|
||||
{
|
||||
struct fw_name_devm *fwn = res;
|
||||
|
||||
if (fwn->magic == (unsigned long)&fw_cache)
|
||||
pr_debug("%s: fw_name-%s devm-%p released\n",
|
||||
__func__, fwn->name, res);
|
||||
}
|
||||
|
||||
static int fw_devm_match(struct device *dev, void *res,
|
||||
void *match_data)
|
||||
{
|
||||
struct fw_name_devm *fwn = res;
|
||||
|
||||
return (fwn->magic == (unsigned long)&fw_cache) &&
|
||||
!strcmp(fwn->name, match_data);
|
||||
}
|
||||
|
||||
static struct fw_name_devm *fw_find_devm_name(struct device *dev,
|
||||
const char *name)
|
||||
{
|
||||
struct fw_name_devm *fwn;
|
||||
|
||||
fwn = devres_find(dev, fw_name_devm_release,
|
||||
fw_devm_match, (void *)name);
|
||||
return fwn;
|
||||
}
|
||||
|
||||
/* add firmware name into devres list */
|
||||
static int fw_add_devm_name(struct device *dev, const char *name)
|
||||
{
|
||||
struct fw_name_devm *fwn;
|
||||
|
||||
fwn = fw_find_devm_name(dev, name);
|
||||
if (fwn)
|
||||
return 1;
|
||||
|
||||
fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm) +
|
||||
strlen(name) + 1, GFP_KERNEL);
|
||||
if (!fwn)
|
||||
return -ENOMEM;
|
||||
|
||||
fwn->magic = (unsigned long)&fw_cache;
|
||||
strcpy(fwn->name, name);
|
||||
devres_add(dev, fwn);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
static int fw_add_devm_name(struct device *dev, const char *name)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* wait until the shared firmware_buf becomes ready (or error) */
|
||||
static int sync_cached_firmware_buf(struct firmware_buf *buf)
|
||||
@ -921,89 +993,6 @@ static int assign_firmware_buf(struct firmware *fw, struct device *device)
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
||||
/* load a firmware via user helper */
|
||||
static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
|
||||
long timeout)
|
||||
{
|
||||
int retval = 0;
|
||||
struct device *f_dev = &fw_priv->dev;
|
||||
struct firmware_buf *buf = fw_priv->buf;
|
||||
|
||||
/* fall back on userspace loading */
|
||||
buf->fmt = PAGE_BUF;
|
||||
|
||||
dev_set_uevent_suppress(f_dev, true);
|
||||
|
||||
/* Need to pin this module until class device is destroyed */
|
||||
__module_get(THIS_MODULE);
|
||||
|
||||
retval = device_add(f_dev);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: device_register failed\n", __func__);
|
||||
goto err_put_dev;
|
||||
}
|
||||
|
||||
retval = device_create_bin_file(f_dev, &firmware_attr_data);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: sysfs_create_bin_file failed\n", __func__);
|
||||
goto err_del_dev;
|
||||
}
|
||||
|
||||
retval = device_create_file(f_dev, &dev_attr_loading);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: device_create_file failed\n", __func__);
|
||||
goto err_del_bin_attr;
|
||||
}
|
||||
|
||||
if (uevent) {
|
||||
dev_set_uevent_suppress(f_dev, false);
|
||||
dev_dbg(f_dev, "firmware: requesting %s\n", buf->fw_id);
|
||||
if (timeout != MAX_SCHEDULE_TIMEOUT)
|
||||
schedule_delayed_work(&fw_priv->timeout_work, timeout);
|
||||
|
||||
kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
|
||||
}
|
||||
|
||||
wait_for_completion(&buf->completion);
|
||||
|
||||
cancel_delayed_work_sync(&fw_priv->timeout_work);
|
||||
|
||||
fw_priv->buf = NULL;
|
||||
|
||||
device_remove_file(f_dev, &dev_attr_loading);
|
||||
err_del_bin_attr:
|
||||
device_remove_bin_file(f_dev, &firmware_attr_data);
|
||||
err_del_dev:
|
||||
device_del(f_dev);
|
||||
err_put_dev:
|
||||
put_device(f_dev);
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int fw_load_from_user_helper(struct firmware *firmware,
|
||||
const char *name, struct device *device,
|
||||
bool uevent, bool nowait, long timeout)
|
||||
{
|
||||
struct firmware_priv *fw_priv;
|
||||
|
||||
fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
|
||||
if (IS_ERR(fw_priv))
|
||||
return PTR_ERR(fw_priv);
|
||||
|
||||
fw_priv->buf = firmware->priv;
|
||||
return _request_firmware_load(fw_priv, uevent, timeout);
|
||||
}
|
||||
#else /* CONFIG_FW_LOADER_USER_HELPER */
|
||||
static inline int
|
||||
fw_load_from_user_helper(struct firmware *firmware, const char *name,
|
||||
struct device *device, bool uevent, bool nowait,
|
||||
long timeout)
|
||||
{
|
||||
return -ENOENT;
|
||||
}
|
||||
#endif /* CONFIG_FW_LOADER_USER_HELPER */
|
||||
|
||||
/* called from request_firmware() and request_firmware_work_func() */
|
||||
static int
|
||||
_request_firmware(const struct firmware **firmware_p, const char *name,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user