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Date: Thu, 31 Jan 2013 11:13:56 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Ming Lei <ming.lei@...onical.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] 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@...onical.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
drivers/base/firmware_class.c | 313 ++++++++++++++++++++----------------------
1 file changed, 151 insertions(+), 162 deletions(-)
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 84b1c8d..51e62ca 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -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;
}
-#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)
+/* load a firmware via user helper */
+static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
+ long timeout)
{
- fw->priv = buf;
-#ifdef CONFIG_FW_LOADER_USER_HELPER
- fw->pages = buf->pages;
-#endif
- fw->size = buf->size;
- fw->data = buf->data;
+ int retval = 0;
+ struct device *f_dev = &fw_priv->dev;
+ struct firmware_buf *buf = fw_priv->buf;
- pr_debug("%s: fw-%s buf=%p data=%p size=%u\n",
- __func__, buf->fw_id, buf, buf->data,
- (unsigned int)buf->size);
-}
+ /* fall back on userspace loading */
+ buf->is_paged_buf = true;
-#ifdef CONFIG_PM_SLEEP
-static void fw_name_devm_release(struct device *dev, void *res)
-{
- struct fw_name_devm *fwn = res;
+ dev_set_uevent_suppress(f_dev, true);
- if (fwn->magic == (unsigned long)&fw_cache)
- pr_debug("%s: fw_name-%s devm-%p released\n",
- __func__, fwn->name, res);
-}
+ /* Need to pin this module until class device is destroyed */
+ __module_get(THIS_MODULE);
-static int fw_devm_match(struct device *dev, void *res,
- void *match_data)
-{
- struct fw_name_devm *fwn = res;
+ retval = device_add(f_dev);
+ if (retval) {
+ dev_err(f_dev, "%s: device_register failed\n", __func__);
+ goto err_put_dev;
+ }
- return (fwn->magic == (unsigned long)&fw_cache) &&
- !strcmp(fwn->name, match_data);
-}
+ 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;
+ }
-static struct fw_name_devm *fw_find_devm_name(struct device *dev,
- const char *name)
-{
- struct fw_name_devm *fwn;
+ 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;
+ }
- fwn = devres_find(dev, fw_name_devm_release,
- fw_devm_match, (void *)name);
- return fwn;
-}
+ 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);
-/* add firmware name into devres list */
-static int fw_add_devm_name(struct device *dev, const char *name)
-{
- struct fw_name_devm *fwn;
+ kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
+ }
- fwn = fw_find_devm_name(dev, name);
- if (fwn)
- return 1;
+ wait_for_completion(&buf->completion);
- fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm) +
- strlen(name) + 1, GFP_KERNEL);
- if (!fwn)
- return -ENOMEM;
+ cancel_delayed_work_sync(&fw_priv->timeout_work);
- fwn->magic = (unsigned long)&fw_cache;
- strcpy(fwn->name, name);
- devres_add(dev, fwn);
+ fw_priv->buf = NULL;
- return 0;
+ 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;
}
-#else
-static int fw_add_devm_name(struct device *dev, const char *name)
+
+static int fw_load_from_user_helper(struct firmware *firmware,
+ const char *name, struct device *device,
+ bool uevent, bool nowait, long timeout)
{
- return 0;
+ 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);
}
-#endif
+#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 */
+
/* 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,
--
1.8.1.1
--
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