Reseending the patch for firmware_class.c submitted earlier ,the patch
upgrades the request_firmware_nowait function to not start the hotplug
action on a firmware update.
This patch is tested along with dell_rbu driver on i386 and x86-64 systems.
Andrew, could you please add this patch to the -mm tree.
Signed-off-by: Abhay Salunke <[EMAIL PROTECTED]>
Thanks
Abhay
diff -uprN linux-2.6.11.11.orig/drivers/base/firmware_class.c
linux-2.6.11.11.new/drivers/base/firmware_class.c
--- linux-2.6.11.11.orig/drivers/base/firmware_class.c 2005-06-17
22:02:47.000000000 -0500
+++ linux-2.6.11.11.new/drivers/base/firmware_class.c 2005-07-12
15:40:52.000000000 -0500
@@ -28,6 +28,7 @@ enum {
FW_STATUS_DONE,
FW_STATUS_ABORT,
FW_STATUS_READY,
+ FW_STATUS_READY_NOHOTPLUG,
};
static int loading_timeout = 10; /* In seconds */
@@ -334,7 +335,7 @@ error_kfree:
static int
fw_setup_class_device(struct firmware *fw, struct class_device **class_dev_p,
- const char *fw_name, struct device *device)
+ const char *fw_name, struct device *device, int hotplug)
{
struct class_device *class_dev;
struct firmware_priv *fw_priv;
@@ -365,8 +366,11 @@ fw_setup_class_device(struct firmware *f
__FUNCTION__);
goto error_unreg;
}
-
- set_bit(FW_STATUS_READY, &fw_priv->status);
+
+ if (hotplug)
+ set_bit(FW_STATUS_READY, &fw_priv->status);
+ else
+ set_bit(FW_STATUS_READY_NOHOTPLUG, &fw_priv->status);
*class_dev_p = class_dev;
goto out;
@@ -376,21 +380,9 @@ out:
return retval;
}
-/**
- * request_firmware: - request firmware to hotplug and wait for it
- * Description:
- * @firmware will be used to return a firmware image by the name
- * of @name for device @device.
- *
- * Should be called from user context where sleeping is allowed.
- *
- * @name will be use as $FIRMWARE in the hotplug environment and
- * should be distinctive enough not to be confused with any other
- * firmware image for this or any other device.
- **/
-int
-request_firmware(const struct firmware **firmware_p, const char *name,
- struct device *device)
+static int
+_request_firmware(const struct firmware **firmware_p, const char *name,
+ struct device *device, int hotplug)
{
struct class_device *class_dev;
struct firmware_priv *fw_priv;
@@ -409,22 +401,25 @@ request_firmware(const struct firmware *
}
memset(firmware, 0, sizeof (*firmware));
- retval = fw_setup_class_device(firmware, &class_dev, name, device);
+ retval = fw_setup_class_device(firmware, &class_dev, name, device,
+ hotplug);
if (retval)
goto error_kfree_fw;
fw_priv = class_get_devdata(class_dev);
+
+ if (hotplug) {
+ if (loading_timeout) {
+ fw_priv->timeout.expires = jiffies + loading_timeout *
HZ;
+ add_timer(&fw_priv->timeout);
+ }
- if (loading_timeout) {
- fw_priv->timeout.expires = jiffies + loading_timeout * HZ;
- add_timer(&fw_priv->timeout);
- }
-
- kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
- wait_for_completion(&fw_priv->completion);
- set_bit(FW_STATUS_DONE, &fw_priv->status);
-
- del_timer_sync(&fw_priv->timeout);
+ kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
+ wait_for_completion(&fw_priv->completion);
+ set_bit(FW_STATUS_DONE, &fw_priv->status);
+ del_timer_sync(&fw_priv->timeout);
+ } else
+ wait_for_completion(&fw_priv->completion);
down(&fw_lock);
if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status)) {
@@ -445,6 +440,26 @@ out:
}
/**
+ * request_firmware: - request firmware to hotplug and wait for it
+ * Description:
+ * @firmware will be used to return a firmware image by the name
+ * of @name for device @device.
+ *
+ * Should be called from user context where sleeping is allowed.
+ *
+ * @name will be use as $FIRMWARE in the hotplug environment and
+ * should be distinctive enough not to be confused with any other
+ * firmware image for this or any other device.
+ **/
+int
+request_firmware(const struct firmware **firmware_p, const char *name,
+ struct device *device)
+{
+ int hotplug = 1;
+ return _request_firmware(firmware_p, name, device, hotplug);
+}
+
+/**
* release_firmware: - release the resource associated with a firmware image
**/
void
@@ -481,6 +496,7 @@ struct firmware_work {
struct device *device;
void *context;
void (*cont)(const struct firmware *fw, void *context);
+ int hotplug;
};
static int
@@ -493,7 +509,8 @@ request_firmware_work_func(void *arg)
return 0;
}
daemonize("%s/%s", "firmware", fw_work->name);
- request_firmware(&fw, fw_work->name, fw_work->device);
+ _request_firmware(&fw, fw_work->name, fw_work->device,
+ fw_work->hotplug);
fw_work->cont(fw, fw_work->context);
release_firmware(fw);
module_put(fw_work->module);
@@ -501,23 +518,27 @@ request_firmware_work_func(void *arg)
return 0;
}
+
/**
* request_firmware_nowait:
*
* Description:
- * Asynchronous variant of request_firmware() for contexts where
- * it is not possible to sleep.
+ * Asynchronous variant of request_firmware() for contexts where
+ * it is not possible to sleep.
+ *
+ * @hotplug invokes hotplug event to copy the firmware image if this flag
+ * is non-zero else the firmware copy must be done manually.
*
- * @cont will be called asynchronously when the firmware request is over.
+ * @cont will be called asynchronously when the firmware request is over.
*
- * @context will be passed over to @cont.
+ * @context will be passed over to @cont.
*
- * @fw may be %NULL if firmware request fails.
+ * @fw may be %NULL if firmware request fails.
*
**/
int
request_firmware_nowait(
- struct module *module,
+ struct module *module, int hotplug,
const char *name, struct device *device, void *context,
void (*cont)(const struct firmware *fw, void *context))
{
@@ -538,6 +559,7 @@ request_firmware_nowait(
.device = device,
.context = context,
.cont = cont,
+ .hotplug = hotplug,
};
ret = kernel_thread(request_firmware_work_func, fw_work,
diff -uprN linux-2.6.11.11.orig/include/linux/firmware.h
linux-2.6.11.11.new/include/linux/firmware.h
--- linux-2.6.11.11.orig/include/linux/firmware.h 2005-06-14
20:53:13.000000000 -0500
+++ linux-2.6.11.11.new/include/linux/firmware.h 2005-07-12
15:51:05.000000000 -0500
@@ -3,6 +3,9 @@
#include <linux/module.h>
#include <linux/types.h>
#define FIRMWARE_NAME_MAX 30
+#define FW_ACTION_NOHOTPLUG 0
+#define FW_ACTION_HOTPLUG 1
+
struct firmware {
size_t size;
u8 *data;
@@ -11,10 +14,9 @@ struct device;
int request_firmware(const struct firmware **fw, const char *name,
struct device *device);
int request_firmware_nowait(
- struct module *module,
+ struct module *module, int hotplug,
const char *name, struct device *device, void *context,
void (*cont)(const struct firmware *fw, void *context));
-
void release_firmware(const struct firmware *fw);
void register_firmware(const char *name, const u8 *data, size_t size);
#endif
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
