On Fri, 3 Aug 2007, Inaky Perez-Gonzalez wrote:
> +static
> +void usb_dev_reset_delayed_task(struct work_struct *ws)
> +{
> + struct usb_dev_reset_ctx *reset_ctx =
> + container_of(ws, struct usb_dev_reset_ctx, ws);
> + struct usb_device *usb_dev = reset_ctx->usb_dev;
> + struct device *dev = &usb_dev->dev;
> + int had_to_lock;
> + int result = 0;
> +
> + if (usb_dev == NULL) {
> + WARN_ON(1);
> + goto release;
> + }
This can never happen; there's no reason to test for it.
> +void usb_dev_reset_delayed(struct usb_device *usb_dev)
> +{
> + struct usb_dev_reset_ctx *reset_ctx;
> + struct device *dev = &usb_dev->dev;
> + reset_ctx = kmalloc(sizeof(*reset_ctx), GFP_ATOMIC);
> + if (reset_ctx == NULL) {
> + if (printk_ratelimit())
> + dev_err(dev, "USB: cannot allocate memory for "
> + "delayed device reset\n");
> + return;
> + }
> + if (try_module_get(THIS_MODULE) == 0)
> + goto error_module_get;
> + usb_get_dev(usb_dev);
> + if (usb_dev->delayed_reset)
> + goto error_pending;
> + usb_dev->delayed_reset = 1;
> + reset_ctx->usb_dev = usb_dev;
> + INIT_WORK(&reset_ctx->ws, usb_dev_reset_delayed_task);
> + schedule_work(&reset_ctx->ws);
> + return;
> +
> +error_pending:
> + usb_put_dev(usb_dev);
You forgot to call module_put().
> +error_module_get:
> + kfree(reset_ctx);
> + return;
> +}
> +EXPORT_SYMBOL_GPL(usb_dev_reset_delayed);
Alan Stern
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