On Mon, Jul 11, 2011 at 04:59:12PM +0530, Tarun Kanti DebBarma wrote:
> Add dmtimer platform driver functions which include:
> (1) platform driver initialization
> (2) driver probe function
> (3) driver remove function
>
...
> + timer = kzalloc(sizeof(struct omap_dm_timer), GFP_KERNEL);
> + if (!timer) {
> + dev_err(&pdev->dev, "%s: no memory for omap_dm_timer.\n",
> + __func__);
> + ret = -ENOMEM;
> + goto err_release_ioregion;
> + }
> +
> + timer->io_base = ioremap(mem->start, resource_size(mem));
> + if (!timer->io_base) {
> + dev_err(&pdev->dev, "%s: ioremap failed.\n", __func__);
> + ret = -ENOMEM;
> + goto err_free_mem;
> + }
> +
> + if (pdata->timer_ip_type == OMAP_TIMER_IP_VERSION_2) {
> + timer->func_offset = VERSION2_TIMER_WAKEUP_EN_REG_OFFSET;
> + timer->intr_offset = VERSION2_TIMER_STAT_REG_OFFSET;
> + } else {
> + timer->func_offset = 0;
> + timer->intr_offset = 0;
Don't need to init kzalloc'ed fields to zero.
> + }
> +
> + timer->id = pdev->id;
> + timer->irq = irq->start;
> + timer->pdev = pdev;
> + timer->reserved = 0;
And here.
> +err_free_pdev:
> + kfree(pdata);
pdata wasn't allocated here, shouldn't be freed here.
> + platform_device_unregister(pdev);
The platform device wasn't registered here.
...
> +static int __devexit omap_dm_timer_remove(struct platform_device *pdev)
> +{
> + struct omap_dm_timer *timer, *tmp;
> + unsigned long flags;
> + int ret = -EINVAL;
> +
> + spin_lock_irqsave(&dm_timer_lock, flags);
> + list_for_each_entry_safe(timer, tmp, &omap_timer_list, node) {
Don't need list_for_each_entry_safe, you have the lock protecting list
modifications held and IRQs off.
> + if (timer->pdev->id == pdev->id) {
> + kfree(timer->pdev->dev.platform_data);
Not allocated by this driver.
> + platform_device_del(timer->pdev);
Not added by this driver.
> + list_del(&timer->node);
> + kfree(timer);
Todd
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