On Wed, Aug 03, 2016 at 04:27:41PM -0700, Adit Ranadive wrote:
+
> + /* Activate pvrdma device */
> + pvrdma_write_reg(dev, PVRDMA_REG_CTL, PVRDMA_DEVICE_CTL_ACTIVATE);
> +
> + /* Make sure the write is complete before reading status. */
> + mb();
> +
> + /* Check if device was successfully activated */
> + ret = pvrdma_read_reg(dev, PVRDMA_REG_ERR);
> + if (ret != 0) {
> + dev_err(&pdev->dev, "failed to activate device\n");
> + ret = -EINVAL;
> + goto err_disable_intr;
> + }
What if it will take the device to activate longer than the time between
write to PVRDMA_DEVICE_CTL_ACTIVATE and read from PVRDMA_REG_ERR?
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