Hi Michal,
On Wed, Feb 12, 2014 at 02:41:21PM +0100, Michal Simek wrote:
> Use of_property_read_u32 functions to clean probe function.
>
> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
> Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
>
> Changes in v3:
> - Remove one if checking and use variable directly
>
Looks good.
Another comment/remark.
>
> - pfreq = (u32 *)of_get_property(pdev->dev.of_node,
> - "clock-frequency", NULL);
> -
> - if (pfreq == NULL) {
> + rc = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &pfreq);
> + if (rc) {
> dev_warn(&pdev->dev,
> "The watchdog clock frequency cannot be obtained\n");
> no_timeout = true;
> }
>
> - tmptr = (u32 *)of_get_property(pdev->dev.of_node,
> - "xlnx,wdt-interval", NULL);
> - if (tmptr == NULL) {
> + rc = of_property_read_u32(pdev->dev.of_node, "xlnx,wdt-interval",
> + &xdev->wdt_interval);
> + if (rc) {
> dev_warn(&pdev->dev,
> "Parameter \"xlnx,wdt-interval\" not found\n");
> no_timeout = true;
> - } else {
> - xdev->wdt_interval = *tmptr;
> }
>
> - tmptr = (u32 *)of_get_property(pdev->dev.of_node,
> - "xlnx,wdt-enable-once", NULL);
> - if (tmptr == NULL) {
> + rc = of_property_read_u32(pdev->dev.of_node, "xlnx,wdt-enable-once",
> + &enable_once);
> + if (rc)
> dev_warn(&pdev->dev,
> "Parameter \"xlnx,wdt-enable-once\" not found\n");
> - watchdog_set_nowayout(xilinx_wdt_wdd, true);
> - }
All the above properties are optional. Is a warning really
warranted in this case ? I usually associate a warning with
something that is wrong, which is not the case here.
I would encourage you to drop those warnings, but that should be
a separate patch.
Thanks,
Guenter
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