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SubjectRe: Fwd: [PATCH 2/8] watchdog: davinci: use davinci_wdt_device structure to hold device data
On Tue, Nov 12, 2013 at 10:37:04AM -0500, Santosh Shilimkar wrote:
> On Wednesday 06 November 2013 06:31 AM, ivan.khoronzhuk wrote:
> > Some SoCs, like Keystone 2, can support more than one WDT and each
> > watchdog device has to use it's own base address, clock source,
> > wdd device, so add new davinci_wdt_device structure to hold device
> In commit avoid struct names ;)
> s/wdd/watchdog device
> > data.
> >
> > Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
> > ---
> > drivers/watchdog/davinci_wdt.c | 74 ++++++++++++++++++++++++++--------------
> > 1 file changed, 48 insertions(+), 26 deletions(-)
> >
> > diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
> > index a6eef71..1fc2093 100644
> > --- a/drivers/watchdog/davinci_wdt.c
> > +++ b/drivers/watchdog/davinci_wdt.c
>
> [...]
>
> > @@ -123,14 +135,21 @@ static int davinci_wdt_probe(struct platform_device *pdev)
> > struct device *dev = &pdev->dev;
> > struct resource *wdt_mem;
> > struct watchdog_device *wdd;
> > + struct davinci_wdt_device *davinci_wdt;
> > +
> > + davinci_wdt = devm_kzalloc(dev, sizeof(*davinci_wdt), GFP_KERNEL);
> > + if (!davinci_wdt)
> > + return -ENOMEM;
> >
> > - wdt_clk = devm_clk_get(dev, NULL);
> > - if (WARN_ON(IS_ERR(wdt_clk)))
> > - return PTR_ERR(wdt_clk);
> > + davinci_wdt->clk = devm_clk_get(dev, NULL);
> > + if (WARN_ON(IS_ERR(davinci_wdt->clk)))
> > + return PTR_ERR(davinci_wdt->clk);
> >
> > - clk_prepare_enable(wdt_clk);
> > + clk_prepare_enable(davinci_wdt->clk);
> >
> > - wdd = &wdt_wdd;
> > + platform_set_drvdata(pdev, davinci_wdt);
> > +
> > + wdd = &davinci_wdt->wdd;
> > wdd->info = &davinci_wdt_info;
> > wdd->ops = &davinci_wdt_ops;
> > wdd->min_timeout = 1;
> > @@ -142,12 +161,13 @@ static int davinci_wdt_probe(struct platform_device *pdev)
> >
> > dev_info(dev, "heartbeat %d sec\n", wdd->timeout);
> >
> > + watchdog_set_drvdata(wdd, davinci_wdt);
> > watchdog_set_nowayout(wdd, WATCHDOG_NOWAYOUT);
> >
> > wdt_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > - wdt_base = devm_ioremap_resource(dev, wdt_mem);
> > - if (IS_ERR(wdt_base))
> > - return PTR_ERR(wdt_base);
> > + davinci_wdt->base = devm_ioremap_resource(dev, wdt_mem);
> > + if (IS_ERR(davinci_wdt->base))
> > + return PTR_ERR(davinci_wdt->base);
> You should free up davinci_wdt memory before returning, right ?
>
No, devm should take care of that.

Guenter

> Other than that patch looks fine to me. With above fixed,
> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
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