Ben Dooks wrote at Friday, August 05, 2011 2:15 AM:
> On Fri, Aug 05, 2011 at 03:05:21PM +0800, Axel Lin wrote:
> > The device tree bits need to be protected by CONFIG_OF guards.
> > This patch fixes below build error with "make tegra_defconfig;make".
> >
> > CC drivers/i2c/busses/i2c-tegra.o
> > drivers/i2c/busses/i2c-tegra.c: In function 'tegra_i2c_probe':
> > drivers/i2c/busses/i2c-tegra.c:615: error: implicit declaration of function 'of_get_property'
> > drivers/i2c/busses/i2c-tegra.c:616: warning: assignment makes pointer from integer without a cast
>
> It might be worth asking Grant if providing stubs for the of_ calls are
> as good idea, I'd like to avoid having #ifdef CONFIG_OF splattered around
> the place (it leads to errors).
When I first proposed the patch below, Grant said:
> ... I've been avoiding creating a
> dummy inline of of_get_property(), but not for any particularly strong
> reason other than to avoid bloating linux/of.h. I probably would
> accept a patch that added it.
So, I'll go ahead and whip up a patch to do that instead, since Ben
would prefer not to have the ifdefs in the I2C driver.
> > make[3]: *** [drivers/i2c/busses/i2c-tegra.o] Error 1
> > make[2]: *** [drivers/i2c/busses] Error 2
> > make[1]: *** [drivers/i2c] Error 2
> > make: *** [drivers] Error 2
> >
> > Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
> > ---
> > drivers/i2c/busses/i2c-tegra.c | 5 ++++-
> > 1 files changed, 4 insertions(+), 1 deletions(-)
> >
> > diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
> > index 0c6e840..1bfe85e 100644
> > --- a/drivers/i2c/busses/i2c-tegra.c
> > +++ b/drivers/i2c/busses/i2c-tegra.c
> > @@ -548,7 +548,6 @@ static int tegra_i2c_probe(struct platform_device *pdev)
> > struct resource *iomem;
> > struct clk *clk;
> > struct clk *i2c_clk;
> > - const unsigned int *prop;
> > void *base;
> > int irq;
> > int ret = 0;
> > @@ -611,11 +610,15 @@ static int tegra_i2c_probe(struct platform_device *pdev)
> > if (pdata) {
> > i2c_dev->bus_clk_rate = pdata->bus_clk_rate;
> >
> > +#ifdef CONFIG_OF
> > } else if (i2c_dev->dev->of_node) { /* if there is a device tree node ... */
> > + const unsigned int *prop;
> > +
> > prop = of_get_property(i2c_dev->dev->of_node,
> > "clock-frequency", NULL);
> > if (prop)
> > i2c_dev->bus_clk_rate = be32_to_cpup(prop);
> > +#endif
> > }
> >
> > if (pdev->id == 3)
> > --
> > 1.7.4.1
--
nvpublic
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