Messages in this thread | | | Date | Mon, 24 Feb 2014 10:00:41 -0800 | From | Bjorn Andersson <> | Subject | Re: [PATCH v3 2/2] i2c: New bus driver for the Qualcomm QUP I2C controller |
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On Thu 20 Feb 18:53 PST 2014, Emilio L?pez wrote:
> Hi Bjorn, > > El 20/02/14 21:38, Bjorn Andersson escribió: [...] > > + clk_freq = 100000; > > + if (!of_property_read_u32(node, "clock-frequency", &val)) > > + clk_freq = val; > > val will be modified only if no error occurs, so you may rewrite this > bit as > > + u32 clk_freq = 100000; > ... > + of_property_read_u32(node, "clock-frequency", &clk_freq)
Seems the two conventions used in the kernel is either your proposal or "if fail the assign default". So I'll change this.
> > > + > > + /* We support frequencies up to FAST Mode (400KHz) */ > > + if (clk_freq <= 0 || clk_freq > 400000) { > > And you can drop the < check when it's unsigned.
Indeed!
> > > + dev_err(qup->dev, "clock frequency not supported %d\n", > > + clk_freq); > > + return -EIO; > > EIO?
EINVAL
> > Cheers, > > Emilio
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