Re: [PATCH v3 6/6] Input: edt-ft5x06 - improve power management operations
From: Marco Felsch <hidden>
Date: 2020-01-16 13:32:26
Also in:
linux-devicetree
Hi Dmitry, On 20-01-10 08:18, Marco Felsch wrote:
On 20-01-10 08:16, Marco Felsch wrote:quoted
Hi Dmitry, On 20-01-09 17:09, Dmitry Torokhov wrote:quoted
Hi Marco, On Wed, Jan 08, 2020 at 12:10:50PM +0100, Marco Felsch wrote:quoted
+static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); + int ret; + + if (device_may_wakeup(dev)) + return 0; + + ret = regulator_enable(tsdata->vcc); + if (ret) + dev_warn(dev, "Failed to enable vcc\n");I wonder if we should not return error here instead of continuing. If device is not powered up properly we'll have hard time communicating with it.That's a reasonable point.quoted
The same is for suspend: maybe we should abort if we can't switch off regulator or write to the device.I have no strong opinion about that case but IMHO it's okay to go further if we can't switch it off. Instead we should print a warning.I just noticed that we do that already.. So the suspend case should be okay.
Is it okay to check the return val for the resume case only? I want to prepare a v4 of this patch to get this done. Regards, Marco
quoted
Regards, Marcoquoted
Thanks. -- Dmitry
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