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Message-ID: <20080104002907.GA767@zarina>
Date: Fri, 4 Jan 2008 03:29:07 +0300
From: Anton Vorontsov <cbouatmailru@...il.com>
To: Dmitry Baryshkov <dbaryshkov@...il.com>
Cc: linux-kernel@...r.kernel.org, cbou@...l.ru, dwmw2@...radead.org
Subject: Re: [PATCH] pda-power: only register available psu
Hi Dmitry,
On Thu, Jan 03, 2008 at 03:53:19AM +0300, Dmitry Baryshkov wrote:
> Currently pda-power adds both ac and usb power supply units.
> This patch fixes it so that psu are added only if they are enabled.
Thanks for the patch, this should be fixed of course. A comment
though...
> Signed-off-by: Dmitry Baryshkov <dbaryshkov@...il.com>
>
> diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
> index c058f28..42eac09 100644
> --- a/drivers/power/pda_power.c
> +++ b/drivers/power/pda_power.c
[...]
> if (ac_irq) {
> + ret = power_supply_register(&pdev->dev, &pda_power_supplies[0]);
I don't think we should check for IRQs when determining which one
of power supplies to register. Better use is_{ac,usb}_online
callbacks, this will not produce an obstacle to implement polling --
when irqs aren't mandatory. I'll send my two pending patches to show
the idea.
For this particular issue, I think something like that should work.
If it works for you, I'll commit that version, preserving your
authorship, of course.
---
diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
index c058f28..d98622f 100644
--- a/drivers/power/pda_power.c
+++ b/drivers/power/pda_power.c
@@ -168,66 +168,74 @@ static int pda_power_probe(struct platform_device *pdev)
pda_power_supplies[1].num_supplicants = pdata->num_supplicants;
}
- ret = power_supply_register(&pdev->dev, &pda_power_supplies[0]);
- if (ret) {
- dev_err(dev, "failed to register %s power supply\n",
- pda_power_supplies[0].name);
- goto supply0_failed;
- }
+ if (pdata->is_ac_online) {
+ ret = power_supply_register(&pdev->dev, &pda_power_supplies[0]);
+ if (ret) {
+ dev_err(dev, "failed to register %s power supply\n",
+ pda_power_supplies[0].name);
+ goto ac_supply_failed;
+ }
- ret = power_supply_register(&pdev->dev, &pda_power_supplies[1]);
- if (ret) {
- dev_err(dev, "failed to register %s power supply\n",
- pda_power_supplies[1].name);
- goto supply1_failed;
+ if (ac_irq) {
+ ret = request_irq(ac_irq->start, power_changed_isr,
+ get_irq_flags(ac_irq), ac_irq->name,
+ &pda_power_supplies[0]);
+ if (ret) {
+ dev_err(dev, "request ac irq failed\n");
+ goto ac_irq_failed;
+ }
+ }
}
- if (ac_irq) {
- ret = request_irq(ac_irq->start, power_changed_isr,
- get_irq_flags(ac_irq), ac_irq->name,
- &pda_power_supplies[0]);
+ if (pdata->is_usb_online) {
+ ret = power_supply_register(&pdev->dev, &pda_power_supplies[1]);
if (ret) {
- dev_err(dev, "request ac irq failed\n");
- goto ac_irq_failed;
+ dev_err(dev, "failed to register %s power supply\n",
+ pda_power_supplies[1].name);
+ goto usb_supply_failed;
}
- }
- if (usb_irq) {
- ret = request_irq(usb_irq->start, power_changed_isr,
- get_irq_flags(usb_irq), usb_irq->name,
- &pda_power_supplies[1]);
- if (ret) {
- dev_err(dev, "request usb irq failed\n");
- goto usb_irq_failed;
+ if (usb_irq) {
+ ret = request_irq(usb_irq->start, power_changed_isr,
+ get_irq_flags(usb_irq),
+ usb_irq->name,
+ &pda_power_supplies[1]);
+ if (ret) {
+ dev_err(dev, "request usb irq failed\n");
+ goto usb_irq_failed;
+ }
}
}
- goto success;
+ return 0;
usb_irq_failed:
- if (ac_irq)
+ if (pdata->is_usb_online)
+ power_supply_unregister(&pda_power_supplies[1]);
+usb_supply_failed:
+ if (pdata->is_ac_online && ac_irq)
free_irq(ac_irq->start, &pda_power_supplies[0]);
ac_irq_failed:
- power_supply_unregister(&pda_power_supplies[1]);
-supply1_failed:
- power_supply_unregister(&pda_power_supplies[0]);
-supply0_failed:
+ if (pdata->is_ac_online)
+ power_supply_unregister(&pda_power_supplies[0]);
+ac_supply_failed:
noirqs:
wrongid:
-success:
return ret;
}
static int pda_power_remove(struct platform_device *pdev)
{
- if (usb_irq)
+ if (pdata->is_usb_online && usb_irq)
free_irq(usb_irq->start, &pda_power_supplies[1]);
- if (ac_irq)
+ if (pdata->is_ac_online && ac_irq)
free_irq(ac_irq->start, &pda_power_supplies[0]);
del_timer_sync(&charger_timer);
del_timer_sync(&supply_timer);
- power_supply_unregister(&pda_power_supplies[1]);
- power_supply_unregister(&pda_power_supplies[0]);
+ if (pdata->is_usb_online)
+ power_supply_unregister(&pda_power_supplies[1]);
+ if (pdata->is_ac_online)
+ power_supply_unregister(&pda_power_supplies[0]);
return 0;
}
--
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