Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751798Ab2KSGzR (ORCPT ); Mon, 19 Nov 2012 01:55:17 -0500 Received: from na3sys009aog129.obsmtp.com ([74.125.149.142]:56922 "EHLO na3sys009aog129.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751462Ab2KSGzQ (ORCPT ); Mon, 19 Nov 2012 01:55:16 -0500 Message-ID: <50A9D816.7010208@marvell.com> Date: Mon, 19 Nov 2012 14:56:22 +0800 From: Qing Xu User-Agent: Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20120714 Thunderbird/14.0 MIME-Version: 1.0 To: Anton Vorontsov Cc: "dwmw2@infradead.org" , "sameo@linux.intel.com" , "grant.likely@secretlab.ca" , "rob.herring@calxeda.com" , "haojian.zhuang@gmail.com" , Chao Xie , "linux-kernel@vger.kernel.org" , "devicetree-discuss@lists.ozlabs.org" Subject: Re: [PATCH 4/7] mfd: max8925: support dt for power supply References: <1352187764-9901-1-git-send-email-qingx@marvell.com> <20121119002447.GH29066@lizard.sbx05977.paloaca.wayport.net> In-Reply-To: <20121119002447.GH29066@lizard.sbx05977.paloaca.wayport.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-OriginalArrivalTime: 19 Nov 2012 06:55:07.0768 (UTC) FILETIME=[CF988780:01CDC622] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5259 Lines: 152 On 11/19/2012 08:24 AM, Anton Vorontsov wrote: > On Tue, Nov 06, 2012 at 03:42:44PM +0800, Qing Xu wrote: >> From: Qing Xu >> >> Signed-off-by: Qing Xu >> --- > W/ this patch I'm getting this warning: > > CC drivers/power/max8925_power.o > drivers/power/max8925_power.c: In function ‘max8925_power_probe’: > drivers/power/max8925_power.c:479:3: warning: statement with no effect > [-Wunused-value] > >> drivers/power/max8925_power.c | 57 ++++++++++++++++++++++++++++++++++++---- >> 1 files changed, 51 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c >> index daa333b..dd2ac2d 100644 >> --- a/drivers/power/max8925_power.c >> +++ b/drivers/power/max8925_power.c >> @@ -426,14 +426,58 @@ static __devexit int max8925_deinit_charger(struct max8925_power_info *info) >> return 0; >> } >> >> +#ifdef CONFIG_OF >> +static int max8925_power_dt_init(struct platform_device *pdev, >> + struct max8925_power_pdata *pdata) >> +{ >> + struct device_node *nproot = pdev->dev.parent->of_node, *np; >> + int batt_detect, topoff_threshold, fast_charge, >> + no_temp_support, no_insert_detect; > One variable declaration per line please. > >> + >> + if (!nproot) >> + return -ENODEV; > Please add an empty line here. > >> + np = of_find_node_by_name(nproot, "charger"); >> + if (!np) { >> + dev_err(&pdev->dev, "failed to find charger node\n"); >> + return -ENODEV; >> + } > ditto. > >> + of_property_read_u32(np, "topoff-threshold", &topoff_threshold); >> + of_property_read_u32(np, "batt-detect", &batt_detect); >> + of_property_read_u32(np, "fast-charge", &fast_charge); >> + of_property_read_u32(np, "no-insert-detect", &no_insert_detect); >> + of_property_read_u32(np, "no-temp-support", &no_temp_support); >> + >> + pdata->batt_detect = batt_detect; >> + pdata->fast_charge = fast_charge; >> + pdata->topoff_threshold = topoff_threshold; >> + pdata->no_insert_detect = no_insert_detect; >> + pdata->no_temp_support = no_temp_support; > ditto > >> + pr_err("batt_detect%d, topoff_threshold%d, fast_charge%d,no_temp_support%d, no_insert_detect%d\n", >> + batt_detect, topoff_threshold, fast_charge, >> + no_temp_support, no_insert_detect); > pr_err, are you sure? :) > >> + return 0; >> +} >> +#else >> +#define max8925_power_dt_init(x, y) (-1) > You should make it static inline function to get rid of the warning above. > >> +#endif >> + >> +static char *power_supplicants[] = { >> + "max8925-battery", >> +}; >> + >> static __devinit int max8925_power_probe(struct platform_device *pdev) >> { >> struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent); >> - struct max8925_power_pdata *pdata = NULL; >> + struct max8925_power_pdata *pdata = pdev->dev.platform_data; >> struct max8925_power_info *info; >> int ret; >> >> - pdata = pdev->dev.platform_data; >> + if (pdev->dev.parent->of_node && !pdata) { >> + pdata = devm_kzalloc(&pdev->dev, >> + sizeof(struct max8925_power_pdata), >> + GFP_KERNEL); >> > Please move this logic into max8925_power_dt_init(). > So it will look like > > if (!pdata) > pdata = max8925_power_dt_init(pdev); > if (!pdata) { > dev_err(...); > return ...; > } > >> + max8925_power_dt_init(pdev, pdata); >> + } >> if (!pdata) { >> dev_err(&pdev->dev, "platform data isn't assigned to " >> "power supply\n"); >> @@ -453,8 +497,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) >> info->ac.properties = max8925_ac_props; >> info->ac.num_properties = ARRAY_SIZE(max8925_ac_props); >> info->ac.get_property = max8925_ac_get_prop; >> - info->ac.supplied_to = pdata->supplied_to; >> - info->ac.num_supplicants = pdata->num_supplicants; >> + info->ac.supplied_to = power_supplicants; >> + info->ac.num_supplicants = ARRAY_SIZE(power_supplicants); >> ret = power_supply_register(&pdev->dev, &info->ac); >> if (ret) >> goto out; >> @@ -465,8 +509,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) >> info->usb.properties = max8925_usb_props; >> info->usb.num_properties = ARRAY_SIZE(max8925_usb_props); >> info->usb.get_property = max8925_usb_get_prop; >> - info->usb.supplied_to = pdata->supplied_to; >> - info->usb.num_supplicants = pdata->num_supplicants; >> + info->usb.supplied_to = power_supplicants; >> + info->usb.num_supplicants = ARRAY_SIZE(power_supplicants); >> >> ret = power_supply_register(&pdev->dev, &info->usb); >> if (ret) >> @@ -491,6 +535,7 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) >> info->no_insert_detect = pdata->no_insert_detect; >> >> max8925_init_charger(chip, info); >> + > This change is unrelated. > >> return 0; >> out_battery: >> power_supply_unregister(&info->battery); >> -- >> 1.7.0.4 > Thanks, > Anton. Anton, thanks for your very careful review! I updated in patch v2, please help to review it again. Thanks, Qing -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/