2012-10-27 15:09:58

by Francesco Lavra

[permalink] [raw]
Subject: Re: [PATCH 4/4] mfd: ab8500: add devicetree support for chargalg

On 10/25/2012 08:30 AM, Rajanikanth H.V wrote:
> From: "Rajanikanth H.V" <[email protected]>
>
> This patch adds device tree support for charging algorithm
> driver
>
> Signed-off-by: Rajanikanth H.V <[email protected]>
[...]
> diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c
> index 88b5cc1..829fcfd 100644
> --- a/drivers/power/abx500_chargalg.c
> +++ b/drivers/power/abx500_chargalg.c
> @@ -21,6 +21,8 @@
> #include <linux/completion.h>
> #include <linux/workqueue.h>
> #include <linux/kobject.h>
> +#include <linux/of.h>
> +#include <linux/mfd/core.h>
> #include <linux/mfd/abx500.h>
> #include <linux/mfd/abx500/ux500_chargalg.h>
> #include <linux/mfd/abx500/ab8500-bm.h>
> @@ -231,7 +233,6 @@ struct abx500_chargalg {
> struct abx500_chargalg_charger_info chg_info;
> struct abx500_chargalg_battery_data batt_data;
> struct abx500_chargalg_suspension_status susp_status;
> - struct abx500_bmdevs_plat_data *pdata;

pdata should be removed from the description of the struct members as well.

> struct abx500_bm_data *bat;
> struct power_supply chargalg_psy;
> struct ux500_charger *ac_chg;
> @@ -1795,25 +1796,45 @@ static int __devexit abx500_chargalg_remove(struct platform_device *pdev)
> flush_scheduled_work();
> power_supply_unregister(&di->chargalg_psy);
> platform_set_drvdata(pdev, NULL);
> - kfree(di);
>
> return 0;
> }
>
> +static char *supply_interface[] = {
> + "ab8500_fg",
> +};
> +
> static int __devinit abx500_chargalg_probe(struct platform_device *pdev)
> {
> - struct abx500_bmdevs_plat_data *plat_data;
> + struct device_node *np = pdev->dev.of_node;
> + struct abx500_chargalg *di;
> int ret = 0;
>
> - struct abx500_chargalg *di =
> - kzalloc(sizeof(struct abx500_chargalg), GFP_KERNEL);
> - if (!di)
> + di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
> + if (!di) {
> + dev_err(&pdev->dev, "%s no mem for ab8500_chargalg\n", __func__);
> return -ENOMEM;
> + }
> + di->bat = pdev->mfd_cell->platform_data;
> + if (!di->bat) {
> + if (np) {
> + ret = bmdevs_of_probe(&pdev->dev, np, &di->bat);
> + if (ret) {
> + dev_err(&pdev->dev,
> + "failed to get battery information\n");
> + return ret;
> + }
> + } else {
> + dev_err(&pdev->dev, "missing dt node for ab8500_chargalg\n");
> + return -EINVAL;
> + }
> + } else {
> + dev_info(&pdev->dev, "falling back to legacy platform data\n");
> + printk("%s falling back to legacy platform data\n", __func__);

You forgot to remove the printk() call.

--
Francesco