linux-kernel - Re: [PATCH v2 1/2] eeprom: Add IDT 89HPESx EEPROM/CSR driver

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Date:   Tue, 29 Nov 2016 20:37:50 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     srinivas.kandagatla@...aro.org, andrew@...n.ch, robh+dt@...nel.org,
        mark.rutland@....com, Sergey.Semin@...latforms.ru,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 1/2] eeprom: Add IDT 89HPESx EEPROM/CSR driver

On Tue, Nov 29, 2016 at 01:38:20AM +0300, Serge Semin wrote:
> +struct idt_89hpesx_dev {
> +	u32 eesize;
> +	bool eero;
> +	u8 eeaddr;
> +
> +	u8 inieecmd;
> +	u8 inicsrcmd;
> +	u8 iniccode;
> +
> +	atomic_t csr;
> +
> +	int (*smb_write)(struct idt_89hpesx_dev *, const struct idt_smb_seq *);
> +	int (*smb_read)(struct idt_89hpesx_dev *, struct idt_smb_seq *);
> +	struct mutex smb_mtx;
> +
> +	struct i2c_client *client;
> +
> +	struct bin_attribute *ee_file;
> +	struct dentry *csr_dir;
> +	struct dentry *csr_file;
> +};
> +#define to_pdev_kobj(__kobj) \
> +	dev_get_drvdata(container_of(__kobj, struct device, kobj))

Is it a struct device, or a kobject?  This is totally confusing to me.

And can't you just use kobj_to_dev()?

> +/*
> + * eeprom_attribute - EEPROM sysfs-node attributes
> + *
> + * NOTE Size will be changed in compliance with OF node. EEPROM attribute will
> + * be read-only as well if the corresponding flag is specified in OF node.
> + */
> +BIN_ATTR(eeprom, 0644, idt_sysfs_eeprom_read, idt_sysfs_eeprom_write,
> +	 EEPROM_DEF_SIZE);

static?

And BIN_ATTR_RW()?

thanks,

greg k-h