Re: [PATCH] Add sysfs support for the IPMI device interface

[Corey Minyard]

Philipp Matthias Hahn wrote:

> What happend to Dimitry Torokovs comment in
> http://marc.theaimsgroup.com/?l=linux-kernel&m=111232712029756&w=2
> and your reply in
> http://marc.theaimsgroup.com/?l=linux-kernel&m=111232954415119&w=2
> According to linux/device.h:250, class_simple_device_add() has a
> printf() like argument, so you don't need to snprintf() the name on your
> own.
>  
Thank you.  My stupid mailer ate the tabs, and you fixed that, too.  
This looks good to go in.

-Corey

> Add support for sysfs to the IPMI device interface.
>
> Signed-off-by: Corey Minyard <minyard@xxxxxxx>
> Signed-off-by: Philipp Hahn <pmhahn@xxxxxxxxxxxxx>
>
> Index: linux-2.6.12-rc1/drivers/char/ipmi/ipmi_devintf.c
> ===================================================================
> --- linux-2.6.12-rc1.orig/drivers/char/ipmi/ipmi_devintf.c
> +++ linux-2.6.12-rc1/drivers/char/ipmi/ipmi_devintf.c
> @@ -44,6 +44,7 @@
> #include <linux/ipmi.h>
> #include <asm/semaphore.h>
> #include <linux/init.h>
> +#include <linux/device.h>
>
> #define IPMI_DEVINTF_VERSION "v33"
>
> @@ -519,15 +520,21 @@
> 		 " interface.  Other values will set the major device number"
> 		 " to that value.");
>
> +static struct class *ipmi_class;
> +
> static void ipmi_new_smi(int if_num)
> {
> -	devfs_mk_cdev(MKDEV(ipmi_major, if_num),
> -		      S_IFCHR | S_IRUSR | S_IWUSR,
> +	dev_t dev = MKDEV(ipmi_major, if_num);
> +
> +	devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR,
> 		      "ipmidev/%d", if_num);
> +
> +	class_simple_device_add(ipmi_class, dev, NULL, "ipmi%d", if_num);
> }
>
> static void ipmi_smi_gone(int if_num)
> {
> +	class_simple_device_remove(ipmi_class, MKDEV(ipmi_major, if_num));
> 	devfs_remove("ipmidev/%d", if_num);
> }
>
> @@ -548,8 +555,15 @@
> 	printk(KERN_INFO "ipmi device interface version "
> 	       IPMI_DEVINTF_VERSION "\n");
>
> +	ipmi_class = class_simple_create(THIS_MODULE, "ipmi");
> +	if (IS_ERR(ipmi_class)) {
> +		printk(KERN_ERR "ipmi: can't register device class\n");
> +		return PTR_ERR(ipmi_class);
> +	}
> +
> 	rv = register_chrdev(ipmi_major, DEVICE_NAME, &ipmi_fops);
> 	if (rv < 0) {
> +		class_simple_destroy(ipmi_class);
> 		printk(KERN_ERR "ipmi: can't get major %d\n", ipmi_major);
> 		return rv;
> 	}
> @@ -563,6 +577,7 @@
> 	rv = ipmi_smi_watcher_register(&smi_watcher);
> 	if (rv) {
> 		unregister_chrdev(ipmi_major, DEVICE_NAME);
> +		class_simple_destroy(ipmi_class);
> 		printk(KERN_WARNING "ipmi: can't register smi watcher\n");
> 		return rv;
> 	}
> @@ -573,6 +588,7 @@
>
> static __exit void cleanup_ipmi(void)
> {
> +	class_simple_destroy(ipmi_class);
> 	ipmi_smi_watcher_unregister(&smi_watcher);
> 	devfs_remove(DEVICE_NAME);
> 	unregister_chrdev(ipmi_major, DEVICE_NAME);
>
> BYtE
> Philipp
>  

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