[PATCH] usb: storage: make disk cdev name configurable via Kconfig

[chalianis1 at gmail.com]

On 2026-06-30 12:41 +0000, Sascha Hauer wrote:
> Hi,
> 
> On 2026-06-23 10:26, chalianis1 wrote:
> > From: Anis Chali <anis.chali at ro-main.com>
> > 
> > Add USBDISK_NAME string option to allow customizing the USB storage
> > device name, defaulting to "disk" to preserve existing behaviour.
> 
> I just sent a patch which registers USB storage devices with usbdiskx
> which doesn't require compile time changes. I hope that suits your needs
> as well.
> 
> Sascha
>
Hi,

In my side I am migrating to master so removed my patch for this and
I noticed that alias is not mounted to be used as /mnt/usbdiskX, I am
just asking to know if it the expected behaviour in which case I will
for an other way to get it mounted as /mnt/usbdisk0

Best regards.

Anis  
> > 
> > Signed-off-by: Anis Chali <anis.chali at ro-main.com>
> > ---
> >  drivers/usb/storage/Kconfig | 5 +++++
> >  drivers/usb/storage/usb.c   | 6 +++---
> >  2 files changed, 8 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
> > index efca9874d5..90a62a9d24 100644
> > --- a/drivers/usb/storage/Kconfig
> > +++ b/drivers/usb/storage/Kconfig
> > @@ -2,3 +2,8 @@
> >  config USB_STORAGE
> >  	tristate "USB Mass Storage support"
> >  	select DISK
> > +
> > +config USBDISK_NAME
> > +	string "USB storage disk name"
> > +	depends on USB_STORAGE
> > +	default "disk"
> > diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
> > index b3116dc6e6..b6944f531d 100644
> > --- a/drivers/usb/storage/usb.c
> > +++ b/drivers/usb/storage/usb.c
> > @@ -414,12 +414,12 @@ static int usb_stor_add_blkdev(struct us_data *us, unsigned char lun)
> >  	if (result < 0)
> >  		goto BadDevice;
> >  
> > -	result = cdev_find_free_index("disk");
> > +	result = cdev_find_free_index(CONFIG_USBDISK_NAME);
> >  	if (result == -1)
> >  		pr_err("Cannot find a free number for the disk node\n");
> > -	dev_info(dev, "registering as disk%d\n", result);
> > +	dev_info(dev, "registering as %s%d\n", CONFIG_USBDISK_NAME, result);
> >  
> > -	pblk_dev->blk.cdev.name = basprintf("disk%d", result);
> > +	pblk_dev->blk.cdev.name = basprintf("%s%d", CONFIG_USBDISK_NAME, result);
> >  	pblk_dev->blk.blockbits = SECTOR_SHIFT;
> >  	pblk_dev->blk.type = BLK_TYPE_USB;
> >  	pblk_dev->blk.removable = true;
> > -- 
> > 2.54.0
> > 
> > 
> 
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> 
>