Re: [PATCH] USB: cdc-acm: fix minor-number release
From: Oliver Neukum <oneukum@suse.com>
Date: 2021-09-06 13:02:55
Also in:
lkml, stable
On 06.09.21 14:43, Johan Hovold wrote:
quoted hunk ↗ jump to hunk
@@ -1323,8 +1324,10 @@ static int acm_probe(struct usb_interface *intf, usb_get_intf(acm->control); /* undone in destruct() */ minor = acm_alloc_minor(acm); - if (minor < 0) + if (minor < 0) { + acm->minor = ACM_TTY_MINORS; goto err_put_port;
Hi, Congratulations for catching that one. May I request to improve understandability of the code that you give the constant a distinct name for this purpose? Something like ACM_MINOR_POISON or ACM_INVALID_MINOR so that normal people can understand the fixed code? Regards Oliver