On Thu, 2011-10-27 at 14:43 -0700, Miche Baker-Harvey wrote:
> Multiple HVC console terminals enabled.
Just a note on allocation.
> diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
[]
> @@ -845,6 +857,19 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,
> kref_init(&hp->kref);
>
> INIT_WORK(&hp->tty_resize, hvc_set_winsz);
> + /*
> + * make each console its own struct console.
> + * No need to do allocation and copy under lock.
> + */
> + cp = kzalloc(sizeof(*cp), GFP_KERNEL);
> + if (!cp) {
> + kfree(hp);
> + mutex_unlock(&hvc_ports_mutex);
> + return ERR_PTR(-ENOMEM);
> + }
> + memcpy(cp, &hvc_console, sizeof(*cp));
The kzalloc should be kmalloc as the allocated
memory is immediately overwritten.
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