Re: [PATCH] of: do not leak console options

From: Petr Mladek
Date: Tue Oct 03 2017 - 03:20:16 EST

On Tue 2017-09-26 15:25:10, Sergey Senozhatsky wrote:
> Do not strdup() console options. It seems that the only reason for
> it to be strdup()-ed was a compilation warning: printk, UART and
> console drivers, for some reason, expect char pointer instead of
> const char pointer. So we can just pass `of_stdout_options', but
> need to cast it to char pointer. A better fix would be to change
> printk, console drivers and UART to accept const char `options';
> but that will take time - there are lots of drivers to update.
> The patch also fixes a possible memory leak: add_preferred_console()
> can fail, but we don't kfree() options.
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>

Of course, it would be better to change add_preferred_console().
But it would trigger many other changes. This alternative
"temporary" change looks safe to me. Feel free to use

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,