[UART] Why CAP_SYS_ADMIN can open non-started port?

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Hi,

while I was in the process of uart cleanup, I found this:
static int uart_startup(...) {
  ...
  retval = port->ops->startup(port);
  ...
  if (retval && capable(CAP_SYS_ADMIN))
    retval = 0;

  return retval;
}

Why CAP_SYS_ADMIN should not see the failing port startup? Does anybody
from you remember if it is for some kind of possibility to later
re-autoconfigure the port or something like that?

thanks,
-- 
js
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