[PATCH v2 03/10] common: bootargs: drop legacy bootargs fallback with FLEXIBLE_BOOTARGS

[Marco Felsch]

On 26-10-15 11:18, Ahmad Fatoum wrote:
> linux_bootargs_get() falls back to the legacy bootargs environment variable
> whenever the concatenation of all global.linux.bootargs.* variables comes
> out empty. That contradicts the documentation, which describes bootargs as
> the CONFIG_FLEXIBLE_BOOTARGS=n way of passing a command line, and it only
> worked until the first boot entry had run: bootscript_boot() registers
> global.linux.bootargs.dyn.ip and .dyn.root, and the separator between the
> two empty variables made the result non-empty, so the kernel got a command
> line consisting of spaces instead.
> 
> Drop the fallback and return NULL when there is nothing to pass. All
> callers already handle a NULL command line, as the fallback could return
> NULL as well.
> 
> Assisted-by: Claude:opus-5
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>

Reviewed-by: Marco Felsch <m.felsch at pengutronix.de>