pwm-bl: regression on all pxa platforms

Robert Jarzmik [off-list ref] writes:

Hi Thierry,

Since a bit of time, the PWM backlight based pxa platforms are broken.
All of these platforms rely on a registering such as the one in [1].

At least I think the commit 68feaca0b13e ("backlight: pwm: Handle EPROBE_DEFER
while requesting the PWM") breaks my platforms because :
 (a) no pwm table is added (legacy platforms)
 (b) in this case, in pwm_get(), pmw_lookup_list is empty, and therefore chosen
      == NULL, and therefore pwm_get() returns NULL, and pwm_get() return
      -EPROBE_DEFER
 (c) as a consequence, this code is unreachable in pwm_bl.c :
	if (IS_ERR(pb->pwm)) {
		ret = PTR_ERR(pb->pwm);
		dev_info(&pdev->dev, "%s:%d(): %d\n", __func__, __LINE__, ret);
		if (ret == -EPROBE_DEFER)
			goto err_alloc;

		dev_err(&pdev->dev, "unable to request PWM, trying legacy API\n");
		pb->legacy = true;
		pb->pwm = pwm_request(data->pwm_id, "pwm-backlight");

Could you either revert 68feaca0b13e or find a better solution to repair the
legacy platorms please ?

Ok, no answer, so I'll post the revert.

Cheers.

-- 
Robert