On Sun, Jul 29, 2018 at 08:32:41AM +0200, H. Nikolaus Schaller wrote: > Hi, > > > Am 28.07.2018 um 22:35 schrieb Ladislav Michl <la...@linux-mips.org>: > > > > Hi Andreas, > > > > On Sat, Jul 28, 2018 at 06:59:14PM +0200, Andreas Kemnade wrote: > >> I got this in the kernel log: > >> [ 0.756042] omap-dmtimer-pwm dmtimer-pwm: dmtimer pdata structure NULL > >> [ 0.756134] omap-dmtimer-pwm: probe of dmtimer-pwm failed with error -22 > >> > >> the probe function has to wait until omap_dm_timer_probe() in > >> clocksource/timer-ti-dm.c has initialized pdata, so defer probing > > > > There already is a patch by David Rivshin addressing the same issue... > > Here it is: > > https://patchwork.ozlabs.org/patch/943148/ > > but hasn't arrived in linux-next.
That's because there'll be v3. > But it is questionable if a driver should dev_info() about doing deferred > probing. > IMHO, it should just do it which is how Andreas' patch works. See here: https://patchwork.ozlabs.org/patch/949659/ > >> Fixes: b7290cf6ff78 (pwm: pwm-omap-dmtimer: Adapt driver to utilize > >> dmtimer pdata ops) > >> Signed-off-by: Andreas Kemnade <andr...@kemnade.info> > >> --- > >> drivers/pwm/pwm-omap-dmtimer.c | 3 +-- > >> 1 file changed, 1 insertion(+), 2 deletions(-) > >> > >> diff --git a/drivers/pwm/pwm-omap-dmtimer.c > >> b/drivers/pwm/pwm-omap-dmtimer.c > >> index 665da3c8fbce..808835179c2e 100644 > >> --- a/drivers/pwm/pwm-omap-dmtimer.c > >> +++ b/drivers/pwm/pwm-omap-dmtimer.c > >> @@ -264,8 +264,7 @@ static int pwm_omap_dmtimer_probe(struct > >> platform_device *pdev) > >> > >> timer_pdata = dev_get_platdata(&timer_pdev->dev); > >> if (!timer_pdata) { > >> - dev_err(&pdev->dev, "dmtimer pdata structure NULL\n"); > >> - ret = -EINVAL; > >> + ret = -EPROBE_DEFER; > >> goto put; > >> } > >> > >> -- > >> 2.11.0 > >> > > BR, > Nikolaus >
