Messages in this thread |  | | Date | Tue, 7 Jan 2020 18:45:46 +0100 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH AUTOSEL 4.19 102/177] nvmem: imx-ocotp: reset error status on probe |
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On Tue, Jan 07, 2020 at 03:50:59PM +0100, Sébastien Szymanski wrote: > On 12/10/19 10:31 PM, Sasha Levin wrote: > > From: Lucas Stach <l.stach@pengutronix.de> > > > > [ Upstream commit c33c585f1b3a99d53920bdac614aca461d8db06f ] > > > > If software running before the OCOTP driver is loaded left the > > controller with the error status pending, the driver will never > > be able to complete the read timing setup. Reset the error status > > on probe to make sure the controller is in usable state. > > > > Signed-off-by: Lucas Stach <l.stach@pengutronix.de> > > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> > > Link: https://lore.kernel.org/r/20191029114240.14905-6-srinivas.kandagatla@linaro.org > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > Signed-off-by: Sasha Levin <sashal@kernel.org> > > --- > > drivers/nvmem/imx-ocotp.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c > > index afb429a417fe0..926d9cc080cf4 100644 > > --- a/drivers/nvmem/imx-ocotp.c > > +++ b/drivers/nvmem/imx-ocotp.c > > @@ -466,6 +466,10 @@ static int imx_ocotp_probe(struct platform_device *pdev) > > if (IS_ERR(priv->clk)) > > return PTR_ERR(priv->clk); > > > > + clk_prepare_enable(priv->clk); > > + imx_ocotp_clr_err_if_set(priv->base); > > + clk_disable_unprepare(priv->clk); > > + > > priv->params = of_device_get_match_data(&pdev->dev); > > imx_ocotp_nvmem_config.size = 4 * priv->params->nregs; > > imx_ocotp_nvmem_config.dev = dev; > > > > Hi, > > This patch makes kernel 4.19.{92,93} hang at boot on my i.MX6ULL based > board. It hanks at > > [ 3.730078] cpu cpu0: Linked as a consumer to regulator.2 > [ 3.737760] cpu cpu0: Linked as a consumer to regulator.3 > > Full boot log is here: https://pastebin.com/TS8EFxkr > > The config is imx_v6_v7_defconfig. > > Reverting it makes the kernels boot again.
Does this also cause problems in 5.4.7 and newer?
thanks,
greg k-h
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