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From: Benjamin Gaignard <benjamin.gaignard@collabora.com>
To: shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kernel@collabora.com,
	Benjamin Gaignard <benjamin.gaignard@collabora.com>
Subject: [PATCH] soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready
Date: Tue, 13 Sep 2022 11:06:55 +0200	[thread overview]
Message-ID: <20220913090655.39778-1-benjamin.gaignard@collabora.com> (raw)

Depending of the boot sequence 'bus' genpd could be probed after imx8m-blk-ctrl
which led driver probe to fail. Change the returned error to allow
to defer the probe in this case.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
 drivers/soc/imx/imx8m-blk-ctrl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c
index dff7529268e4..99f5226a465b 100644
--- a/drivers/soc/imx/imx8m-blk-ctrl.c
+++ b/drivers/soc/imx/imx8m-blk-ctrl.c
@@ -215,8 +215,7 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev)
 
 	bc->bus_power_dev = genpd_dev_pm_attach_by_name(dev, "bus");
 	if (IS_ERR(bc->bus_power_dev))
-		return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev),
-				     "failed to attach power domain \"bus\"\n");
+		return -EPROBE_DEFER;
 
 	for (i = 0; i < bc_data->num_domains; i++) {
 		const struct imx8m_blk_ctrl_domain_data *data = &bc_data->domains[i];
-- 
2.32.0


WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Gaignard <benjamin.gaignard@collabora.com>
To: shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kernel@collabora.com,
	Benjamin Gaignard <benjamin.gaignard@collabora.com>
Subject: [PATCH] soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready
Date: Tue, 13 Sep 2022 11:06:55 +0200	[thread overview]
Message-ID: <20220913090655.39778-1-benjamin.gaignard@collabora.com> (raw)

Depending of the boot sequence 'bus' genpd could be probed after imx8m-blk-ctrl
which led driver probe to fail. Change the returned error to allow
to defer the probe in this case.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
 drivers/soc/imx/imx8m-blk-ctrl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c
index dff7529268e4..99f5226a465b 100644
--- a/drivers/soc/imx/imx8m-blk-ctrl.c
+++ b/drivers/soc/imx/imx8m-blk-ctrl.c
@@ -215,8 +215,7 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev)
 
 	bc->bus_power_dev = genpd_dev_pm_attach_by_name(dev, "bus");
 	if (IS_ERR(bc->bus_power_dev))
-		return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev),
-				     "failed to attach power domain \"bus\"\n");
+		return -EPROBE_DEFER;
 
 	for (i = 0; i < bc_data->num_domains; i++) {
 		const struct imx8m_blk_ctrl_domain_data *data = &bc_data->domains[i];
-- 
2.32.0


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             reply	other threads:[~2022-09-13  9:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-13  9:06 Benjamin Gaignard [this message]
2022-09-13  9:06 ` [PATCH] soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready Benjamin Gaignard
2022-09-13  9:19 ` Ahmad Fatoum
2022-09-13  9:19   ` Ahmad Fatoum

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