All of lore.kernel.org
 help / color / mirror / Atom feed
From: Johan Hovold <johan+linaro@kernel.org>
To: Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>,
	Andy Gross <agross@kernel.org>,
	linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Johan Hovold <johan+linaro@kernel.org>,
	stable@vger.kernel.org
Subject: [PATCH 1/2] phy: qcom-qmp-combo: fix init-count imbalance
Date: Tue,  2 May 2023 12:38:09 +0200	[thread overview]
Message-ID: <20230502103810.12061-2-johan+linaro@kernel.org> (raw)
In-Reply-To: <20230502103810.12061-1-johan+linaro@kernel.org>

The init counter is not decremented on initialisation errors, which
prevents retrying initialisation and can lead to the runtime suspend
callback attempting to disable resources that have never been enabled.

Add the missing decrement on initialisation errors so that the counter
reflects the state of the device.

Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")
Cc: stable@vger.kernel.org	# 4.12
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index c1483e157af4..ae412d64b426 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -2487,7 +2487,7 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
 	ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
 	if (ret) {
 		dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret);
-		goto err_unlock;
+		goto err_decrement_count;
 	}
 
 	ret = reset_control_bulk_assert(cfg->num_resets, qmp->resets);
@@ -2537,7 +2537,8 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
 	reset_control_bulk_assert(cfg->num_resets, qmp->resets);
 err_disable_regulators:
 	regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
-err_unlock:
+err_decrement_count:
+	qmp->init_count--;
 	mutex_unlock(&qmp->phy_mutex);
 
 	return ret;
-- 
2.39.2


-- 
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy

WARNING: multiple messages have this Message-ID (diff)
From: Johan Hovold <johan+linaro@kernel.org>
To: Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>,
	Andy Gross <agross@kernel.org>,
	linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Johan Hovold <johan+linaro@kernel.org>,
	stable@vger.kernel.org
Subject: [PATCH 1/2] phy: qcom-qmp-combo: fix init-count imbalance
Date: Tue,  2 May 2023 12:38:09 +0200	[thread overview]
Message-ID: <20230502103810.12061-2-johan+linaro@kernel.org> (raw)
In-Reply-To: <20230502103810.12061-1-johan+linaro@kernel.org>

The init counter is not decremented on initialisation errors, which
prevents retrying initialisation and can lead to the runtime suspend
callback attempting to disable resources that have never been enabled.

Add the missing decrement on initialisation errors so that the counter
reflects the state of the device.

Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")
Cc: stable@vger.kernel.org	# 4.12
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index c1483e157af4..ae412d64b426 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -2487,7 +2487,7 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
 	ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
 	if (ret) {
 		dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret);
-		goto err_unlock;
+		goto err_decrement_count;
 	}
 
 	ret = reset_control_bulk_assert(cfg->num_resets, qmp->resets);
@@ -2537,7 +2537,8 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
 	reset_control_bulk_assert(cfg->num_resets, qmp->resets);
 err_disable_regulators:
 	regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
-err_unlock:
+err_decrement_count:
+	qmp->init_count--;
 	mutex_unlock(&qmp->phy_mutex);
 
 	return ret;
-- 
2.39.2


  reply	other threads:[~2023-05-02 10:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-02 10:38 [PATCH 0/2] phy: qcom-qmp: fix init-count imbalance Johan Hovold
2023-05-02 10:38 ` Johan Hovold
2023-05-02 10:38 ` Johan Hovold [this message]
2023-05-02 10:38   ` [PATCH 1/2] phy: qcom-qmp-combo: " Johan Hovold
2023-05-02 12:24   ` Dmitry Baryshkov
2023-05-02 12:24     ` Dmitry Baryshkov
2023-05-02 10:38 ` [PATCH 2/2] phy: qcom-qmp-pcie-msm8996: " Johan Hovold
2023-05-02 10:38   ` Johan Hovold
2023-05-02 12:24   ` Dmitry Baryshkov
2023-05-02 12:24     ` Dmitry Baryshkov
2023-05-08  9:09 ` [PATCH 0/2] phy: qcom-qmp: " Vinod Koul
2023-05-08  9:09   ` Vinod Koul

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20230502103810.12061-2-johan+linaro@kernel.org \
    --to=johan+linaro@kernel.org \
    --cc=agross@kernel.org \
    --cc=andersson@kernel.org \
    --cc=kishon@kernel.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-phy@lists.infradead.org \
    --cc=stable@vger.kernel.org \
    --cc=vkoul@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.