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[31.26.103.238]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-49cf755c22esm483644155e9.0.2026.09.09.08.14.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2026 08:14:57 -0700 (PDT) From: Oleg Keri To: Vinod Koul , Neil Armstrong , Manivannan Sadhasivam , Bjorn Andersson , Johan Hovold Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, Michael Scott Subject: [PATCH 2/2] phy: qcom: qmp-combo: check qmp_combo_com_init() in the typec callbacks Date: Wed, 9 Sep 2026 17:14:43 +0200 Message-ID: <20260909151443.10276-3-okerixx@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909151443.10276-1-okerixx@gmail.com> References: <20260909151443.10276-1-okerixx@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit qmp_combo_typec_switch_set() and qmp_combo_typec_mux_set() tear the common block down and bring it straight back up on an orientation or altmode change, but they discard the result of the bringup: qmp_combo_com_exit(qmp, true); qmp_combo_com_init(qmp, true); if (qmp->usb_init_count) qmp_combo_usb_power_on(qmp->usb_phy); If qmp_combo_com_init() fails - a regulator, a reset or clk_bulk_prepare_enable() - it unwinds what it had brought up and returns an error, leaving the clocks disabled. Both callbacks then carry on and qmp_combo_usb_power_on(), and dp_aux_init() after it, write PHY registers with no clock running. Propagate the failure instead. Fixes: 2851117f8f42 ("phy: qcom-qmp-combo: Introduce orientation switching") Signed-off-by: Oleg Keri --- drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c index 7d740ed0ce16..44b6f29926dc 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c @@ -4924,6 +4924,7 @@ static int qmp_combo_typec_switch_set(struct typec_switch_dev *sw, { struct qmp_combo *qmp = typec_switch_get_drvdata(sw); const struct qmp_phy_cfg *cfg = qmp->cfg; + int ret = 0; if (orientation == qmp->orientation || orientation == TYPEC_ORIENTATION_NONE) return 0; @@ -4938,15 +4939,19 @@ static int qmp_combo_typec_switch_set(struct typec_switch_dev *sw, qmp_combo_usb_power_off(qmp->usb_phy); qmp_combo_com_exit(qmp, true); - qmp_combo_com_init(qmp, true); + ret = qmp_combo_com_init(qmp, true); + if (ret) + goto out; + if (qmp->usb_init_count) qmp_combo_usb_power_on(qmp->usb_phy); if (qmp->dp_init_count) cfg->dp_aux_init(qmp); } +out: mutex_unlock(&qmp->phy_mutex); - return 0; + return ret; } static int qmp_combo_typec_mux_set(struct typec_mux_dev *mux, struct typec_mux_state *state) @@ -4955,6 +4960,7 @@ static int qmp_combo_typec_mux_set(struct typec_mux_dev *mux, struct typec_mux_s const struct qmp_phy_cfg *cfg = qmp->cfg; enum qmpphy_mode new_mode; unsigned int svid; + int ret; guard(mutex)(&qmp->phy_mutex); @@ -5012,7 +5018,9 @@ static int qmp_combo_typec_mux_set(struct typec_mux_dev *mux, struct typec_mux_s qmp_combo_com_exit(qmp, true); /* Now everything's powered down, power up the right PHYs */ - qmp_combo_com_init(qmp, true); + ret = qmp_combo_com_init(qmp, true); + if (ret) + return ret; if (new_mode == QMPPHY_MODE_DP_ONLY) { if (qmp->usb_init_count) -- 2.55.0