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phy: qcom-qmp-combo: fix NULL-deref on runtime resume

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Commit fc64623637 ("phy: qcom-qmp-combo,usb: add support for separate
PCS_USB region") started treating the PCS_USB registers as potentially
separate from the PCS registers but used the wrong base when no PCS_USB
offset has been provided.

Fix the PCS_USB base used at runtime resume to prevent dereferencing a
NULL pointer on platforms that do not provide a PCS_USB offset (e.g.
SC7180).

Fixes: fc64623637 ("phy: qcom-qmp-combo,usb: add support for separate PCS_USB region")
Cc: stable@vger.kernel.org	# 5.20
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20221026162116.26462-1-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Johan Hovold 2022-10-26 18:21:16 +02:00 committed by Vinod Koul
parent 2a4ea83bb8
commit 04948e7571
1 changed files with 1 additions and 1 deletions
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2
drivers/phy/qualcomm/phy-qcom-qmp-combo.c
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@ -2240,7 +2240,7 @@ static void qmp_combo_enable_autonomous_mode(struct qmp_phy *qphy)
static void qmp_combo_disable_autonomous_mode(struct qmp_phy *qphy)
{
const struct qmp_phy_cfg *cfg = qphy->cfg;
void __iomem *pcs_usb = qphy->pcs_usb ?: qphy->pcs_usb;
void __iomem *pcs_usb = qphy->pcs_usb ?: qphy->pcs;
void __iomem *pcs_misc = qphy->pcs_misc;
/* Disable i/o clamp_n on resume for normal mode */