From: Johan Hovold <johan+linaro@xxxxxxxxxx>
[ Upstream commit ecd5507e72ea03659dc2cc3e4393fbf8f4e2e02a ]
Make sure that the (otherwise) optional pcs_misc IO region has been
provided in case the configuration specifies a corresponding
initialisation table to avoid crashing with malformed device trees.
Note that the related debug message is now superfluous as the region is
only used when the configuration has a pcs_misc table.
Fixes: 421c9a0e9731 ("phy: qcom: qmp: Add SDM845 PCIe QMP PHY support")
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220916102340.11520-2-johan+linaro@xxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 2d65e1f56bfc..0e0f2482827a 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2371,8 +2371,10 @@ int qcom_qmp_phy_pcie_create(struct device *dev, struct device_node *np, int id,
of_device_is_compatible(dev->of_node, "qcom,ipq6018-qmp-pcie-phy"))
qphy->pcs_misc = qphy->pcs + 0x400;
- if (!qphy->pcs_misc)
- dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
+ if (!qphy->pcs_misc) {
+ if (cfg->pcs_misc_tbl || cfg->pcs_misc_tbl_sec)
+ return -EINVAL;
+ }
snprintf(prop_name, sizeof(prop_name), "pipe%d", id);
qphy->pipe_clk = devm_get_clk_from_child(dev, np, prop_name);
--
2.35.1
