| Message ID | 20240113-pmi632-typec-v2-5-182d9aa0a5b3@linaro.org |
|---|---|
| State | Accepted |
| Commit | f2e5d3de7e1fbf24483e7f996e519b3ebc3935a1 |
| Headers | show |
| Series | usb: typec: qcom-pmic-typec: enable support for PMI632 PMIC | expand |
Hi Dmitry, Am Samstag, 13. Januar 2024, 21:55:48 CET schrieb Dmitry Baryshkov: > If the PD is disabled for the port, port->pds will be left as NULL, > which causes the following crash during caps intilisation. Fix the > crash. > > Unable to handle kernel NULL pointer dereference at virtual address > 0000000000000000 Call trace: > tcpm_register_port+0xaec/0xc44 > qcom_pmic_typec_probe+0x1a4/0x254 > platform_probe+0x68/0xc0 > really_probe+0x148/0x2ac > __driver_probe_device+0x78/0x12c > driver_probe_device+0xd8/0x160 > Bluetooth: hci0: QCA Product ID :0x0000000a > __device_attach_driver+0xb8/0x138 > bus_for_each_drv+0x80/0xdc > Bluetooth: hci0: QCA SOC Version :0x40020150 > __device_attach+0x9c/0x188 > device_initial_probe+0x14/0x20 > bus_probe_device+0xac/0xb0 > deferred_probe_work_func+0x8c/0xc8 > process_one_work+0x1ec/0x51c > worker_thread+0x1ec/0x3e4 > kthread+0x120/0x124 > ret_from_fork+0x10/0x20 > > Fixes: cd099cde4ed2 ("usb: typec: tcpm: Support multiple capabilities") > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/usb/typec/tcpm/tcpm.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c > index 5945e3a2b0f7..a0978ed1a257 100644 > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -6848,7 +6848,8 @@ struct tcpm_port *tcpm_register_port(struct device > *dev, struct tcpc_dev *tcpc) if (err) > goto out_role_sw_put; > > - port->typec_caps.pd = port->pds[0]; > + if (port->pds) I'm wondering if the check should be for port->pd_supported instead. Nevertheless this works on my "pd-disable" platform as well. Best regards, Alexander > + port->typec_caps.pd = port->pds[0]; > > port->typec_port = typec_register_port(port->dev, &port- >typec_caps); > if (IS_ERR(port->typec_port)) {
On Sat, Jan 13, 2024 at 10:55:48PM +0200, Dmitry Baryshkov wrote: > If the PD is disabled for the port, port->pds will be left as NULL, > which causes the following crash during caps intilisation. Fix the > crash. > > Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 > Call trace: > tcpm_register_port+0xaec/0xc44 > qcom_pmic_typec_probe+0x1a4/0x254 > platform_probe+0x68/0xc0 > really_probe+0x148/0x2ac > __driver_probe_device+0x78/0x12c > driver_probe_device+0xd8/0x160 > Bluetooth: hci0: QCA Product ID :0x0000000a > __device_attach_driver+0xb8/0x138 > bus_for_each_drv+0x80/0xdc > Bluetooth: hci0: QCA SOC Version :0x40020150 > __device_attach+0x9c/0x188 > device_initial_probe+0x14/0x20 > bus_probe_device+0xac/0xb0 > deferred_probe_work_func+0x8c/0xc8 > process_one_work+0x1ec/0x51c > worker_thread+0x1ec/0x3e4 > kthread+0x120/0x124 > ret_from_fork+0x10/0x20 > > Fixes: cd099cde4ed2 ("usb: typec: tcpm: Support multiple capabilities") > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/tcpm/tcpm.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c > index 5945e3a2b0f7..a0978ed1a257 100644 > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -6848,7 +6848,8 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) > if (err) > goto out_role_sw_put; > > - port->typec_caps.pd = port->pds[0]; > + if (port->pds) > + port->typec_caps.pd = port->pds[0]; > > port->typec_port = typec_register_port(port->dev, &port->typec_caps); > if (IS_ERR(port->typec_port)) { > > -- > 2.39.2
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 5945e3a2b0f7..a0978ed1a257 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -6848,7 +6848,8 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) if (err) goto out_role_sw_put; - port->typec_caps.pd = port->pds[0]; + if (port->pds) + port->typec_caps.pd = port->pds[0]; port->typec_port = typec_register_port(port->dev, &port->typec_caps); if (IS_ERR(port->typec_port)) {
If the PD is disabled for the port, port->pds will be left as NULL, which causes the following crash during caps intilisation. Fix the crash. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Call trace: tcpm_register_port+0xaec/0xc44 qcom_pmic_typec_probe+0x1a4/0x254 platform_probe+0x68/0xc0 really_probe+0x148/0x2ac __driver_probe_device+0x78/0x12c driver_probe_device+0xd8/0x160 Bluetooth: hci0: QCA Product ID :0x0000000a __device_attach_driver+0xb8/0x138 bus_for_each_drv+0x80/0xdc Bluetooth: hci0: QCA SOC Version :0x40020150 __device_attach+0x9c/0x188 device_initial_probe+0x14/0x20 bus_probe_device+0xac/0xb0 deferred_probe_work_func+0x8c/0xc8 process_one_work+0x1ec/0x51c worker_thread+0x1ec/0x3e4 kthread+0x120/0x124 ret_from_fork+0x10/0x20 Fixes: cd099cde4ed2 ("usb: typec: tcpm: Support multiple capabilities") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/usb/typec/tcpm/tcpm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)