5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Minas Harutyunyan <Minas.Harutyunyan@xxxxxxxxxxxx>
commit 31f42da31417bec88158f3cf62d19db836217f1e upstream.
Added exiting from the clock gating mode on USB Reset Detect interrupt
if core in the clock gating mode.
Added new condition to check core in clock gating mode or no.
Fixes: 9b4965d77e11 ("usb: dwc2: Add exit clock gating from session request interrupt")
Fixes: 5d240efddc7f ("usb: dwc2: Add exit clock gating from wakeup interrupt")
Fixes: 16c729f90bdf ("usb: dwc2: Allow exit clock gating in urb enqueue")
Fixes: 401411bbc4e6 ("usb: dwc2: Add exit clock gating before removing driver")
CC: stable@xxxxxxxxxxxxxxx
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/cbcc2ccd37e89e339130797ed68ae4597db773ac.1708938774.git.Minas.Harutyunyan@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc2/core_intr.c | 9 ++++++---
drivers/usb/dwc2/gadget.c | 6 ++++++
drivers/usb/dwc2/hcd.c | 2 +-
drivers/usb/dwc2/platform.c | 2 +-
4 files changed, 14 insertions(+), 5 deletions(-)
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -327,7 +327,8 @@ static void dwc2_handle_session_req_intr
/* Exit gadget mode clock gating. */
if (hsotg->params.power_down ==
- DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended &&
+ !hsotg->params.no_clock_gating)
dwc2_gadget_exit_clock_gating(hsotg, 0);
}
@@ -438,7 +439,8 @@ static void dwc2_handle_wakeup_detected_
/* Exit gadget mode clock gating. */
if (hsotg->params.power_down ==
- DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended &&
+ !hsotg->params.no_clock_gating)
dwc2_gadget_exit_clock_gating(hsotg, 0);
} else {
/* Change to L0 state */
@@ -455,7 +457,8 @@ static void dwc2_handle_wakeup_detected_
}
if (hsotg->params.power_down ==
- DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended &&
+ !hsotg->params.no_clock_gating)
dwc2_host_exit_clock_gating(hsotg, 1);
/*
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3728,6 +3728,12 @@ irq_retry:
if (hsotg->in_ppd && hsotg->lx_state == DWC2_L2)
dwc2_exit_partial_power_down(hsotg, 0, true);
+ /* Exit gadget mode clock gating. */
+ if (hsotg->params.power_down ==
+ DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended &&
+ !hsotg->params.no_clock_gating)
+ dwc2_gadget_exit_clock_gating(hsotg, 0);
+
hsotg->lx_state = DWC2_L0;
}
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -4690,7 +4690,7 @@ static int _dwc2_hcd_urb_enqueue(struct
}
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_NONE &&
- hsotg->bus_suspended) {
+ hsotg->bus_suspended && !hsotg->params.no_clock_gating) {
if (dwc2_is_device_mode(hsotg))
dwc2_gadget_exit_clock_gating(hsotg, 0);
else
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -344,7 +344,7 @@ static int dwc2_driver_remove(struct pla
/* Exit clock gating when driver is removed. */
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_NONE &&
- hsotg->bus_suspended) {
+ hsotg->bus_suspended && !hsotg->params.no_clock_gating) {
if (dwc2_is_device_mode(hsotg))
dwc2_gadget_exit_clock_gating(hsotg, 0);
else
