usb: dwc3: don't reset device side if dwc3 was configured as host-only

[Jisheng Zhang]

commit e835c0a4e23c38531dcee5ef77e8d1cf462658c7 upstream.

Commit c4a5153e87fd ("usb: dwc3: core: Power-off core/PHYs on
system_suspend in host mode") replaces check for HOST only dr_mode with
current_dr_role. But during booting, the current_dr_role isn't
initialized, thus the device side reset is always issued even if dwc3
was configured as host-only. What's more, on some platforms with host
only dwc3, aways issuing device side reset by accessing device register
block can cause kernel panic.

Fixes: c4a5153e87fd ("usb: dwc3: core: Power-off core/PHYs on
system_suspend in host mode")
Cc: stable <stable@xxxxxxxxxx>
Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxx>
Acked-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230627162018.739-1-jszhang@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/dwc3/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.4.8&id=317d6e4c12b46bde61248ea4ab5e19f68cbd1c57

I will be happy to test any patch or provide any extra logs if needed.
Thank you!

Kenta Sato