Xu YangandGreg Kroah-Hartman faa3de2d10 usb: chipidea: core: convert ci_role_switch to local variable ...

commit 8f6aa39265 upstream.

When a system contains multiple USB controllers, the global ci_role_switch
variable may be overwritten by subsequent driver initialization code.

This can cause issues in the following cases:
 - The 2nd ci_hdrc_probe() sees ci_role_switch.fwnode as non-NULL even
   though the "usb-role-switch" property is not present for the controller.
 - When the ci_hdrc device is unbound and bound again, ci_role_switch
   fwnode will not be reassigned, and the old value will be used instead.

Convert ci_role_switch to a local variable to fix these issues.

Fixes: 05559f10ed ("usb: chipidea: add role switch class support")
Cc: stable <stable@kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260427075755.3611217-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-06-19 13:37:03 +02:00

..

bits.h

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ci_hdrc_imx.c

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ci_hdrc_imx.h

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ci_hdrc_msm.c

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ci_hdrc_pci.c

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ci_hdrc_tegra.c

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ci_hdrc_usb2.c

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ci.h

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core.c

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debug.c

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host.c

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host.h

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Kconfig

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Makefile

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otg_fsm.c

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otg_fsm.h

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otg.c

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otg.h

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trace.c

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trace.h

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udc.c

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udc.h

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ulpi.c

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usbmisc_imx.c

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