Merge branch 'pci/pwrctrl'

- Rename pwrctrl Kconfig symbols from 'PWRCTL' to 'PWRCTRL' to match the
  filename paths.  Retain old deprecated symbols for compatibility, except
  for the pwrctrl slot driver (PCI_PWRCTRL_SLOT) (Johan Hovold)

- When unregistering pwrctrl, cancel outstanding rescan work before
  cleaning up data structures to avoid use-after-free issues (Brian Norris)

* pci/pwrctrl:
  arm64: Kconfig: switch to HAVE_PWRCTRL
  wifi: ath12k: switch to PCI_PWRCTRL_PWRSEQ
  wifi: ath11k: switch to PCI_PWRCTRL_PWRSEQ
  PCI/pwrctrl: Rename pwrctrl Kconfig symbols and slot module
  PCI/pwrctrl: Cancel outstanding rescan work when unregistering

Author: bjorn-helgaas

arch/arm64/Kconfig.platforms

@@ -269,7 +269,7 @@ config ARCH_QCOM
 	bool "Qualcomm Platforms"
 	select GPIOLIB
 	select PINCTRL
-	select HAVE_PWRCTL if PCI
+	select HAVE_PWRCTRL if PCI
 	help
 	  This enables support for the ARMv8 based Qualcomm chipsets.
 

drivers/net/wireless/ath/ath11k/Kconfig

@@ -24,7 +24,7 @@ config ATH11K_PCI
 	select MHI_BUS
 	select QRTR
 	select QRTR_MHI
-	select PCI_PWRCTL_PWRSEQ if HAVE_PWRCTL
+	select PCI_PWRCTRL_PWRSEQ if HAVE_PWRCTRL
 	help
 	  This module adds support for PCIE bus
 

drivers/net/wireless/ath/ath12k/Kconfig

@@ -7,7 +7,7 @@ config ATH12K
 	select MHI_BUS
 	select QRTR
 	select QRTR_MHI
-	select PCI_PWRCTL_PWRSEQ if HAVE_PWRCTL
+	select PCI_PWRCTRL_PWRSEQ if HAVE_PWRCTRL
 	help
 	  Enable support for Qualcomm Technologies Wi-Fi 7 (IEEE
 	  802.11be) family of chipsets, for example WCN7850 and

drivers/pci/pwrctrl/Kconfig

@@ -1,23 +1,33 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-config HAVE_PWRCTL
+config HAVE_PWRCTRL
 	bool
 
-config PCI_PWRCTL
+config PCI_PWRCTRL
 	tristate
 
-config PCI_PWRCTL_PWRSEQ
+config PCI_PWRCTRL_PWRSEQ
 	tristate
 	select POWER_SEQUENCING
-	select PCI_PWRCTL
+	select PCI_PWRCTRL
 
-config PCI_PWRCTL_SLOT
+config PCI_PWRCTRL_SLOT
 	tristate "PCI Power Control driver for PCI slots"
-	select PCI_PWRCTL
+	select PCI_PWRCTRL
 	help
 	  Say Y here to enable the PCI Power Control driver to control the power
 	  state of PCI slots.
 
 	  This is a generic driver that controls the power state of different
 	  PCI slots. The voltage regulators powering the rails of the PCI slots
 	  are expected to be defined in the devicetree node of the PCI bridge.
+
+# deprecated
+config HAVE_PWRCTL
+	bool
+	select HAVE_PWRCTRL
+
+# deprecated
+config PCI_PWRCTL_PWRSEQ
+	tristate
+	select PCI_PWRCTRL_PWRSEQ

drivers/pci/pwrctrl/Makefile

@@ -1,9 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-obj-$(CONFIG_PCI_PWRCTL)		+= pci-pwrctrl-core.o
+obj-$(CONFIG_PCI_PWRCTRL)		+= pci-pwrctrl-core.o
 pci-pwrctrl-core-y			:= core.o
 
-obj-$(CONFIG_PCI_PWRCTL_PWRSEQ)		+= pci-pwrctrl-pwrseq.o
+obj-$(CONFIG_PCI_PWRCTRL_PWRSEQ)	+= pci-pwrctrl-pwrseq.o
 
-obj-$(CONFIG_PCI_PWRCTL_SLOT)		+= pci-pwrctl-slot.o
-pci-pwrctl-slot-y			:= slot.o
+obj-$(CONFIG_PCI_PWRCTRL_SLOT)		+= pci-pwrctrl-slot.o
+pci-pwrctrl-slot-y			:= slot.o

drivers/pci/pwrctrl/core.c

@@ -101,6 +101,8 @@ EXPORT_SYMBOL_GPL(pci_pwrctrl_device_set_ready);
  */
 void pci_pwrctrl_device_unset_ready(struct pci_pwrctrl *pwrctrl)
 {
+	cancel_work_sync(&pwrctrl->work);
+
 	/*
 	 * We don't have to delete the link here. Typically, this function
 	 * is only called when the power control device is being detached. If