diff options
| author | Niklas Schnelle <schnelle@linux.ibm.com> | 2023-09-11 14:56:53 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-02 16:19:13 +0200 |
| commit | 358ad297e379ff548247e3e24c6619559942bfdd (patch) | |
| tree | 8c809dfcd2b1d56a2ab8fe39511e9c2047a36ecd | |
| parent | 52e24f8c0a102ac76649c6b71224fadcc82bd5da (diff) | |
usb: pci-quirks: handle HAS_IOPORT dependency for UHCI handoff
In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. With the AMD quirk handled USB PCI quirks still use
inw() in uhci_check_and_reset_hc() and thus indirectly in
quirk_usb_handoff_uhci(). Handle this by conditionally compiling
uhci_check_and_reset_hc() and stubbing out quirk_usb_handoff_uhci() when
HAS_IOPORT is not available.
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20230911125653.1393895-4-schnelle@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 10813096d00c..1f9c1b1435d8 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -634,6 +634,16 @@ void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev) } EXPORT_SYMBOL_GPL(usb_asmedia_modifyflowcontrol); +static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask) +{ + u16 cmd; + + return !pci_read_config_word(pdev, PCI_COMMAND, &cmd) && (cmd & mask); +} + +#define mmio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_MEMORY) + +#if defined(CONFIG_HAS_IOPORT) && IS_ENABLED(CONFIG_USB_UHCI_HCD) /* * Make sure the controller is completely inactive, unable to * generate interrupts or do DMA. @@ -715,14 +725,7 @@ reset_needed: } EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc); -static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask) -{ - u16 cmd; - return !pci_read_config_word(pdev, PCI_COMMAND, &cmd) && (cmd & mask); -} - #define pio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_IO) -#define mmio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_MEMORY) static void quirk_usb_handoff_uhci(struct pci_dev *pdev) { @@ -742,6 +745,12 @@ static void quirk_usb_handoff_uhci(struct pci_dev *pdev) uhci_check_and_reset_hc(pdev, base); } +#else /* defined(CONFIG_HAS_IOPORT && IS_ENABLED(CONFIG_USB_UHCI_HCD) */ + +static void quirk_usb_handoff_uhci(struct pci_dev *pdev) {} + +#endif /* defined(CONFIG_HAS_IOPORT && IS_ENABLED(CONFIG_USB_UHCI_HCD) */ + static int mmio_resource_enabled(struct pci_dev *pdev, int idx) { return pci_resource_start(pdev, idx) && mmio_enabled(pdev); |