Commit 81fe5bba authored Dec 26, 2018 by Helge Deller

parisc: Hide built-in serial aux port of Tosca GSP card

Similar to commit bcf3f175 ("parisc: Hide Diva-built-in serial aux and
graphics card") it's better to hide the built-in serial AUX port at bootup.
When not hiding the port, the Linux serial driver will try to manage this port
and fails on a A500 server like this:

serial 0000:00:05.0: enabling device (0000 -> 0003)
serial 0000:00:05.0: enabling SERR and PARITY (0003 -> 0143)
0000:00:05.0: ttyS3 at MMIO 0xfffffffff8005000 (irq = 71, base_baud = 115200) is a 16550A
serial 0000:00:05.0: Couldn't register serial port 0, irq 71, type 2, error -28

Signed-off-by: Helge Deller <deller@gmx.de>

parent a3b22b9f

drivers/parisc/lba_pci.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -1743,3 +1743,15 @@ static void quirk_diva_aux_disable(struct pci_dev *dev)
		}
		DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA_AUX,
		quirk_diva_aux_disable);

		static void quirk_tosca_aux_disable(struct pci_dev *dev)
		{
		if (dev->subsystem_vendor != PCI_VENDOR_ID_HP \|\|
		dev->subsystem_device != 0x104a)
		return;

		dev_info(&dev->dev, "Hiding Tosca secondary built-in AUX serial device");
		dev->device = 0;
		}
		DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA,
		quirk_tosca_aux_disable);

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