From 81fe5bba88a3fbe34ee6c5d18e327c6aaacd588c Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Wed, 26 Dec 2018 20:46:27 +0100 Subject: [PATCH] parisc: Hide built-in serial aux port of Tosca GSP card Similar to commit bcf3f1752a62 ("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 --- drivers/parisc/lba_pci.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 69bd98421eb1..d376201bc6a0 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -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);