5.4-stable review patch. If anyone has any objections, please let me know.
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From: Maciej W. Rozycki macro@orcam.me.uk
commit bf5570590a981d0659d0808d2d4bcda21b27a2a5 upstream.
MIPS Malta platform code registers the PCI southbridge legacy port I/O PS/2 keyboard range as a standard resource marked as busy. It prevents the i8042 driver from registering as it fails to claim the resource in a call to i8042_platform_init(). Consequently PS/2 keyboard and mouse devices cannot be used with this platform.
Fix the issue by removing the busy marker from the standard reservation, making the driver register successfully:
serio: i8042 KBD port at 0x60,0x64 irq 1 serio: i8042 AUX port at 0x60,0x64 irq 12
and the resource show up as expected among the legacy devices:
00000000-00ffffff : MSC PCI I/O 00000000-0000001f : dma1 00000020-00000021 : pic1 00000040-0000005f : timer 00000060-0000006f : keyboard 00000060-0000006f : i8042 00000070-00000077 : rtc0 00000080-0000008f : dma page reg 000000a0-000000a1 : pic2 000000c0-000000df : dma2 [...]
If the i8042 driver has not been configured, then the standard resource will remain there preventing any conflicting dynamic assignment of this PCI port I/O address range.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Maciej W. Rozycki macro@orcam.me.uk Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Acked-by: Thomas Bogendoerfer tsbogend@alpha.franken.de Cc: stable@vger.kernel.org Link: https://patch.msgid.link/alpine.DEB.2.21.2510211919240.8377@angie.orcam.me.u... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/mips/mti-malta/malta-setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -48,7 +48,7 @@ static struct resource standard_io_resou .name = "keyboard", .start = 0x60, .end = 0x6f, - .flags = IORESOURCE_IO | IORESOURCE_BUSY + .flags = IORESOURCE_IO }, { .name = "dma page reg",