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| author | Maciej W. Rozycki <macro@orcam.me.uk> | 2025-10-21 20:38:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-29 13:59:59 +0100 |
| commit | d7fb245842b12cc12fd1cc44565edc49947dd546 (patch) | |
| tree | bd78db7cedaa1c1d15d305611798d433afd7a241 /arch | |
| parent | 5568efa5bd153b32852513e6049fe75d2cb08e09 (diff) | |
| download | linux-d7fb245842b12cc12fd1cc44565edc49947dd546.tar.gz linux-d7fb245842b12cc12fd1cc44565edc49947dd546.tar.bz2 linux-d7fb245842b12cc12fd1cc44565edc49947dd546.zip | |
MIPS: Malta: Fix keyboard resource preventing i8042 driver from registering
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.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/mti-malta/malta-setup.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index c4ad5a9b4bc1..ba6a3d4c1050 100644 --- 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_resources[] = { .name = "keyboard", .start = 0x60, .end = 0x6f, - .flags = IORESOURCE_IO | IORESOURCE_BUSY + .flags = IORESOURCE_IO }, { .name = "dma page reg", |