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| author | Maciej W. Rozycki <macro@orcam.me.uk> | 2025-10-21 20:38:29 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-10-22 11:06:24 -0500 |
| commit | 1d5d1663619d5a367be538f6a1be1cf5bd2cf494 (patch) | |
| tree | 4e3ae3c1718d52a2b57ae79201f3be2f129706bc /arch/mips | |
| parent | bf5570590a981d0659d0808d2d4bcda21b27a2a5 (diff) | |
| download | net-1d5d1663619d5a367be538f6a1be1cf5bd2cf494.tar.gz | |
MIPS: Malta: Fix PCI southbridge legacy resource reservations
Covering the PCI southbridge legacy port I/O range with a northbridge
resource reservation prevents MIPS Malta platform code from claiming its
standard legacy resources. This is because request_resource() calls
cause a clash with the previous reservation and consequently fail.
Change to using insert_resource() so as to prevent the clash, switching
the legacy reservations from:
00000000-00ffffff : MSC PCI I/O
00000020-00000021 : pic1
00000070-00000077 : rtc0
000000a0-000000a1 : pic2
[...]
to:
00000000-00ffffff : MSC PCI I/O
00000000-0000001f : dma1
00000020-00000021 : pic1
00000040-0000005f : timer
00000060-0000006f : keyboard
00000070-00000077 : rtc0
00000080-0000008f : dma page reg
000000a0-000000a1 : pic2
000000c0-000000df : dma2
[...]
Fixes: ae81aad5c2e1 ("MIPS: PCI: Use pci_enable_resources()")
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 # v6.18+
Link: https://patch.msgid.link/alpine.DEB.2.21.2510212001250.8377@angie.orcam.me.uk
Diffstat (limited to 'arch/mips')
| -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 2a3fd8bbf6c2c8..816570514c37db 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -213,7 +213,7 @@ void __init plat_mem_setup(void) /* Request I/O space for devices used on the Malta board. */ for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) - request_resource(&ioport_resource, standard_io_resources+i); + insert_resource(&ioport_resource, standard_io_resources + i); /* * Enable DMA channel 4 (cascade channel) in the PIIX4 south bridge. |