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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2025-01-14 18:11:58 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-17 11:36:32 +0100 |
| commit | f7347511ed6ef04d6b2efb73c9dc4e89df4e70a5 (patch) | |
| tree | 58a9666d466fcf3320de7871cbf25e114aa5226c /arch/mips/pci/pci-legacy.c | |
| parent | af55b076168339b9030874dcc10675532ccaffe8 (diff) | |
| download | linux-f7347511ed6ef04d6b2efb73c9dc4e89df4e70a5.tar.gz linux-f7347511ed6ef04d6b2efb73c9dc4e89df4e70a5.tar.bz2 linux-f7347511ed6ef04d6b2efb73c9dc4e89df4e70a5.zip | |
MIPS: pci-legacy: Override pci_address_to_pio
commit df1b8d6e89db0edd572a1e375f5d3dd5575b9a9b upstream.
pci-legacy systems are not using logic_pio to managed PIO
allocations, thus the generic pci_address_to_pio won't work
when PCI_IOBASE is defined.
Override the function to use architecture implementation to
fix the problem.
Cc: stable@vger.kernel.org
Fixes: 4bfb53e7d317 ("mips: add <asm-generic/io.h> including")
Reported-by: Mateusz Jończyk <mat.jonczyk@o2.pl>
Closes: https://lore.kernel.org/r/99f75c66-4c2d-45dc-a808-b5ba440c7551@app.fastmail.com/
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/mips/pci/pci-legacy.c')
| -rw-r--r-- | arch/mips/pci/pci-legacy.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c index ec2567f8efd8..66898fd182dc 100644 --- a/arch/mips/pci/pci-legacy.c +++ b/arch/mips/pci/pci-legacy.c @@ -29,6 +29,14 @@ static LIST_HEAD(controllers); static int pci_initialized; +unsigned long pci_address_to_pio(phys_addr_t address) +{ + if (address > IO_SPACE_LIMIT) + return (unsigned long)-1; + + return (unsigned long) address; +} + /* * We need to avoid collisions with `mirrored' VGA ports * and other strange ISA hardware, so we always want the |