Rong Zhang 32ec465103 MIPS: Loongson2ef: Use pcibios_align_resource() to block io range ... Loongson2ef reserves io range below 0x4000 (LOONGSON_PCI_IO_START) while ISA-mode only IDE controller on the south bridge still has a hard dependency on ISA IO ports. The reservation was done by lifting loongson_pci_io_resource.start onto 0x4000. Prior to commit ae81aad5c2 ("MIPS: PCI: Use pci_enable_resources()"), the arch specific pcibios_enable_resources() did not check if the resources were claimed, which diverges from what PCI core checks, effectively hiding the fact that IDE IO resources were not properly within the resource tree. After starting to use pcibios_enable_resources() from PCI core, enabling IDE controller fails: pata_cs5536 0000:00:0e.2: BAR 0 [io 0x01f0-0x01f7]: not claimed; can't enable device pata_cs5536 0000:00:0e.2: probe with driver pata_cs5536 failed with error -22 MIPS PCI code already has support for enforcing lower bounds using PCIBIOS_MIN_IO in pcibios_align_resource() without altering the IO window start address itself. Make Loongson2ef PCI code use PCIBIOS_MIN_IO too. Fixes: ae81aad5c2 ("MIPS: PCI: Use pci_enable_resources()") Cc: stable@vger.kernel.org Tested-by: Beiyan Yun <root@infi.wang> Tested-by: Yao Zi <me@ziyao.cc> Signed-off-by: Rong Zhang <rongrong@oss.cipunited.com> Acked-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>		2026-02-05 10:00:37 +01:00
..
cs5536	MIPS: loongson2ef: Add missing break in cs5536_isa	2023-04-12 15:12:24 +02:00
bonito-irq.c	MIPS: Replace setup_irq() by request_irq()	2020-03-05 16:47:35 +01:00
env.c	MIPS: Loongson{2ef, 32, 64} convert to generic fw cmdline	2019-11-11 10:44:56 -08:00
init.c	MIPS: init: move externs to header file	2021-01-07 17:12:51 +01:00
irq.c
machtype.c	MIPS: Loongson2ef: Replace deprecated strncpy() with strscpy()	2025-02-27 10:40:01 +01:00
Makefile	MIPS: loongson2ef: don't build serial.o unconditionally	2021-08-05 10:58:21 +02:00
mem.c	MIPS: loongson2ef: remove function __uncached_access()	2021-01-27 21:51:15 +01:00
pci.c	MIPS: Loongson2ef: Use pcibios_align_resource() to block io range	2026-02-05 10:00:37 +01:00
platform.c	MIPS: Fix typos	2024-01-08 10:39:12 +01:00
pm.c	MIPS: Loongson2ef: drop pointless static qualifier in loongson_suspend_enter()	2020-01-09 09:57:07 -08:00
reset.c	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
rtc.c
serial.c
setup.c	MIPS: Loongson2ef: Register PCI controller in early stage	2026-02-05 10:00:37 +01:00
time.c
uart_base.c	MIPS: Loongson2ef: Convert to early_printk_8250	2019-11-11 10:45:00 -08:00