torvalds/linux
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Code
5c3485bb12
linux/arch/sh/boards/mach-landisk
History
Geert Uytterhoeven 0c64a0dce5 sh: landisk: Add missing initialization of sh_io_port_base 
The Landisk setup code maps the CF IDE area using ioremap_prot(), and
passes the resulting virtual addresses to the pata_platform driver,
disguising them as I/O port addresses.  Hence the pata_platform driver
translates them again using ioport_map().
As CONFIG_GENERIC_IOMAP=n, and CONFIG_HAS_IOPORT_MAP=y, the
SuperH-specific mapping code in arch/sh/kernel/ioport.c translates
I/O port addresses to virtual addresses by adding sh_io_port_base, which
defaults to -1, thus breaking the assumption of an identity mapping.

Fix this by setting sh_io_port_base to zero.

Fixes: 37b7a97884 ("sh: machvec IO death.")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14 22:43:17 -04:00
..
gio.c sh: boards: convert to SPDX identifiers 2018-12-28 12:11:44 -08:00
irq.c sh: boards: convert to SPDX identifiers 2018-12-28 12:11:44 -08:00
Makefile sh: boards: convert to SPDX identifiers 2018-12-28 12:11:44 -08:00
psw.c sh: boards: convert to SPDX identifiers 2018-12-28 12:11:44 -08:00
setup.c sh: landisk: Add missing initialization of sh_io_port_base 2020-08-14 22:43:17 -04:00