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firmware: dmi-sysfs: handle HAS_IOPORT=n

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In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to guard sections of code calling them
as alternative access methods.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20230522105049.1467313-11-schnelle@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Niklas Schnelle 2023-05-22 12:50:15 +02:00 committed by Greg Kroah-Hartman
parent 67d91a1e31
commit e7f3dd801e
1 changed files with 4 additions and 0 deletions
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4
drivers/firmware/dmi-sysfs.c
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@ -310,6 +310,7 @@ static const struct kobj_type dmi_system_event_log_ktype = {
.default_groups = dmi_sysfs_sel_groups,
};
#ifdef CONFIG_HAS_IOPORT
typedef u8 (*sel_io_reader)(const struct dmi_system_event_log *sel,
loff_t offset);
@ -374,6 +375,7 @@ static ssize_t dmi_sel_raw_read_io(struct dmi_sysfs_entry *entry,
return wrote;
}
#endif
static ssize_t dmi_sel_raw_read_phys32(struct dmi_sysfs_entry *entry,
const struct dmi_system_event_log *sel,
@ -409,11 +411,13 @@ static ssize_t dmi_sel_raw_read_helper(struct dmi_sysfs_entry *entry,
memcpy(&sel, dh, sizeof(sel));
switch (sel.access_method) {
#ifdef CONFIG_HAS_IOPORT
case DMI_SEL_ACCESS_METHOD_IO8:
case DMI_SEL_ACCESS_METHOD_IO2x8:
case DMI_SEL_ACCESS_METHOD_IO16:
return dmi_sel_raw_read_io(entry, &sel, state->buf,
state->pos, state->count);
#endif
case DMI_SEL_ACCESS_METHOD_PHYS32:
return dmi_sel_raw_read_phys32(entry, &sel, state->buf,
state->pos, state->count);