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Arnd Bergmann d9a5d5c493 vgacon: rework screen_info #ifdef checks 
[ Upstream commit 8a736ddfc861b2a217c935c2f461a8004add8247 ]

On non-x86 architectures, the screen_info variable is generally only
used for the VGA console where supported, and in some cases the EFI
framebuffer or vga16fb.

Now that we have a definite list of which architectures actually use it
for what, use consistent #ifdef checks so the global variable is only
defined when it is actually used on those architectures.

Loongarch and riscv have no support for vgacon or vga16fb, but
they support EFI firmware, so only that needs to be checked, and the
initialization can be removed because that is handled by EFI.
IA64 has both vgacon and EFI, though EFI apparently never uses
a framebuffer here.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Khalid Aziz <khalid@gonehiking.org>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20231009211845.3136536-3-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: beb2800074c1 ("LoongArch: Fix entry point in kernel image header")
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-06-27 13:49:15 +02:00
..
syscalls arch: Register fchmodat2, usually as syscall 452 2023-07-27 12:25:35 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile kbuild: remove --include-dir MAKEFLAG from top Makefile 2023-02-05 18:51:22 +09:00
Makefile.gate ia64: require -Wl,--hash-style=sysv 2019-05-18 11:29:01 +09:00
acpi-ext.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
acpi.c acpi: Provide ia64 dummy implementation of acpi_proc_quirk_mwait_check() 2023-09-11 08:13:17 +00:00
asm-offsets.c ia64: do not typedef struct pal_min_state_area_s 2021-02-12 05:11:19 +09:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
brl_emu.c signal: Remove the task parameter from force_sig_fault 2019-05-29 09:31:43 -05:00
crash.c ia64: simplify one-level sysctl registration for kdump_ctl_table 2023-04-13 11:49:35 -07:00
crash_dump.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
cyclone.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
dma-mapping.c dma-mapping: split <linux/dma-mapping.h> 2020-10-06 07:07:03 +02:00
efi.c docs: move ia64 architecture docs under Documentation/arch/ 2023-04-10 16:45:52 -06:00
efi_stub.S mm: update legacy flush_tlb_* to use vma 2021-06-29 10:53:52 -07:00
elfcore.c elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size} 2023-01-05 15:12:12 +00:00
entry.S ia64: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-22 18:12:46 +09:00
entry.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_inject.c ia64: fix format strings for err_inject 2021-03-25 09:22:55 -07:00
esi.c efi/ia64: Use existing helpers to locate ESI table 2020-02-23 21:59:42 +01:00
esi_stub.S ia64: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-22 18:12:46 +09:00
fsys.S docs: move ia64 architecture docs under Documentation/arch/ 2023-04-10 16:45:52 -06:00
fsyscall_gtod_data.h Stop ia64 being the last holdout using GENERIC_TIME_VSYSCALL_OLD 2017-11-13 12:15:40 -08:00
ftrace.c ftrace: Cleanup ftrace_dyn_arch_init() 2021-10-08 19:41:39 -04:00
gate-data.S
…
gate.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gate.lds.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
head.S ia64: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-22 18:12:46 +09:00
iosapic.c genirq: Add and use an irq_data_update_affinity helper 2022-07-07 09:38:04 +01:00
irq.c genirq: Add and use an irq_data_update_affinity helper 2022-07-07 09:38:04 +01:00
irq.h ia64: replace setup_irq() by request_irq() 2020-03-13 15:21:28 -07:00
irq_ia64.c ia64: Remove perfmon 2020-09-11 09:34:32 -07:00
irq_lsapic.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ivt.S ia64: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-22 18:12:46 +09:00
kprobes.c ia64: replace comments with C99 initializers 2022-04-28 23:17:25 -07:00
machine_kexec.c ia64: drop marked broken DISCONTIGMEM and VIRTUAL_MEM_MAP 2021-04-30 11:20:35 -07:00
mca.c kill do_each_thread() 2023-08-21 13:46:25 -07:00
mca_asm.S mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
mca_drv.c exit: Add and use make_task_dead. 2021-12-13 12:04:45 -06:00
mca_drv.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mca_drv_asm.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
minstate.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
module.c module: replace module_layout with module_memory 2023-03-09 12:55:15 -08:00
msi_ia64.c genirq: Add and use an irq_data_update_affinity helper 2022-07-07 09:38:04 +01:00
numa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pal.S ia64: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-22 18:12:46 +09:00
palinfo.c ia64: fix typos in comments 2022-04-28 23:17:25 -07:00
patch.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci-dma.c ia64 for v5.4 - big change here is removal of support for SGI Altix 2019-09-16 15:32:01 -07:00
perfmon_itanium.h arch: ia64: Remove rest of perfmon support 2021-01-22 12:12:20 +05:30
process.c sched/idle: Mark arch_cpu_idle_dead() __noreturn 2023-03-08 08:44:28 -08:00
ptrace.c ia64: ptrace: user_regset_copyin_ignore() always returns 0 2022-11-15 14:30:40 -08:00
relocate_kernel.S mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
sal.c locking, arch/ia64: Reduce <asm/smp.h> header dependencies by moving XTP bits into the new <asm/xtp.h> header 2020-08-06 16:13:13 +02:00
salinfo.c ia64: salinfo: placate defined-but-not-used warning 2023-04-08 13:45:36 -07:00
setup.c vgacon: rework screen_info #ifdef checks 2024-06-27 13:49:15 +02:00
sigframe.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
signal.c resume_user_mode: Move to resume_user_mode.h 2022-03-10 16:51:50 -06:00
smp.c treewide: Trace IPIs sent via smp_send_reschedule() 2023-03-24 11:01:28 +01:00
smpboot.c ia64: cleanup remove_siblinginfo() 2022-06-03 06:52:58 -07:00
stacktrace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sys_ia64.c ia64: mmap: Consider pgoff when searching for free mapping 2023-07-21 09:41:35 -06:00
time.c sched/cputime: Fix IA64 build error of missing arch_vtime_task_switch() prototype 2023-01-11 10:31:57 +01:00
topology.c cpu-hotplug: Provide prototypes for arch CPU registration 2023-10-11 14:27:37 +02:00
traps.c ia64: fix typos in comments 2022-04-28 23:17:25 -07:00
unaligned.c ia64: remove CONFIG_SET_FS support 2022-02-25 09:36:06 +01:00
uncached.c mm: use for_each_online_node and node_online instead of open coding 2022-04-29 14:36:58 -07:00
unwind.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
unwind_decoder.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unwind_i.h ia64: kernel: unwind_i.h: Replace zero-length array with flexible-array 2020-06-15 23:08:31 -05:00
vmlinux.lds.S objtool/idle: Validate __cpuidle code as noinstr 2023-01-13 11:48:15 +01:00