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-rw-r--r--arch/alpha/include/asm/bitops.h20
-rw-r--r--arch/alpha/include/asm/local.h33
-rw-r--r--arch/alpha/kernel/asm-offsets.c2
-rw-r--r--arch/alpha/kernel/proto.h2
-rw-r--r--arch/alpha/kernel/setup.c8
-rw-r--r--arch/alpha/kernel/sys_miata.c17
-rw-r--r--arch/alpha/kernel/sys_sio.c8
-rw-r--r--arch/alpha/kernel/syscalls/syscall.tbl6
8 files changed, 62 insertions, 34 deletions
diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h
index bafb1c1f0f..3e33621922 100644
--- a/arch/alpha/include/asm/bitops.h
+++ b/arch/alpha/include/asm/bitops.h
@@ -286,6 +286,26 @@ arch___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
#define arch_test_bit generic_test_bit
#define arch_test_bit_acquire generic_test_bit_acquire
+static inline bool xor_unlock_is_negative_byte(unsigned long mask,
+ volatile unsigned long *p)
+{
+ unsigned long temp, old;
+
+ __asm__ __volatile__(
+ "1: ldl_l %0,%4\n"
+ " mov %0,%2\n"
+ " xor %0,%3,%0\n"
+ " stl_c %0,%1\n"
+ " beq %0,2f\n"
+ ".subsection 2\n"
+ "2: br 1b\n"
+ ".previous"
+ :"=&r" (temp), "=m" (*p), "=&r" (old)
+ :"Ir" (mask), "m" (*p));
+
+ return (old & BIT(7)) != 0;
+}
+
/*
* ffz = Find First Zero in word. Undefined if no zero exists,
* so code should check against ~0UL first..
diff --git a/arch/alpha/include/asm/local.h b/arch/alpha/include/asm/local.h
index 0fcaad642c..88eb398947 100644
--- a/arch/alpha/include/asm/local.h
+++ b/arch/alpha/include/asm/local.h
@@ -65,28 +65,27 @@ static __inline__ bool local_try_cmpxchg(local_t *l, long *old, long new)
#define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n)))
/**
- * local_add_unless - add unless the number is a given value
+ * local_add_unless - add unless the number is already a given value
* @l: pointer of type local_t
* @a: the amount to add to l...
* @u: ...unless l is equal to u.
*
- * Atomically adds @a to @l, so long as it was not @u.
- * Returns non-zero if @l was not @u, and zero otherwise.
+ * Atomically adds @a to @l, if @v was not already @u.
+ * Returns true if the addition was done.
*/
-#define local_add_unless(l, a, u) \
-({ \
- long c, old; \
- c = local_read(l); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = local_cmpxchg((l), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ bool
+local_add_unless(local_t *l, long a, long u)
+{
+ long c = local_read(l);
+
+ do {
+ if (unlikely(c == u))
+ return false;
+ } while (!local_try_cmpxchg(l, &c, c + a));
+
+ return true;
+}
+
#define local_inc_not_zero(l) local_add_unless((l), 1, 0)
#define local_add_negative(a, l) (local_add_return((a), (l)) < 0)
diff --git a/arch/alpha/kernel/asm-offsets.c b/arch/alpha/kernel/asm-offsets.c
index b121294bee..bf1eedd27c 100644
--- a/arch/alpha/kernel/asm-offsets.c
+++ b/arch/alpha/kernel/asm-offsets.c
@@ -12,7 +12,7 @@
#include <linux/kbuild.h>
#include <asm/io.h>
-void foo(void)
+static void __used foo(void)
{
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h
index 5816a31c1b..2c89c1c557 100644
--- a/arch/alpha/kernel/proto.h
+++ b/arch/alpha/kernel/proto.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/interrupt.h>
+#include <linux/screen_info.h>
#include <linux/io.h>
/* Prototypes of functions used across modules here in this directory. */
@@ -113,6 +114,7 @@ extern int boot_cpuid;
#ifdef CONFIG_VERBOSE_MCHECK
extern unsigned long alpha_verbose_mcheck;
#endif
+extern struct screen_info vgacon_screen_info;
/* srmcons.c */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index c80258ec33..0738f9396f 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -131,13 +131,14 @@ static void determine_cpu_caches (unsigned int);
static char __initdata command_line[COMMAND_LINE_SIZE];
+#ifdef CONFIG_VGA_CONSOLE
/*
* The format of "screen_info" is strange, and due to early
* i386-setup code. This is just enough to make the console
* code think we're on a VGA color display.
*/
-struct screen_info screen_info = {
+struct screen_info vgacon_screen_info = {
.orig_x = 0,
.orig_y = 25,
.orig_video_cols = 80,
@@ -145,8 +146,7 @@ struct screen_info screen_info = {
.orig_video_isVGA = 1,
.orig_video_points = 16
};
-
-EXPORT_SYMBOL(screen_info);
+#endif
/*
* The direct map I/O window, if any. This should be the same
@@ -652,7 +652,7 @@ setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
+ vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
diff --git a/arch/alpha/kernel/sys_miata.c b/arch/alpha/kernel/sys_miata.c
index e1bee8f84c..33b2798de8 100644
--- a/arch/alpha/kernel/sys_miata.c
+++ b/arch/alpha/kernel/sys_miata.c
@@ -183,16 +183,17 @@ miata_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
the 2nd 8259 controller. So we have to check for it first. */
if((slot == 7) && (PCI_FUNC(dev->devfn) == 3)) {
- u8 irq=0;
struct pci_dev *pdev = pci_get_slot(dev->bus, dev->devfn & ~7);
- if(pdev == NULL || pci_read_config_byte(pdev, 0x40,&irq) != PCIBIOS_SUCCESSFUL) {
- pci_dev_put(pdev);
+ u8 irq = 0;
+ int ret;
+
+ if (!pdev)
return -1;
- }
- else {
- pci_dev_put(pdev);
- return irq;
- }
+
+ ret = pci_read_config_byte(pdev, 0x40, &irq);
+ pci_dev_put(pdev);
+
+ return ret == PCIBIOS_SUCCESSFUL ? irq : -1;
}
return COMMON_TABLE_LOOKUP;
diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
index 7c420d8dac..086488ed83 100644
--- a/arch/alpha/kernel/sys_sio.c
+++ b/arch/alpha/kernel/sys_sio.c
@@ -57,11 +57,13 @@ sio_init_irq(void)
static inline void __init
alphabook1_init_arch(void)
{
+#ifdef CONFIG_VGA_CONSOLE
/* The AlphaBook1 has LCD video fixed at 800x600,
37 rows and 100 cols. */
- screen_info.orig_y = 37;
- screen_info.orig_video_cols = 100;
- screen_info.orig_video_lines = 37;
+ vgacon_screen_info.orig_y = 37;
+ vgacon_screen_info.orig_video_cols = 100;
+ vgacon_screen_info.orig_video_lines = 37;
+#endif
lca_init_arch();
}
diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index ad37569d05..18c842ca6c 100644
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -334,7 +334,7 @@
401 common io_submit sys_io_submit
402 common io_cancel sys_io_cancel
405 common exit_group sys_exit_group
-406 common lookup_dcookie sys_lookup_dcookie
+406 common lookup_dcookie sys_ni_syscall
407 common epoll_create sys_epoll_create
408 common epoll_ctl sys_epoll_ctl
409 common epoll_wait sys_epoll_wait
@@ -492,3 +492,7 @@
560 common set_mempolicy_home_node sys_ni_syscall
561 common cachestat sys_cachestat
562 common fchmodat2 sys_fchmodat2
+563 common map_shadow_stack sys_map_shadow_stack
+564 common futex_wake sys_futex_wake
+565 common futex_wait sys_futex_wait
+566 common futex_requeue sys_futex_requeue