Commit-ID: f148b41e8b2e114d0aba023adf326b03368f3246
Gitweb: http://git.kernel.org/tip/f148b41e8b2e114d0aba023adf326b03368f3246
Author: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
AuthorDate: Sun, 11 Sep 2016 14:58:21 +0900
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 13 Sep 2016 20:42:58 +0200
x86: Clean up various simple wrapper functions
Remove unneeded variables and assignments.
While we are here, let's fix the following as well:
- Remove unnecessary parentheses
- Remove unnecessary unsigned-suffix 'U' from constant values
- Reword the comment in set_apic_id() (suggested by Thomas Gleixner)
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Cc: Alex Thorlton <athorlton@xxxxxxx>
Cc: Andrew Banman <abanman@xxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Daniel J Blueman <daniel@xxxxxxxxxxxxx>
Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Cc: Dimitri Sivanich <sivanich@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Cc: Mike Travis <travis@xxxxxxx>
Cc: Nathan Zimmer <nzimmer@xxxxxxx>
Cc: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steffen Persvold <sp@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Toshi Kani <toshi.kani@xxxxxxx>
Cc: Wei Jiangang <weijg.fnst@xxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1473573502-27954-1-git-send-email-yamada.masahiro@xxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/apic/apic_flat_64.c | 16 +++-------------
arch/x86/kernel/apic/apic_numachip.c | 5 +----
arch/x86/kernel/apic/x2apic_uv_x.c | 7 ++-----
arch/x86/mm/pat_rbtree.c | 4 +---
arch/x86/platform/uv/bios_uv.c | 7 ++-----
arch/x86/platform/uv/tlb_uv.c | 6 +-----
6 files changed, 10 insertions(+), 35 deletions(-)
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 5b2ae10..70796f5 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -116,27 +116,17 @@ static void flat_send_IPI_all(int vector)
static unsigned int flat_get_apic_id(unsigned long x)
{
- unsigned int id;
-
- id = (((x)>>24) & 0xFFu);
-
- return id;
+ return (x >> 24) & 0xFF;
}
static unsigned long set_apic_id(unsigned int id)
{
- unsigned long x;
-
- x = ((id & 0xFFu)<<24);
- return x;
+ return (id & 0xFF) << 24;
}
static unsigned int read_xapic_id(void)
{
- unsigned int id;
-
- id = flat_get_apic_id(apic_read(APIC_ID));
- return id;
+ return flat_get_apic_id(apic_read(APIC_ID));
}
static int flat_apic_id_registered(void)
diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c
index 714d4fd..e08fe2c 100644
--- a/arch/x86/kernel/apic/apic_numachip.c
+++ b/arch/x86/kernel/apic/apic_numachip.c
@@ -40,10 +40,7 @@ static unsigned int numachip1_get_apic_id(unsigned long x)
static unsigned long numachip1_set_apic_id(unsigned int id)
{
- unsigned long x;
-
- x = ((id & 0xffU) << 24);
- return x;
+ return (id & 0xff) << 24;
}
static unsigned int numachip2_get_apic_id(unsigned long x)
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index cb0673c..0f8cd92 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -533,11 +533,8 @@ static unsigned int x2apic_get_apic_id(unsigned long x)
static unsigned long set_apic_id(unsigned int id)
{
- unsigned long x;
-
- /* maskout x2apic_extra_bits ? */
- x = id;
- return x;
+ /* CHECKME: Do we need to mask out the xapic extra bits? */
+ return id;
}
static unsigned int uv_read_apic_id(void)
diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
index de391b7..159b52c 100644
--- a/arch/x86/mm/pat_rbtree.c
+++ b/arch/x86/mm/pat_rbtree.c
@@ -254,9 +254,7 @@ struct memtype *rbt_memtype_erase(u64 start, u64 end)
struct memtype *rbt_memtype_lookup(u64 addr)
{
- struct memtype *data;
- data = memtype_rb_lowest_match(&memtype_rbroot, addr, addr + PAGE_SIZE);
- return data;
+ return memtype_rb_lowest_match(&memtype_rbroot, addr, addr + PAGE_SIZE);
}
#if defined(CONFIG_DEBUG_FS)
diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c
index 23f2f3e..b4d5e95 100644
--- a/arch/x86/platform/uv/bios_uv.c
+++ b/arch/x86/platform/uv/bios_uv.c
@@ -149,11 +149,8 @@ EXPORT_SYMBOL_GPL(uv_bios_change_memprotect);
s64
uv_bios_reserved_page_pa(u64 buf, u64 *cookie, u64 *addr, u64 *len)
{
- s64 ret;
-
- ret = uv_bios_call_irqsave(UV_BIOS_GET_PARTITION_ADDR, (u64)cookie,
- (u64)addr, buf, (u64)len, 0);
- return ret;
+ return uv_bios_call_irqsave(UV_BIOS_GET_PARTITION_ADDR, (u64)cookie,
+ (u64)addr, buf, (u64)len, 0);
}
EXPORT_SYMBOL_GPL(uv_bios_reserved_page_pa);
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index fdb4d42..276e1b7 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -580,11 +580,7 @@ static int uv1_wait_completion(struct bau_desc *bau_desc,
*/
static unsigned long uv2_3_read_status(unsigned long offset, int rshft, int desc)
{
- unsigned long descriptor_status;
-
- descriptor_status =
- ((read_lmmr(offset) >> rshft) & UV_ACT_STATUS_MASK) << 1;
- return descriptor_status;
+ return ((read_lmmr(offset) >> rshft) & UV_ACT_STATUS_MASK) << 1;
}
/*
--
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