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author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-09-11 05:58:21 (GMT) |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-09-13 18:42:58 (GMT) |
commit | f148b41e8b2e114d0aba023adf326b03368f3246 (patch) | |
tree | 9da09d3164c086fee4ea8321f74a8b5487686c32 /arch | |
parent | e8988e0550b040265b8cdab82c553b5d6be627fb (diff) | |
download | linux-f148b41e8b2e114d0aba023adf326b03368f3246.tar.xz |
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@socionext.com>
Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andrew Banman <abanman@sgi.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Daniel J Blueman <daniel@numascale.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Mike Travis <travis@sgi.com>
Cc: Nathan Zimmer <nzimmer@sgi.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steffen Persvold <sp@numascale.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Wei Jiangang <weijg.fnst@cn.fujitsu.com>
Link: http://lkml.kernel.org/r/1473573502-27954-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/apic/apic_flat_64.c | 16 | ||||
-rw-r--r-- | arch/x86/kernel/apic/apic_numachip.c | 5 | ||||
-rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 7 | ||||
-rw-r--r-- | arch/x86/mm/pat_rbtree.c | 4 | ||||
-rw-r--r-- | arch/x86/platform/uv/bios_uv.c | 7 | ||||
-rw-r--r-- | 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; } /* |