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| author | Vineet Gupta <vgupta@synopsys.com> | 2016-11-03 19:38:52 +0100 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2016-11-30 20:54:25 +0100 |
| commit | 2cd690ea6d6b345265f2de8c40e4a003ed802002 (patch) | |
| tree | 8bdb07ec0fd7a8cc482ea1d5a560443b121c5993 /arch/arc | |
| parent | ARC: mm: PAE40: Fix crash at munmap (diff) | |
| download | linux-2cd690ea6d6b345265f2de8c40e4a003ed802002.tar.xz linux-2cd690ea6d6b345265f2de8c40e4a003ed802002.zip | |
ARC: timer: gfrc, rtc: deuglify big endian code
A standard "C" shift will be handled appropriately by the compiler
depending on the endian for the build. So we don't need the
explicit distinction in code
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/kernel/time.c | 30 |
1 files changed, 8 insertions, 22 deletions
diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c index c10390d1ddb6..8d66bb446209 100644 --- a/arch/arc/kernel/time.c +++ b/arch/arc/kernel/time.c @@ -86,26 +86,19 @@ static int noinline arc_get_timer_clk(struct device_node *node) static cycle_t arc_read_gfrc(struct clocksource *cs) { unsigned long flags; - union { -#ifdef CONFIG_CPU_BIG_ENDIAN - struct { u32 h, l; }; -#else - struct { u32 l, h; }; -#endif - cycle_t full; - } stamp; + u32 l, h; local_irq_save(flags); __mcip_cmd(CMD_GFRC_READ_LO, 0); - stamp.l = read_aux_reg(ARC_REG_MCIP_READBACK); + l = read_aux_reg(ARC_REG_MCIP_READBACK); __mcip_cmd(CMD_GFRC_READ_HI, 0); - stamp.h = read_aux_reg(ARC_REG_MCIP_READBACK); + h = read_aux_reg(ARC_REG_MCIP_READBACK); local_irq_restore(flags); - return stamp.full; + return (((cycle_t)h) << 32) | l; } static struct clocksource arc_counter_gfrc = { @@ -143,14 +136,7 @@ CLOCKSOURCE_OF_DECLARE(arc_gfrc, "snps,archs-timer-gfrc", arc_cs_setup_gfrc); static cycle_t arc_read_rtc(struct clocksource *cs) { unsigned long status; - union { -#ifdef CONFIG_CPU_BIG_ENDIAN - struct { u32 high, low; }; -#else - struct { u32 low, high; }; -#endif - cycle_t full; - } stamp; + u32 l, h; /* * hardware has an internal state machine which tracks readout of @@ -159,12 +145,12 @@ static cycle_t arc_read_rtc(struct clocksource *cs) * - high increments after low has been read */ do { - stamp.low = read_aux_reg(AUX_RTC_LOW); - stamp.high = read_aux_reg(AUX_RTC_HIGH); + l = read_aux_reg(AUX_RTC_LOW); + h = read_aux_reg(AUX_RTC_HIGH); status = read_aux_reg(AUX_RTC_CTRL); } while (!(status & _BITUL(31))); - return stamp.full; + return (((cycle_t)h) << 32) | l; } static struct clocksource arc_counter_rtc = { |