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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-01-15 07:22:35 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-01-15 07:22:35 +0400 |
| commit | fac515db45207718168cb55ca4d0a390e43b61af (patch) | |
| tree | 7dd2fe9b94f769a2009ff6c7402c52ef3dd3b640 /arch/powerpc/sysdev/mpic_timer.c | |
| parent | 3ac8ff1c475bda7174fce63230c0932454287cd5 (diff) | |
| parent | d064f30e5063ec54ab50af08c64fb5055e759bfd (diff) | |
| download | linux-fac515db45207718168cb55ca4d0a390e43b61af.tar.xz | |
Merge remote-tracking branch 'scott/next' into next
Freescale updates from Scott:
<<
Highlights include 32-bit booke relocatable support, e6500 hardware
tablewalk support, various e500 SPE fixes, some new/revived boards, and
e6500 deeper idle and altivec powerdown modes.
>>
Diffstat (limited to 'arch/powerpc/sysdev/mpic_timer.c')
| -rw-r--r-- | arch/powerpc/sysdev/mpic_timer.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/mpic_timer.c b/arch/powerpc/sysdev/mpic_timer.c index 22d7d57eead9..9d9b06217f8b 100644 --- a/arch/powerpc/sysdev/mpic_timer.c +++ b/arch/powerpc/sysdev/mpic_timer.c @@ -41,6 +41,7 @@ #define MPIC_TIMER_TCR_ROVR_OFFSET 24 #define TIMER_STOP 0x80000000 +#define GTCCR_TOG 0x80000000 #define TIMERS_PER_GROUP 4 #define MAX_TICKS (~0U >> 1) #define MAX_TICKS_CASCADE (~0U) @@ -96,8 +97,11 @@ static void convert_ticks_to_time(struct timer_group_priv *priv, time->tv_sec = (__kernel_time_t)div_u64(ticks, priv->timerfreq); tmp_sec = (u64)time->tv_sec * (u64)priv->timerfreq; - time->tv_usec = (__kernel_suseconds_t) - div_u64((ticks - tmp_sec) * 1000000, priv->timerfreq); + time->tv_usec = 0; + + if (tmp_sec <= ticks) + time->tv_usec = (__kernel_suseconds_t) + div_u64((ticks - tmp_sec) * 1000000, priv->timerfreq); return; } @@ -327,11 +331,13 @@ void mpic_get_remain_time(struct mpic_timer *handle, struct timeval *time) casc_priv = priv->timer[handle->num].cascade_handle; if (casc_priv) { tmp_ticks = in_be32(&priv->regs[handle->num].gtccr); + tmp_ticks &= ~GTCCR_TOG; ticks = ((u64)tmp_ticks & UINT_MAX) * (u64)MAX_TICKS_CASCADE; tmp_ticks = in_be32(&priv->regs[handle->num - 1].gtccr); ticks += tmp_ticks; } else { ticks = in_be32(&priv->regs[handle->num].gtccr); + ticks &= ~GTCCR_TOG; } convert_ticks_to_time(priv, ticks, time); |