do_gettimeofday() is deprecated and a bit clumsy. This changes radeon_probe_pll_params() over to using ktime_get() with monotonic times. There is no need to check for negative values any more since the monotonic clocksource cannot go backwards, but I'm adding a check for zero-division in case of a bad clocksource.
Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/video/fbdev/aty/radeon_base.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c index 8ad1643e7d1c..8b7048fbf6dc 100644 --- a/drivers/video/fbdev/aty/radeon_base.c +++ b/drivers/video/fbdev/aty/radeon_base.c @@ -583,8 +583,8 @@ static int radeon_probe_pll_params(struct radeonfb_info *rinfo) int hTotal, vTotal, num, denom, m, n; unsigned long long hz, vclk; long xtal; - struct timeval start_tv, stop_tv; - long total_secs, total_usecs; + ktime_t start_time, stop_time; + u64 total_usecs; int i;
/* Ugh, we cut interrupts, bad bad bad, but we want some precision @@ -600,7 +600,7 @@ static int radeon_probe_pll_params(struct radeonfb_info *rinfo) if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) == 0) break;
- do_gettimeofday(&start_tv); + start_time = ktime_get();
for(i=0; i<1000000; i++) if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) != 0) @@ -610,18 +610,14 @@ static int radeon_probe_pll_params(struct radeonfb_info *rinfo) if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) == 0) break; - do_gettimeofday(&stop_tv); + stop_time = ktime_get(); local_irq_enable();
- total_secs = stop_tv.tv_sec - start_tv.tv_sec; - if (total_secs > 10) + total_usecs = ktime_us_delta(stop_time, start_time); + if (total_usecs >= 10 * USEC_PER_SEC || total_usecs == 0) return -1; - total_usecs = stop_tv.tv_usec - start_tv.tv_usec; - total_usecs += total_secs * 1000000; - if (total_usecs < 0) - total_usecs = -total_usecs; - hz = 1000000/total_usecs; + hz = USEC_PER_SEC/(u32)total_usecs;
hTotal = ((INREG(CRTC_H_TOTAL_DISP) & 0x1ff) + 1) * 8; vTotal = ((INREG(CRTC_V_TOTAL_DISP) & 0x3ff) + 1);