From 452b13248fe8499b2d9a487999d3610095aecca5 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 21 Jul 2015 08:01:14 +0530 Subject: [PATCH] clocksource/drivers/sh_tmu: Fix traceback spotted in -next Traceback in -next due to commit 'clockevents/drivers/sh_tmu: Migrate to new 'set-state' interface'. Commit ("clockevents/drivers/sh_tmu: Migrate to new 'set-state' interface") in -next causes the following traceback. This is seen with qemu runs for the sh target. ------------[ cut here ]------------ WARNING: at drivers/clocksource/sh_tmu.c:202 Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 4.2.0-rc3-next-20150720 #1 task: 8c411ed8 ti: 8c40e000 task.ti: 8c40e000 PC is at sh_tmu_disable+0x40/0x60 PR is at sh_tmu_clock_event_shutdown+0x8/0x20 PC : 8c271220 SP : 8c40ff10 SR : 400081f1 TEA : 00000000 R0 : 8c271240 R1 : 8fc08cfc R2 : 00000000 R3 : 3fffffff R4 : 8fc08c00 R5 : 00000001 R6 : 00000002 R7 : ffffffff R8 : 00000001 R9 : 8fc08c20 R10 : 00000000 R11 : 00000000 R12 : 8c012820 R13 : 00000000 R14 : 00000000 MACH: 3b9ac9ff MACL: 80000000 GBR : 00000000 PR : 8c271248 Call trace: [<8c065836>] clockevents_switch_state+0x16/0x60 [<8c06588c>] clockevents_shutdown+0xc/0x40 [<8c066330>] tick_check_new_device+0x90/0xc0 [<8c065556>] clockevents_register_device+0x56/0x120 [<8c0662a0>] tick_check_new_device+0x0/0xc0 [<8c27167a>] sh_tmu_probe+0x29a/0x4e0 [<8c18a994>] kasprintf+0x14/0x20 [<8c442782>] early_platform_driver_probe+0x20e/0x2bc [<8c1fade0>] platform_match+0x0/0x100 [<8c33babc>] printk+0x0/0x24 [<8c434892>] start_kernel+0x32e/0x574 [<8c33babc>] printk+0x0/0x24 [<8c17d320>] strlen+0x0/0x58 [<8c43430c>] unknown_bootoption+0x0/0x1e0 [<8c011024>] _stext+0x24/0x30 ---[ end trace cb88537fdc8fa200 ]--- Signed-off-by: Viresh Kumar Signed-off-by: Daniel Lezcano Tested-by: Geert Uytterhoeven --- drivers/clocksource/sh_tmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c index 43c98143f79a..469e776ec17a 100644 --- a/drivers/clocksource/sh_tmu.c +++ b/drivers/clocksource/sh_tmu.c @@ -362,7 +362,8 @@ static int sh_tmu_clock_event_shutdown(struct clock_event_device *ced) { struct sh_tmu_channel *ch = ced_to_sh_tmu(ced); - sh_tmu_disable(ch); + if (clockevent_state_oneshot(ced) || clockevent_state_periodic(ced)) + sh_tmu_disable(ch); return 0; } -- 2.34.1