From: Maurice Petallo Date: Fri, 28 Nov 2014 02:11:41 +0000 (+0800) Subject: thermal: Intel SoC DTS: Don't do thermal zone update inside spin_lock X-Git-Tag: omap-for-v3.20/drop-legacy-3517~50^2^2~2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05629296eec7e18038ca90ca4d5fa03824026429;p=pandora-kernel.git thermal: Intel SoC DTS: Don't do thermal zone update inside spin_lock The driver calls spin_lock_irqsave during DTS interrupt. The interrupt handle then calls thermal_zone_device_update which implicitly calls a sleep function and produce the following bug: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:97 in_atomic(): 1, irqs_disabled(): 1, pid: 920, name: irq/86-soc_dts CPU: 0 PID: 920 Comm: irq/86-soc_dts Tainted: G E 3.17.0-rc2+ #1 Hardware name: Intel Corp. VALLEYVIEW B3 PLATFORM/NOTEBOOK, BIOS BYTICRB1.86C.0092.R31.1408290850 08/29/2014 00000000 00000000 c25dbe74 c1818cfd f3cc488c c25dbe9c c1059305 c1b4063b 00000001 00000001 00000398 f3cc488c f6817644 f6817644 f3ecc6c0 c25dbea8 c18208f2 f6817400 c25dbebc c159b0bb c25dbedc f6817400 f32a2300 c25dbee8 Call Trace: [] dump_stack+0x48/0x60 [] __might_sleep+0xec/0xf4 [] mutex_lock+0x1c/0x34 [] thermal_zone_get_temp+0x34/0x59 [] thermal_zone_device_update+0x2d/0xcb [] ? iosf_mbi_write+0x6c/0x74 [iosf_mbi] [] soc_irq_thread_fn+0x10c/0x163 [intel_soc_dts_thermal] [] irq_thread_fn+0x18/0x2a [] irq_thread+0x81/0x11f [] ? irq_finalize_oneshot+0x7c/0x7c [] ? irq_thread+0x11f/0x11f [] ? wake_threads_waitq+0x31/0x31 [] kthread+0x87/0x8c [] ret_from_kernel_thread+0x21/0x30 [] ? __kthread_parkme+0x55/0x55 Signed-off-by: Maurice Petallo Acked-by: Srinivas Pandruvada Acked-by: Eduardo Valentin CC: Kweh, Hock Leong Signed-off-by: Zhang Rui --- Reading git-diff-tree failed