Sai Prakash Ranjan d021f5c5ff coresight: tmc: Fix TMC mode read in tmc_read_unprepare_etb() ... Reading TMC mode register without proper coresight power management can lead to exceptions like the one in the call trace below in tmc_read_unprepare_etb() when the trace data is read after the sink is disabled. So fix this by having a check for coresight sysfs mode before reading TMC mode management register in tmc_read_unprepare_etb() similar to tmc_read_prepare_etb(). SError Interrupt on CPU6, code 0xbe000411 -- SError pstate: 80400089 (Nzcv daIf +PAN -UAO) pc : tmc_read_unprepare_etb+0x74/0x108 lr : tmc_read_unprepare_etb+0x54/0x108 sp : ffffff80d9507c30 x29: ffffff80d9507c30 x28: ffffff80b3569a0c x27: 0000000000000000 x26: 00000000000a0001 x25: ffffff80cbae9550 x24: 0000000000000010 x23: ffffffd07296b0f0 x22: ffffffd0109ee028 x21: 0000000000000000 x20: ffffff80d19e70e0 x19: ffffff80d19e7080 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: dfffffd000000001 x9 : 0000000000000000 x8 : 0000000000000002 x7 : ffffffd071d0fe78 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffffffd071d0fe98 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Kernel panic - not syncing: Asynchronous SError Interrupt Fixes: 4525412a50 ("coresight: tmc: making prepare/unprepare functions generic") Reported-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Tested-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200716175746.3338735-14-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-07-21 15:48:39 +02:00
..
coresight-catu.c	coresight: catu: Use CS_AMBA_ID macro for id table	2020-07-21 15:48:38 +02:00
coresight-catu.h	coresight: catu: Cleanup device specific data	2019-06-19 20:29:14 +02:00
coresight-cpu-debug.c	coresight: cpu-debug: Add support for Qualcomm Kryo	2019-09-03 22:01:15 +02:00
coresight-cti-platform.c	Char/Misc driver patches for 5.8-rc1	2020-06-07 10:59:32 -07:00
coresight-cti-sysfs.c	coresight: Include required headers in C files	2020-05-19 16:31:18 +02:00
coresight-cti.c	coresight: cti: Fix error handling in probe	2020-07-01 18:44:07 +02:00
coresight-cti.h	coresight: Include required headers in C files	2020-05-19 16:31:18 +02:00
coresight-etb10.c	coresight: etb10: Make coresight_etb_groups static	2020-05-19 16:31:16 +02:00
coresight-etm-cp14.c	coresight: Moving framework and drivers to SPDX identifier	2018-05-14 16:19:59 +02:00
coresight-etm-perf.c	coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute	2019-08-01 20:51:34 +02:00
coresight-etm-perf.h	coresight: perf: Add "sinks" group to PMU directory	2019-02-08 12:27:36 +01:00
coresight-etm.h	coresight: etm: Clean up device specific data	2019-06-19 20:29:14 +02:00
coresight-etm3x-sysfs.c	coresight: etm: Clean up device specific data	2019-06-19 20:29:14 +02:00
coresight-etm3x.c	coresight: Initialize arg in sparse friendly way	2020-05-19 16:31:17 +02:00
coresight-etm4x-sysfs.c	coresight: etmv4: Update default filter and initialisation	2020-05-19 16:31:17 +02:00
coresight-etm4x.c	coresight: etmv4: Counter values not saved on disable	2020-07-21 15:48:39 +02:00
coresight-etm4x.h	coresight: etmv4: Fix resource selector constant	2020-07-21 15:48:39 +02:00
coresight-funnel.c	coresight: funnel: Fix missing spin_lock_init()	2019-11-19 19:18:15 +01:00
coresight-platform.c	coresight: Use devm_kcalloc() in coresight_alloc_conns()	2020-07-21 15:48:39 +02:00
coresight-priv.h	coresight: Avoid casting void pointers	2020-05-19 16:31:18 +02:00
coresight-replicator.c	coresight: replicator: Reset replicator if context is lost	2020-07-21 15:48:38 +02:00
coresight-stm.c	coresight: Drop double check for ACPI companion device	2020-07-21 15:48:39 +02:00
coresight-sysfs.c	coresight: Expose device connections via sysfs	2020-05-19 16:31:15 +02:00
coresight-tmc-etf.c	coresight: tmc: Fix TMC mode read in tmc_read_unprepare_etb()	2020-07-21 15:48:39 +02:00
coresight-tmc-etr.c	coresight: tmc: Add shutdown callback for TMC ETR	2020-07-21 15:48:39 +02:00
coresight-tmc.c	coresight: tmc: Add shutdown callback for TMC ETR	2020-07-21 15:48:39 +02:00
coresight-tmc.h	coresight: tmc: Add shutdown callback for TMC ETR	2020-07-21 15:48:39 +02:00
coresight-tpiu.c	coresight: Use platform agnostic names	2019-06-20 07:56:13 +02:00
coresight.c	coresight: Fix support for sparsely populated ports	2020-05-19 16:31:16 +02:00
Kconfig	docs: fix broken references to text files	2020-04-20 15:35:59 -06:00
Makefile	coresight: Add generic sysfs link creation functions	2020-05-19 16:31:15 +02:00