Since the core layer determines whether context save and restore operations are needed, performing the same check within the save and restore callbacks is redundant.
The save and restore flows currently use two-level functions: the first level handles the condition check, while the second level performs the low level operations. As the checks are no longer necessary, simplify the logic into single-level functions.
Reviewed-by: Mike Leach mike.leach@linaro.org Tested-by: James Clark james.clark@linaro.org Reviewed-by: Yeoreum Yun yeoreum.yun@arm.com Reviewed-by: James Clark james.clark@linaro.org Signed-off-by: Leo Yan leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 35 +++------------------- 1 file changed, 4 insertions(+), 31 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 6d13fa29d178627e3f0918d265634ab63e24803d..087a32fe34890528c6fa6ada601aeb742f04c41b 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1861,11 +1861,11 @@ static int etm4_dying_cpu(unsigned int cpu) return 0; }
-static int __etm4_cpu_save(struct etmv4_drvdata *drvdata) +static int etm4_cpu_save(struct coresight_device *csdev) { int i, ret = 0; struct etmv4_save_state *state; - struct coresight_device *csdev = drvdata->csdev; + struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); struct csdev_access *csa; struct device *etm_dev;
@@ -2003,26 +2003,10 @@ static int __etm4_cpu_save(struct etmv4_drvdata *drvdata) return ret; }
-static int etm4_cpu_save(struct coresight_device *csdev) -{ - struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - int ret = 0; - - if (pm_save_enable != PARAM_PM_SAVE_SELF_HOSTED) - return 0; - - /* - * Save and restore the ETM Trace registers only if - * the ETM is active. - */ - if (coresight_get_mode(drvdata->csdev)) - ret = __etm4_cpu_save(drvdata); - return ret; -} - -static void __etm4_cpu_restore(struct etmv4_drvdata *drvdata) +static void etm4_cpu_restore(struct coresight_device *csdev) { int i; + struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); struct etmv4_save_state *state = drvdata->save_state; struct csdev_access *csa = &drvdata->csdev->access;
@@ -2121,17 +2105,6 @@ static void __etm4_cpu_restore(struct etmv4_drvdata *drvdata) etm4_cs_lock(drvdata, csa); }
-static void etm4_cpu_restore(struct coresight_device *csdev) -{ - struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - - if (pm_save_enable != PARAM_PM_SAVE_SELF_HOSTED) - return; - - if (coresight_get_mode(drvdata->csdev)) - __etm4_cpu_restore(drvdata); -} - /* Setup PM. Deals with error conditions and counts */ static int __init etm4_pm_setup(void) {