From 32c58c4d3bd0046bef8e2b5fcadff963f3ef7274 Mon Sep 17 00:00:00 2001 From: Mathieu Poirier Date: Fri, 30 Nov 2018 11:43:04 -0700 Subject: [PATCH] coresight: etf: Release CLAIM tag after disabling the HW This patch rectifies the sequence of events in function tmc_etb_disable_hw() by disabling the HW first and then releasing the CLAIM tag. Otherwise we could be corrupting the configuration done by an external agent that would have claimed the device after we have released it. Signed-off-by: Mathieu Poirier Reviewed-by: Suzuki K Poulose Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/coresight/coresight-tmc-etf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 5864ac55..a5f053f 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -86,8 +86,8 @@ static void __tmc_etb_disable_hw(struct tmc_drvdata *drvdata) static void tmc_etb_disable_hw(struct tmc_drvdata *drvdata) { - coresight_disclaim_device(drvdata->base); __tmc_etb_disable_hw(drvdata); + coresight_disclaim_device(drvdata->base); } static void __tmc_etf_enable_hw(struct tmc_drvdata *drvdata) -- 2.7.4