From: Tao Zhang <quic_taozha@quicinc.com>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Konrad Dybcio <konradybcio@gmail.com>,
Mike Leach <mike.leach@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Tao Zhang <quic_taozha@quicinc.com>,
Jinlong Mao <quic_jinlmao@quicinc.com>,
Leo Yan <leo.yan@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<coresight@lists.linaro.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
Tingwei Zhang <quic_tingweiz@quicinc.com>,
Yuanfang Zhang <quic_yuanfang@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Hao Zhang <quic_hazha@quicinc.com>,
<linux-arm-msm@vger.kernel.org>, <andersson@kernel.org>
Subject: [PATCH v8 01/13] coresight-tpdm: Remove the unnecessary lock
Date: Tue, 22 Aug 2023 13:26:01 +0800 [thread overview]
Message-ID: <1692681973-20764-2-git-send-email-quic_taozha@quicinc.com> (raw)
In-Reply-To: <1692681973-20764-1-git-send-email-quic_taozha@quicinc.com>
Remove the unnecessary lock "CS_{UN,}LOCK" in TPDM driver. This
lock is only needed while writing the data to Coresight registers.
Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
---
drivers/hwtracing/coresight/coresight-tpdm.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
index f4854af..b645612 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.c
+++ b/drivers/hwtracing/coresight/coresight-tpdm.c
@@ -114,11 +114,9 @@ static void tpdm_init_default_data(struct tpdm_drvdata *drvdata)
{
u32 pidr;
- CS_UNLOCK(drvdata->base);
/* Get the datasets present on the TPDM. */
pidr = readl_relaxed(drvdata->base + CORESIGHT_PERIPHIDR0);
drvdata->datasets |= pidr & GENMASK(TPDM_DATASETS - 1, 0);
- CS_LOCK(drvdata->base);
}
/*
--
2.7.4
next prev parent reply other threads:[~2023-08-22 5:27 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-22 5:26 [PATCH v8 00/13] Add support to configure TPDM DSB subunit Tao Zhang
2023-08-22 5:26 ` Tao Zhang [this message]
2023-08-22 5:26 ` [PATCH v8 02/13] dt-bindings: arm: Add support for DSB element size Tao Zhang
2023-08-22 5:26 ` [PATCH v8 03/13] coresight-tpdm: Introduce TPDM subtype to TPDM driver Tao Zhang
2023-08-22 5:26 ` [PATCH v8 04/13] coresight-tpda: Add DSB dataset support Tao Zhang
2023-08-23 1:35 ` kernel test robot
2023-08-31 15:51 ` Suzuki K Poulose
2023-08-22 5:26 ` [PATCH v8 05/13] coresight-tpdm: Initialize DSB subunit configuration Tao Zhang
2023-08-22 5:26 ` [PATCH v8 06/13] coresight-tpdm: Add reset node to TPDM node Tao Zhang
2023-08-31 20:34 ` Suzuki K Poulose
2023-09-01 2:09 ` Tao Zhang
2023-08-22 5:26 ` [PATCH v8 07/13] coresight-tpdm: Add nodes to set trigger timestamp and type Tao Zhang
2023-09-01 10:43 ` Suzuki K Poulose
2023-09-01 14:41 ` Tao Zhang
2023-09-08 8:27 ` Suzuki K Poulose
2023-08-22 5:26 ` [PATCH v8 08/13] coresight-tpdm: Add node to set dsb programming mode Tao Zhang
2023-09-01 10:55 ` Suzuki K Poulose
2023-08-22 5:26 ` [PATCH v8 09/13] coresight-tpdm: Add nodes for dsb edge control Tao Zhang
2023-09-01 14:07 ` Suzuki K Poulose
2023-09-01 16:01 ` Tao Zhang
2023-09-05 9:36 ` Suzuki K Poulose
2023-09-07 6:47 ` Tao Zhang
2023-08-22 5:26 ` [PATCH v8 10/13] coresight-tpdm: Add nodes to configure pattern match output Tao Zhang
2023-09-05 9:41 ` Suzuki K Poulose
2023-09-07 6:41 ` Tao Zhang
2023-08-22 5:26 ` [PATCH v8 11/13] coresight-tpdm: Add nodes for timestamp request Tao Zhang
2023-09-06 9:09 ` Suzuki K Poulose
2023-09-08 1:11 ` Tao Zhang
2023-08-22 5:26 ` [PATCH v8 12/13] dt-bindings: arm: Add support for DSB MSR register Tao Zhang
2023-08-22 5:26 ` [PATCH v8 13/13] coresight-tpdm: Add nodes for dsb msr support Tao Zhang
2023-09-06 9:32 ` Suzuki K Poulose
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