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Message-ID: <77ebcfcc-c2b7-47ea-8647-065e23fe4689@arm.com>
Date: Wed, 31 Jan 2024 11:07:11 +0000
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Mao Jinlong <quic_jinlmao@...cinc.com>, Mike Leach
<mike.leach@...aro.org>, James Clark <james.clark@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] coresight: etm4x: Set skip_power_up in
etm4_init_arch_data function
On 31/01/2024 10:54, Mao Jinlong wrote:
> skip_power_up is used in etm4_init_arch_data when set lpoverride. So
> need to set the value of it before calling using it.
Fixes:5214b563588e ("coresight: etm4x: Add support for sysreg only
devices")
>
> Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
I will queue this.
Suzuki
> ---
> drivers/hwtracing/coresight/coresight-etm4x-core.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
> index c5ea808ea662..8afc07d1dd23 100644
> --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
> +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
> @@ -1200,6 +1200,7 @@ static void etm4_init_arch_data(void *info)
> struct etm4_init_arg *init_arg = info;
> struct etmv4_drvdata *drvdata;
> struct csdev_access *csa;
> + struct device *dev = init_arg->dev;
> int i;
>
> drvdata = dev_get_drvdata(init_arg->dev);
> @@ -1213,6 +1214,10 @@ static void etm4_init_arch_data(void *info)
> if (!etm4_init_csdev_access(drvdata, csa))
> return;
>
> + if (!csa->io_mem ||
> + fwnode_property_present(dev_fwnode(dev), "qcom,skip-power-up"))
> + drvdata->skip_power_up = true;
> +
> /* Detect the support for OS Lock before we actually use it */
> etm_detect_os_lock(drvdata, csa);
>
> @@ -2040,11 +2045,6 @@ static int etm4_add_coresight_dev(struct etm4_init_arg *init_arg)
> if (!drvdata->arch)
> return -EINVAL;
>
> - /* TRCPDCR is not accessible with system instructions. */
> - if (!desc.access.io_mem ||
> - fwnode_property_present(dev_fwnode(dev), "qcom,skip-power-up"))
> - drvdata->skip_power_up = true;
> -
> major = ETM_ARCH_MAJOR_VERSION(drvdata->arch);
> minor = ETM_ARCH_MINOR_VERSION(drvdata->arch);
>
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