[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231012094706.21565-4-hejunhao3@huawei.com>
Date: Thu, 12 Oct 2023 17:47:06 +0800
From: Junhao He <hejunhao3@...wei.com>
To: <suzuki.poulose@....com>, <james.clark@....com>
CC: <coresight@...ts.linaro.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>,
<jonathan.cameron@...wei.com>, <yangyicong@...wei.com>,
<prime.zeng@...ilicon.com>, <hejunhao3@...wei.com>
Subject: [PATCH 3/3] coresight: ultrasoc-smb: fix uninitialized before use buf_hw_base
In smb_reset_buffer, the sdb->buf_hw_base variable is uninitialized
before use, which initializes it in smb_init_data_buffer. And the SMB
regiester are set in smb_config_inport.
So move the call after smb_config_inport.
Fixes: 06f5c2926aaa ("drivers/coresight: Add UltraSoc System Memory Buffer driver")
Signed-off-by: Junhao He <hejunhao3@...wei.com>
---
drivers/hwtracing/coresight/ultrasoc-smb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c
index e78edc3480ce..21ba473786e5 100644
--- a/drivers/hwtracing/coresight/ultrasoc-smb.c
+++ b/drivers/hwtracing/coresight/ultrasoc-smb.c
@@ -475,7 +475,6 @@ static int smb_init_data_buffer(struct platform_device *pdev,
static void smb_init_hw(struct smb_drv_data *drvdata)
{
smb_disable_hw(drvdata);
- smb_reset_buffer(drvdata);
writel(SMB_LB_CFG_LO_DEFAULT, drvdata->base + SMB_LB_CFG_LO_REG);
writel(SMB_LB_CFG_HI_DEFAULT, drvdata->base + SMB_LB_CFG_HI_REG);
@@ -597,6 +596,7 @@ static int smb_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, drvdata);
+ smb_reset_buffer(drvdata);
return 0;
}
--
2.33.0
Powered by blists - more mailing lists