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From: Arnd Bergmann <arnd@kernel.org>
To: "Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: Jinzhou Su <Jinzhou.Su@amd.com>, Arnd Bergmann <arnd@arndb.de>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Huang Rui <ray.huang@amd.com>,
	amd-gfx@lists.freedesktop.org
Subject: [PATCH] amdgpu: securedisplay: simplify i2c hexdump output
Date: Wed, 24 Mar 2021 14:36:52 +0100	[thread overview]
Message-ID: <20210324133705.2664873-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

A previous fix I did left a rather complicated loop in
amdgpu_securedisplay_debugfs_write() for what could be expressed in a
simple sprintf, as Rasmus pointed out.

This drops the leading 0x for each byte, but is otherwise
much nicer.

Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
index 69d7f6bff5d4..fc3ddd7aa6f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
@@ -92,9 +92,7 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
 	struct drm_device *dev = adev_to_drm(adev);
 	uint32_t phy_id;
 	uint32_t op;
-	int i;
 	char str[64];
-	char i2c_output[256];
 	int ret;
 
 	if (*pos || size > sizeof(str) - 1)
@@ -136,12 +134,9 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
 		ret = psp_securedisplay_invoke(psp, TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC);
 		if (!ret) {
 			if (securedisplay_cmd->status == TA_SECUREDISPLAY_STATUS__SUCCESS) {
-				int pos = 0;
-				memset(i2c_output,  0, sizeof(i2c_output));
-				for (i = 0; i < TA_SECUREDISPLAY_I2C_BUFFER_SIZE; i++)
-					pos += sprintf(i2c_output + pos, " 0x%X",
-						securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf[i]);
-				dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is :%s\n", i2c_output);
+				dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is: %*ph\n",
+					 TA_SECUREDISPLAY_I2C_BUFFER_SIZE,
+					 securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf);
 			} else {
 				psp_securedisplay_parse_resp_status(psp, securedisplay_cmd->status);
 			}
-- 
2.29.2

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@kernel.org>
To: "Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: Jinzhou Su <Jinzhou.Su@amd.com>, Arnd Bergmann <arnd@arndb.de>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Huang Rui <ray.huang@amd.com>,
	amd-gfx@lists.freedesktop.org
Subject: [PATCH] amdgpu: securedisplay: simplify i2c hexdump output
Date: Wed, 24 Mar 2021 14:36:52 +0100	[thread overview]
Message-ID: <20210324133705.2664873-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

A previous fix I did left a rather complicated loop in
amdgpu_securedisplay_debugfs_write() for what could be expressed in a
simple sprintf, as Rasmus pointed out.

This drops the leading 0x for each byte, but is otherwise
much nicer.

Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
index 69d7f6bff5d4..fc3ddd7aa6f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
@@ -92,9 +92,7 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
 	struct drm_device *dev = adev_to_drm(adev);
 	uint32_t phy_id;
 	uint32_t op;
-	int i;
 	char str[64];
-	char i2c_output[256];
 	int ret;
 
 	if (*pos || size > sizeof(str) - 1)
@@ -136,12 +134,9 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
 		ret = psp_securedisplay_invoke(psp, TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC);
 		if (!ret) {
 			if (securedisplay_cmd->status == TA_SECUREDISPLAY_STATUS__SUCCESS) {
-				int pos = 0;
-				memset(i2c_output,  0, sizeof(i2c_output));
-				for (i = 0; i < TA_SECUREDISPLAY_I2C_BUFFER_SIZE; i++)
-					pos += sprintf(i2c_output + pos, " 0x%X",
-						securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf[i]);
-				dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is :%s\n", i2c_output);
+				dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is: %*ph\n",
+					 TA_SECUREDISPLAY_I2C_BUFFER_SIZE,
+					 securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf);
 			} else {
 				psp_securedisplay_parse_resp_status(psp, securedisplay_cmd->status);
 			}
-- 
2.29.2

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@kernel.org>
To: "Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Jinzhou Su <Jinzhou.Su@amd.com>, Huang Rui <ray.huang@amd.com>,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] amdgpu: securedisplay: simplify i2c hexdump output
Date: Wed, 24 Mar 2021 14:36:52 +0100	[thread overview]
Message-ID: <20210324133705.2664873-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

A previous fix I did left a rather complicated loop in
amdgpu_securedisplay_debugfs_write() for what could be expressed in a
simple sprintf, as Rasmus pointed out.

This drops the leading 0x for each byte, but is otherwise
much nicer.

Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
index 69d7f6bff5d4..fc3ddd7aa6f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
@@ -92,9 +92,7 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
 	struct drm_device *dev = adev_to_drm(adev);
 	uint32_t phy_id;
 	uint32_t op;
-	int i;
 	char str[64];
-	char i2c_output[256];
 	int ret;
 
 	if (*pos || size > sizeof(str) - 1)
@@ -136,12 +134,9 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
 		ret = psp_securedisplay_invoke(psp, TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC);
 		if (!ret) {
 			if (securedisplay_cmd->status == TA_SECUREDISPLAY_STATUS__SUCCESS) {
-				int pos = 0;
-				memset(i2c_output,  0, sizeof(i2c_output));
-				for (i = 0; i < TA_SECUREDISPLAY_I2C_BUFFER_SIZE; i++)
-					pos += sprintf(i2c_output + pos, " 0x%X",
-						securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf[i]);
-				dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is :%s\n", i2c_output);
+				dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is: %*ph\n",
+					 TA_SECUREDISPLAY_I2C_BUFFER_SIZE,
+					 securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf);
 			} else {
 				psp_securedisplay_parse_resp_status(psp, securedisplay_cmd->status);
 			}
-- 
2.29.2


             reply	other threads:[~2021-03-24 13:37 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-24 13:36 Arnd Bergmann [this message]
2021-03-24 13:36 ` [PATCH] amdgpu: securedisplay: simplify i2c hexdump output Arnd Bergmann
2021-03-24 13:36 ` Arnd Bergmann
2021-03-25 17:01 ` Alex Deucher
2021-03-25 17:01   ` Alex Deucher
2021-03-25 17:01   ` Alex Deucher

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