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Sat, 24 Oct 2026 20:06:12 -0700 (PDT) Received: from dtor-ws.sjc.corp.google.com ([2a00:79e0:2ebe:8:8fe4:693:7158:24de]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-369e8ec9276sm20245992eec.25.2026.10.24.20.06.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Oct 2026 20:06:12 -0700 (PDT) From: Dmitry Torokhov Date: Sat, 24 Oct 2026 20:06:06 -0700 Subject: [PATCH 03/31] hwmon: (pt5161l) use 4-argument i2c_smbus_read_block_data() X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261024-hwmon-i2c-smbus-read-block-data-v1-3-e81941ad0cd3@gmail.com> References: <20261024-hwmon-i2c-smbus-read-block-data-v1-0-e81941ad0cd3@gmail.com> In-Reply-To: <20261024-hwmon-i2c-smbus-read-block-data-v1-0-e81941ad0cd3@gmail.com> To: Guenter Roeck , Cosmo Chou , Andy Chung , Ninad Palsule , Abdurrahman Hussain , Robert Marko , Delphine CC Chiu , Daniel Nilsson Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.17-dev-e56a4 Pass the chunk length and destination buffer directly to i2c_smbus_read_block_data() instead of copying through an intermediate buffer. Signed-off-by: Dmitry Torokhov --- drivers/hwmon/pt5161l.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/pt5161l.c b/drivers/hwmon/pt5161l.c index 1638f54f8eae..b38b1f63627a 100644 --- a/drivers/hwmon/pt5161l.c +++ b/drivers/hwmon/pt5161l.c @@ -121,7 +121,7 @@ static int pt5161l_read_block_data(struct pt5161l_data *data, u32 address, int ret, tries; u8 remain_len = len; u8 curr_len; - u8 wbuf[16], rbuf[I2C_SMBUS_BLOCK_MAX]; + u8 wbuf[16]; u8 cmd = 0x08; /* [7]:pec_en, [4:2]:func, [1]:start, [0]:end */ u8 config = 0x00; /* [6]:cfg_type, [4:1]:burst_len, [0]:address bit16 */ @@ -146,14 +146,13 @@ static int pt5161l_read_block_data(struct pt5161l_data *data, u32 address, return ret; ret = i2c_smbus_read_block_data(client, (cmd | 0x1), - rbuf); + curr_len, val); if (ret == curr_len) break; } if (tries >= 3) return ret < 0 ? ret : -EIO; - memcpy(val, rbuf, curr_len); val += curr_len; address += curr_len; } -- 2.56.0.257.gf7497c7d27-goog