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Sat, 24 Oct 2026 19:48:51 -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 a92af1059eb24-198a2e32479sm10521272c88.21.2026.10.24.19.48.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Oct 2026 19:48:51 -0700 (PDT) From: Dmitry Torokhov Date: Sat, 24 Oct 2026 19:48:43 -0700 Subject: [PATCH 3/8] Input: cyapa - use 4-argument i2c_smbus_read_block_data() X-Mailing-List: linux-input@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-i2c-smbus-read-block-data-v1-3-19bb97467982@gmail.com> References: <20261024-i2c-smbus-read-block-data-v1-0-19bb97467982@gmail.com> In-Reply-To: <20261024-i2c-smbus-read-block-data-v1-0-19bb97467982@gmail.com> To: Mika Westerberg , Andi Shyti , Corey Minyard , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Sebastian Reichel Cc: linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, openipmi-developer@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org X-Mailer: b4 0.17-dev-e56a4 Pass the transfer length to i2c_smbus_read_block_data() in cyapa_smbus_read_block(), accounting for the final chunk size. Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/cyapa_gen3.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index fc3fb954523b..0cdebf2c34e7 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -256,7 +256,7 @@ ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len, if (SMBUS_GROUP_BLOCK_CMD_MASK & cmd) { /* read specific block registers command. */ smbus_cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ); - ret = i2c_smbus_read_block_data(client, smbus_cmd, values); + ret = i2c_smbus_read_block_data(client, smbus_cmd, len, values); goto out; } @@ -265,7 +265,11 @@ ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len, smbus_cmd = SMBUS_ENCODE_IDX(cmd, index); smbus_cmd = SMBUS_ENCODE_RW(smbus_cmd, SMBUS_READ); buf = values + I2C_SMBUS_BLOCK_MAX * index; - ret = i2c_smbus_read_block_data(client, smbus_cmd, buf); + ret = i2c_smbus_read_block_data(client, smbus_cmd, + min_t(size_t, + len - I2C_SMBUS_BLOCK_MAX * index, + I2C_SMBUS_BLOCK_MAX), + buf); if (ret < 0) goto out; } -- 2.56.0.257.gf7497c7d27-goog