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([116.72.73.183]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b9caa7e791sm9341385ad.7.2026.04.30.19.35.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Apr 2026 19:35:37 -0700 (PDT) From: Tabrez Ahmed To: Guenter Roeck Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, shuah@kernel.org, me@brighamcampbell.com, Tabrez Ahmed Subject: [PATCH v5 0/3] hwmon: (ads7871) Fix endianness and modernize driver Date: Fri, 1 May 2026 08:05:27 +0530 Message-ID: <20260501023530.31160-1-tabreztalks@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series addresses several issues in the ads7871 driver. It fixes an architecture-dependent endianness bug in the 16-bit register read logic, migrates the driver to the modern hwmon_device_register_with_info() API, and moves the SPI transfer buffer into the driver's private data structure to ensure DMA safety. Note: I do not have access to the physical ADS7871 hardware. This series has been compile-tested only. Changes in v5: - Fixed a bisectability issue where the include modernization was accidentally squashed into Patch 3 instead of Patch 1. - Ensured the 1-byte SPI command write in ads7871_read_reg16() uses a strictly typed 'u8' variable to prevent a Big-Endian pointer hazard. Changes in v4: - Patch 1: Refactored 16-bit register reads to use a dedicated 'u8' transmit variable, eliminating a 32-bit pointer endianness hazard. Changes in v3: - Added Patch 1 to fix the pre-existing endianness bug in 16-bit reads. - Fixed multiple formatting and alignment issues caught by checkpatch --strict, as requested by Guenter Roeck. - Added "While at it, fix checkpatch violations" to Patch 2 commit message. Tabrez Ahmed (3): hwmon: (ads7871) Fix endianness bug in 16-bit register reads hwmon: (ads7871) Convert to hwmon_device_register_with_info hwmon: (ads7871) Use DMA-safe buffer for SPI writes drivers/hwmon/ads7871.c | 122 +++++++++++++++++++++++----------------- 1 file changed, 71 insertions(+), 51 deletions(-) -- 2.43.0