i2c: Add work-around to make i2c scan work#73
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Pull request overview
Implements a workaround for I2C hardware that cannot perform 0-byte transfers, which are typically requested during I2C device scanning. When a scan operation is detected (0-byte transfer with non-NULL data pointer), the driver now sends a single dummy byte instead.
Changes:
- Modified parameter validation to allow 0-byte transfers when data pointer is non-NULL
- Added logic to override buffer size to 1 byte for I2C scan operations
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The I2C HW cannot support 0-byte transfer as I2C scan requests. Send one dummy byte for I2C scan to make it work. Signed-off-by: Dong Wang <dong.d.wang@intel.com>
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Pull request overview
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likongintel
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Jan 28, 2026
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The I2C HW cannot support 0-byte transfer as I2C scan requests. Send one dummy byte for I2C scan to make it work.