[PATCH 0/2] i2c: imx: fix SMBus block-read of 0 locking the bus

[Vincent Jardin]

i2c-imx rejects a SMBus Block Read byte count of 0 (valid per SMBus 3.1
6.5.7) and it returns without a NACK+STOP, leaving the target
holding SDA so the bus is stuck until a power cycle occur.

The same bug is occuring with two independently introduced spots, so the
fix is two patches with their respective Fixes: tags and backport ranges:

  1/2  atomic/polling path       Fixes: 8e8782c71595   v3.16+
  2/2  IRQ-driven state machine  Fixes: 5f5c2d4579ca   v6.13+

Signed-off-by: Vincent Jardin <vjardin at free.fr>
---
Vincent Jardin (2):
      i2c: imx: fix locked bus on SMBus block-read of 0 (atomic)
      i2c: imx: fix locked bus on SMBus block-read of 0 (IRQ)

 drivers/i2c/busses/i2c-imx.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)
---
base-commit: 6916d5703ddf9a38f1f6c2cc793381a24ee914c6
change-id: 20260525-for-upstream-i2c-lx2160-fix-v1-0cba0a0093e5

Best regards,
-- 
Vincent Jardin <vjardin at free.fr>