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  • linux-arm
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  • drivers
  • i2c
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  • i2c-riic.c
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  • Chris Brandt's avatar
    i2c: riic: Clear NACK in tend isr · a71e2ac1
    Chris Brandt authored Sep 26, 2019
    The NACKF flag should be cleared in INTRIICNAKI interrupt processing as
    description in HW manual.
    
    This issue shows up quickly when PREEMPT_RT is applied and a device is
    probed that is not plugged in (like a touchscreen controller). The result
    is endless interrupts that halt system boot.
    
    Fixes: 310c18a4
    
     ("i2c: riic: add driver")
    Cc: stable@vger.kernel.org
    Reported-by: default avatarChien Nguyen <chien.nguyen.eb@rvc.renesas.com>
    Signed-off-by: default avatarChris Brandt <chris.brandt@renesas.com>
    Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
    a71e2ac1