lkml.org 
[lkml]   [2021]   [Jun]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v3 0/6] RTL8231 GPIO expander support
    Am 2021-06-01 11:59, schrieb Linus Walleij:
    > Just regarding all registers/memory cells in a register page
    > as default volatile (which is what we do a lot of the time)
    > has its upsides: bugs like this doesn't happen.

    I don't think this is the bug here. If it is really a write-only
    register
    the problem is the read in RMW. Because reading the register will return
    the input value instead of the (previously written) output value.

    -michael

    \
     
     \ /
      Last update: 2021-06-01 12:19    [W:3.703 / U:0.372 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site