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    SubjectRe: [PATCH v4] tty: serial: jsm: allocate queue buffer at probe time
    On Wed, Jul 7, 2021 at 4:14 PM Andy Shevchenko
    <andy.shevchenko@gmail.com> wrote:
    >
    >
    >
    > On Monday, July 5, 2021, Zheyu Ma <zheyuma97@gmail.com> wrote:
    >>
    >> In function 'neo_intr', the driver uses 'ch->ch_equeue' and
    >> 'ch->ch_reuque'. These two pointers are initialized in 'jsm_tty_open',
    >> but the interrupt handler 'neo_intr' has been registered in the probe
    >> progress. If 'jsm_tty_open' has not been called at this time, it will
    >> cause null pointer dereference.
    >>
    >> Once the driver registers the interrupt handler, the driver should be
    >> ready to handle it.
    >>
    >> Fix this by allocating the memory at probe time and not at open time.
    >>
    >> This log reveals it:
    >
    >
    >
    > When doing commit messages try to avoid tons of noise in them, I.e. here is _a lot of useless lines_ from the log, has to be addressed.

    Thanks for your advice, I will learn from other commits.

    Regards,
    Zheyu Ma

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