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    SubjectRe: [PATCH 2/3] moxa: remove pointless check of 'tty' argument vs NULL
    On 15/05/06, Alan Cox <> wrote:
    > On Mon, May 15, 2006 at 11:57:35PM +0200, Jesper Juhl wrote:
    > > Remove pointless check of 'tty' argument vs NULL from moxa driver.
    > Can you leave those in for the moment but change them to BUG_ON() because
    > I've seen the pop up once or twice. They may be fixed but Im not 100% sure
    > yet.

    I could, but would that really make sense?

    As Alexey pointed out in the previous thread :

    > ->write() is called via
    > tty->driver->write(tty, ...);
    > See? tty was already dereferenced.

    And besides, we wouldn't ever get to the BUG_ON() because even if the
    function did manage to get called it would then explode in the
    struct mxser_struct *info = tty->driver_data;
    assignment, before it ever got to the BUG_ON() (that assignment could
    ofcourse be moved as I did in my original patch, but that still leaves
    Alexeys point in place).

    Jesper Juhl <>
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      Last update: 2006-05-16 00:11    [W:0.021 / U:52.272 seconds]
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