• R
    irq: Add irq_set_chained_handler_and_data() · 3b0f95be
    Russell King 提交于
    Driver authors seem to get the ordering of irq_set_chained_handler()
    and irq_set_handler_data() wrong - ordering the former before the
    latter.  This opens a race window where, if there is an interrupt
    pending, the handler will be called between these two calls,
    potentially resulting in an oops.
    
    Provide a single interface to set both of these together, especially
    as that's commonly what is required.
    Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
    Cc: Alexandre Courbot <gnurou@gmail.com>
    Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
    Cc: Jason Cooper <jason@lakedaemon.net>
    Cc: Lee Jones <lee.jones@linaro.org>
    Cc: Linus Walleij <linus.walleij@linaro.org>
    Cc: Thierry Reding <thierry.reding@gmail.com>
    Cc: linux-arm-kernel@lists.infradead.org
    Link: http://lkml.kernel.org/r/E1Z4yzs-0002Rw-4B@rmk-PC.arm.linux.org.ukSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
    3b0f95be
irq.h 28.4 KB