On Wed, Apr 22, 2015 at 3:20 PM, Semen Protsenko <semen.protse...@globallogic.com> wrote:
> MAX732X clears all pending interrupts on I2C read (when interrupts > register is being read). Driver doesn't need to send any ACKs when > interrupt was handled. So replace handle_edge_irq() with > handle_simple_irq(). > > Using handle_edge_irq() (w/o .irq_ack callback set) may lead to NULL > pointer dereference in some cases. E.g. this was observed on > hibernation process: > > Unable to handle kernel NULL pointer dereference at virtual address 0 > Backtrace: > (handle_edge_irq) from (resend_irqs) > (resend_irqs) from (tasklet_action) > (tasklet_action) from (__do_softirq) > (__do_softirq) from (run_ksoftirqd) > (run_ksoftirqd) from (smpboot_thread_fn) > (smpboot_thread_fn) from (kthread) > (kthread) from (ret_from_fork) > > Signed-off-by: Semen Protsenko <semen.protse...@globallogic.com> Patch applied with Grygorii's Review tag. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
