Messages in this thread Patch in this message | | | From | Andrew Duggan <> | Subject | [PATCH 04/26] Input: synaptics-rmi4 - prevent oopses when irq arrives while the device is not bound | Date | Thu, 5 Nov 2015 15:37:25 -0800 |
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From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
If the device has been registered but is not populated, we should not process any incoming interrupt. Make sure the pointers we are following are valid.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Tested-by: Andrew Duggan <aduggan@synaptics.com> --- drivers/input/rmi4/rmi_driver.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index 2fdc7e8..fe5f2f9 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -279,6 +279,9 @@ int rmi_process_interrupt_requests(struct rmi_device *rmi_dev) struct rmi_function *entry; int error; + if (!data || !data->f01_container || !data->irq_status) + return 0; + error = rmi_read_block(rmi_dev, data->f01_container->fd.data_base_addr + 1, data->irq_status, data->num_of_irq_regs); -- 2.1.4
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