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    Subject[PATCHv2 2/7] input/cma3000_d0x: Check silicon version
    Date
    Improve probing of the cma3000 chip, by checking the revision of the
    device.

    ---

    v2: Fixes suggested by Jonathan Cameron
    -Remove WhoamI pr_info

    Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
    ---
    drivers/input/misc/cma3000_d0x.c | 8 +++++++-
    1 files changed, 7 insertions(+), 1 deletions(-)

    diff --git a/drivers/input/misc/cma3000_d0x.c b/drivers/input/misc/cma3000_d0x.c
    index f2e87e3..3877cbe 100644
    --- a/drivers/input/misc/cma3000_d0x.c
    +++ b/drivers/input/misc/cma3000_d0x.c
    @@ -26,6 +26,8 @@

    #include "cma3000_d0x.h"

    +#define CMA3000_REV 0x10
    +
    #define CMA3000_WHOAMI 0x00
    #define CMA3000_REVID 0x01
    #define CMA3000_CTRL 0x02
    @@ -366,7 +368,11 @@ struct cma3000_accl_data *cma3000_init(struct device *dev, int irq,
    error = rev;
    goto err_free_mem;
    }
    -
    + if (rev != CMA3000_REV) {
    + error = -EINVAL;
    + pr_err("CMA3000 Accelerometer: Unknown Revision %x\n", rev);
    + goto err_free_mem;
    + }
    pr_info("CMA3000 Accelerometer: Revision %x\n", rev);

    error = request_threaded_irq(irq, NULL, cma3000_thread_irq,
    --
    1.7.7


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