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greybus: hd: fix cport-count check
Fix off-by-one error when checking the number of cports a host-device supports. The CPORT_ID_MAX is the largest valid cport id so the maximum number of cports a host-device can use is CPORT_ID_MAX + 1. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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@ -49,7 +49,7 @@ struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver,
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return ERR_PTR(-EINVAL);
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return ERR_PTR(-EINVAL);
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}
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}
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if (num_cports == 0 || num_cports > CPORT_ID_MAX) {
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if (num_cports == 0 || num_cports > CPORT_ID_MAX + 1) {
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dev_err(parent, "Invalid number of CPorts: %zu\n", num_cports);
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dev_err(parent, "Invalid number of CPorts: %zu\n", num_cports);
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return ERR_PTR(-EINVAL);
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return ERR_PTR(-EINVAL);
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}
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}
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