sr: sr_hw_has_hwcap(): More docs, error checks.
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2f8cf27409
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15
hwdriver.c
15
hwdriver.c
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@ -264,13 +264,24 @@ SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial)
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* @param driver The hardware driver in which to search for the capability.
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* @param hwcap The capability to find in the list.
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*
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* @return TRUE if found, FALSE otherwise.
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* @return TRUE if the specified capability exists in the specified driver,
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* FALSE otherwise. Also, if 'driver' is NULL or the respective driver
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* returns an invalid capability list, FALSE is returned.
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*/
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SR_API gboolean sr_hw_has_hwcap(struct sr_dev_driver *driver, int hwcap)
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{
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int *hwcaps, i;
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hwcaps = driver->hwcap_get_all();
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if (!driver) {
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sr_err("hwdriver: %s: driver was NULL", __func__);
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return FALSE;
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}
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if (!(hwcaps = driver->hwcap_get_all())) {
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sr_err("hwdriver: %s: hwcap_get_all() returned NULL", __func__);
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return FALSE;
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}
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for (i = 0; hwcaps[i]; i++) {
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if (hwcaps[i] == hwcap)
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return TRUE;
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