sr: convert sr_dev_has_hwcap() to use sdi

[libsigrok.git] / device.c

diff --git a/device.c b/device.c
index be647fb248e7be173810a439fe543d41fb10d59a..98e9fdac7f4f60b43ae40b535d6829d0c6e379b4 100644 (file)
--- a/device.c
+++ b/device.c
@@ -389,7 +389,7 @@ SR_API int sr_dev_trigger_set(const struct sr_dev_inst *sdi, int probenum,
 /**
  * Determine whether the specified device has the specified capability.
  *
- * @param dev Pointer to the device to be checked. Must not be NULL.
+ * @param dev Pointer to the device instance to be checked. Must not be NULL.
  *            If the device's 'driver' field is NULL (virtual device), this
  *            function will always return FALSE (virtual devices don't have
  *            a hardware capabilities list).
@@ -400,45 +400,23 @@ SR_API int sr_dev_trigger_set(const struct sr_dev_inst *sdi, int probenum,
  *         FALSE is also returned upon invalid input parameters or other
  *         error conditions.
  */
-SR_API gboolean sr_dev_has_hwcap(const struct sr_dev *dev, int hwcap)
+SR_API gboolean sr_dev_has_hwcap(const struct sr_dev_inst *sdi, int hwcap)
 {
        const int *hwcaps;
        int i;
 
-       sr_spew("dev: %s: requesting hwcap %d", __func__, hwcap);
-
-       if (!dev) {
-               sr_err("dev: %s: dev was NULL", __func__);
+       if (!sdi || !sdi->driver)
                return FALSE;
-       }
 
-       /*
-        * Virtual devices (which have dev->driver set to NULL) always say that
-        * they don't have the capability (they can't call hwcap_get_all()).
-        */
-       if (!dev->driver) {
-               sr_dbg("dev: %s: dev->driver was NULL, this seems to be "
-                      "a virtual device without capabilities", __func__);
+       if (sdi->driver->info_get(SR_DI_HWCAPS,
+                       (const void **)&hwcaps, NULL) != SR_OK)
                return FALSE;
-       }
-
-       /* TODO: Sanity check on 'hwcap'. */
-
-       if (dev->driver->info_get(SR_DI_HWCAPS,
-                       (const void **)&hwcaps, NULL) != SR_OK) {
-               sr_err("dev: %s: dev has no capabilities", __func__);
-               return FALSE;
-       }
 
        for (i = 0; hwcaps[i]; i++) {
-               if (hwcaps[i] != hwcap)
-                       continue;
-               sr_spew("dev: %s: found hwcap %d", __func__, hwcap);
-               return TRUE;
+               if (hwcaps[i] == hwcap)
+                       return TRUE;
        }
 
-       sr_spew("dev: %s: hwcap %d not found", __func__, hwcap);
-
        return FALSE;
 }