sr: Made the dev_config_set parameter a const pointer

[libsigrok.git] / hardware / demo / demo.c

diff --git a/hardware/demo/demo.c b/hardware/demo/demo.c
index adf873043570617cd3eebe9b599db41a9893ca7a..c5a7719c6624d15c8b28cd905e2a5d027a0f00a2 100644 (file)
--- a/hardware/demo/demo.c
+++ b/hardware/demo/demo.c
@@ -231,10 +231,10 @@ static const int *hw_hwcap_get_all(void)
        return hwcaps;
 }
 
-static int hw_dev_config_set(int dev_index, int hwcap, void *value)
+static int hw_dev_config_set(int dev_index, int hwcap, const void *value)
 {
        int ret;
-       char *stropt;
+       const char *stropt;
 
        /* Avoid compiler warnings. */
        (void)dev_index;
@@ -243,17 +243,17 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value)
                /* Nothing to do, but must be supported */
                ret = SR_OK;
        } else if (hwcap == SR_HWCAP_SAMPLERATE) {
-               cur_samplerate = *(uint64_t *)value;
+               cur_samplerate = *(const uint64_t *)value;
                sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__,
                       cur_samplerate);
                ret = SR_OK;
        } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) {
-               limit_samples = *(uint64_t *)value;
+               limit_samples = *(const uint64_t *)value;
                sr_dbg("demo: %s: setting limit_samples to %" PRIu64, __func__,
                       limit_samples);
                ret = SR_OK;
        } else if (hwcap == SR_HWCAP_LIMIT_MSEC) {
-               limit_msec = *(uint64_t *)value;
+               limit_msec = *(const uint64_t *)value;
                sr_dbg("demo: %s: setting limit_msec to %" PRIu64, __func__,
                       limit_msec);
                ret = SR_OK;