1 files changed, 15 insertions, 8 deletions

diff --git a/src/gamma-drm.c b/src/gamma-drm.c
index 7ed223d..e912f85 100644
--- a/src/gamma-drm.c
+++ b/src/gamma-drm.c
@@ -48,11 +48,13 @@ struct gamma_state {
 static int
 drm_init(struct gamma_state **state)
 {
+	struct gamma_state *s;
+
 	/* Initialize state. */
-	*state = malloc(sizeof(struct gamma_state));
+	*state = malloc(sizeof(**state));
 	if (*state == NULL) return -1;
 
-	struct gamma_state *s = *state;
+	s = *state;
 	s->card_num = 0;
 	s->crtc_num = -1;
 	s->fd = -1;
@@ -68,6 +70,8 @@ drm_start(struct gamma_state *state, enum program_mode mode)
 	/* Acquire access to a graphics card. */
 	long maxlen = strlen(DRM_DIR_NAME) + strlen(DRM_DEV_NAME) + 10;
 	char pathname[maxlen];
+	int crtc_count;
+	struct drm_crtc_state *crtcs;
 
 	sprintf(pathname, DRM_DEV_NAME, DRM_DIR_NAME, state->card_num);
 
@@ -91,7 +95,7 @@ drm_start(struct gamma_state *state, enum program_mode mode)
 	}
 
 	/* Create entries for selected CRTCs. */
-	int crtc_count = state->res->count_crtcs;
+	crtc_count = state->res->count_crtcs;
 	if (state->crtc_num >= 0) {
 		if (state->crtc_num >= crtc_count) {
 			fprintf(stderr, _("CRTC %d does not exist. "),
@@ -133,10 +137,11 @@ drm_start(struct gamma_state *state, enum program_mode mode)
 	}
 
 	/* Load CRTC information and gamma ramps. */
-	struct drm_crtc_state *crtcs = state->crtcs;
+	crtcs = state->crtcs;
 	for (; crtcs->crtc_num >= 0; crtcs++) {
+		drmModeCrtc *crtc_info;
 		crtcs->crtc_id = state->res->crtcs[crtcs->crtc_num];
-		drmModeCrtc* crtc_info = drmModeGetCrtc(state->fd, crtcs->crtc_id);
+		crtc_info = drmModeGetCrtc(state->fd, crtcs->crtc_id);
 		if (crtc_info == NULL) {
 			fprintf(stderr, _("CRTC %i lost, skipping\n"), crtcs->crtc_num);
 			continue;
@@ -259,6 +264,8 @@ drm_set_temperature(
 	uint16_t *r_gamma = NULL;
 	uint16_t *g_gamma = NULL;
 	uint16_t *b_gamma = NULL;
+	uint16_t value;
+	uint32_t i, ramp_size;
 
 	for (; crtcs->crtc_num >= 0; crtcs++) {
 		if (crtcs->gamma_size <= 1)
@@ -281,9 +288,9 @@ drm_set_temperature(
 		}
 
 		/* Initialize gamma ramps to pure state */
-		uint32_t ramp_size = crtcs->gamma_size;
-		for (uint32_t i = 0; i < ramp_size; i++) {
-			uint16_t value = (double)i/ramp_size * (UINT16_MAX+1);
+		ramp_size = crtcs->gamma_size;
+		for (i = 0; i < ramp_size; i++) {
+			value = (uint16_t)((double)i/ramp_size * (UINT16_MAX+1));
 			r_gamma[i] = value;
 			g_gamma[i] = value;
 			b_gamma[i] = value;