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backend/drm: use CRTC pointers instead of indices in realloc_crtcs()

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Improves readability, no functional change.
This commit is contained in:
Simon Ser 2024-02-27 11:45:42 +01:00
parent 4b1713d203
commit d83c15c318
1 changed files with 9 additions and 13 deletions
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22
backend/drm/drm.c
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@ -1271,23 +1271,19 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
drm->num_crtcs, previous_match, new_match);
// Converts our crtc=>connector result into a connector=>crtc one.
ssize_t connector_match[num_connectors];
struct wlr_drm_crtc *connector_match[num_connectors];
for (size_t i = 0 ; i < num_connectors; ++i) {
connector_match[i] = -1;
connector_match[i] = NULL;
}
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (new_match[i] != UNMATCHED) {
connector_match[new_match[i]] = i;
connector_match[new_match[i]] = &drm->crtcs[i];
}
}
for (size_t i = 0; i < num_connectors; ++i) {
struct wlr_drm_connector *conn = connectors[i];
struct wlr_drm_crtc *new_crtc = NULL;
if (connector_match[i] >= 0) {
new_crtc = &drm->crtcs[connector_match[i]];
}
struct wlr_drm_crtc *new_crtc = connector_match[i];
char old_crtc_str[16], new_crtc_str[16];
format_nullable_crtc(old_crtc_str, sizeof(old_crtc_str), conn->crtc);
@ -1313,13 +1309,13 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
if (conn->status != DRM_MODE_CONNECTED || !conn->output.enabled) {
continue;
}
if (connector_match[i] == -1) {
if (connector_match[i] == NULL) {
wlr_log(WLR_DEBUG, "Could not match a CRTC for previously connected output; "
"keeping old configuration");
return;
}
assert(conn->crtc != NULL);
if (connector_match[i] != conn->crtc - drm->crtcs) {
if (connector_match[i] != conn->crtc) {
wlr_log(WLR_DEBUG, "Cannot switch CRTC for enabled output; "
"keeping old configuration");
return;
@ -1330,14 +1326,14 @@ static void realloc_crtcs(struct wlr_drm_backend *drm,
for (size_t i = 0; i < num_connectors; ++i) {
struct wlr_drm_connector *conn = connectors[i];
if (conn->crtc != NULL && connector_match[i] == conn->crtc - drm->crtcs) {
if (conn->crtc != NULL && connector_match[i]) {
// We don't need to change anything
continue;
}
dealloc_crtc(conn);
if (connector_match[i] >= 0) {
conn->crtc = &drm->crtcs[connector_match[i]];
if (connector_match[i] != NULL) {
conn->crtc = connector_match[i];
}
}
}