From 4db5835b6ffd5d7460e6d53ec55ab3ad8c9ec0cd Mon Sep 17 00:00:00 2001 From: "J. Nick Koston" Date: Mon, 9 Feb 2026 09:32:08 -0600 Subject: [PATCH 1/2] Update comment explaining early guard --- esphome/components/cse7766/cse7766.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/esphome/components/cse7766/cse7766.cpp b/esphome/components/cse7766/cse7766.cpp index b4b282dff9..c68c348be0 100644 --- a/esphome/components/cse7766/cse7766.cpp +++ b/esphome/components/cse7766/cse7766.cpp @@ -15,8 +15,9 @@ void CSE7766Component::loop() { this->raw_data_index_ = 0; } - // All current UART available() implementations return >= 0, - // use <= 0 to future-proof against any that may return negative on error. + // Early return avoids stack adjustment for the batch buffer below + // and prevents updating last_transmission_ when no data is available. + // loop() runs ~7000/min so most calls have nothing to read. int avail = this->available(); if (avail <= 0) { return; From ca8617cf10a4a012133b6c662e4bda6e79a28ca0 Mon Sep 17 00:00:00 2001 From: "J. Nick Koston" Date: Mon, 9 Feb 2026 09:41:45 -0600 Subject: [PATCH 2/2] Fix early guard comment --- esphome/components/cse7766/cse7766.cpp | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/esphome/components/cse7766/cse7766.cpp b/esphome/components/cse7766/cse7766.cpp index c68c348be0..45abd3ca3d 100644 --- a/esphome/components/cse7766/cse7766.cpp +++ b/esphome/components/cse7766/cse7766.cpp @@ -15,9 +15,7 @@ void CSE7766Component::loop() { this->raw_data_index_ = 0; } - // Early return avoids stack adjustment for the batch buffer below - // and prevents updating last_transmission_ when no data is available. - // loop() runs ~7000/min so most calls have nothing to read. + // Early return prevents updating last_transmission_ when no data is available. int avail = this->available(); if (avail <= 0) { return;