From 7c28afd5512e371773dbb2bf95a31ed5625651d9 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 5 Jun 2023 18:56:36 +0200 Subject: [PATCH] HID: hidpp: terminate retry loop on success It seems we forgot the normal case to terminate the retry loop, making us asking 3 times each command, which is probably a little bit too much. And remove the ugly "goto exit" that can be replaced by a simpler "break" Fixes: 586e8fede795 ("HID: logitech-hidpp: Retry commands when device is busy") Suggested-by: Mark Lord Tested-by: Mark Lord Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-logitech-hidpp.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 2246044..5e1a412 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -286,7 +286,7 @@ static int hidpp_send_message_sync(struct hidpp_device *hidpp, struct hidpp_report *message, struct hidpp_report *response) { - int ret; + int ret = -1; int max_retries = 3; mutex_lock(&hidpp->send_mutex); @@ -300,13 +300,13 @@ static int hidpp_send_message_sync(struct hidpp_device *hidpp, */ *response = *message; - for (; max_retries != 0; max_retries--) { + for (; max_retries != 0 && ret; max_retries--) { ret = __hidpp_send_report(hidpp->hid_dev, message); if (ret) { dbg_hid("__hidpp_send_report returned err: %d\n", ret); memset(response, 0, sizeof(struct hidpp_report)); - goto exit; + break; } if (!wait_event_timeout(hidpp->wait, hidpp->answer_available, @@ -314,14 +314,14 @@ static int hidpp_send_message_sync(struct hidpp_device *hidpp, dbg_hid("%s:timeout waiting for response\n", __func__); memset(response, 0, sizeof(struct hidpp_report)); ret = -ETIMEDOUT; - goto exit; + break; } if (response->report_id == REPORT_ID_HIDPP_SHORT && response->rap.sub_id == HIDPP_ERROR) { ret = response->rap.params[1]; dbg_hid("%s:got hidpp error %02X\n", __func__, ret); - goto exit; + break; } if ((response->report_id == REPORT_ID_HIDPP_LONG || @@ -330,13 +330,12 @@ static int hidpp_send_message_sync(struct hidpp_device *hidpp, ret = response->fap.params[1]; if (ret != HIDPP20_ERROR_BUSY) { dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret); - goto exit; + break; } dbg_hid("%s:got busy hidpp 2.0 error %02X, retrying\n", __func__, ret); } } -exit: mutex_unlock(&hidpp->send_mutex); return ret; -- 2.7.4