summaryrefslogtreecommitdiff
path: root/drivers/hid/hid-logitech-hidpp.c
diff options
context:
space:
mode:
authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2023-06-05 19:56:36 +0300
committerJiri Kosina <jkosina@suse.cz>2023-06-05 22:59:58 +0300
commit7c28afd5512e371773dbb2bf95a31ed5625651d9 (patch)
treeb4ef51402d67480f18556899f50516216e3051ed /drivers/hid/hid-logitech-hidpp.c
parent6199d23c91ce53bfed455f09a8c5ed170d516824 (diff)
downloadlinux-7c28afd5512e371773dbb2bf95a31ed5625651d9.tar.xz
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 <mlord@pobox.com> Tested-by: Mark Lord <mlord@pobox.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-logitech-hidpp.c')
-rw-r--r--drivers/hid/hid-logitech-hidpp.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 2246044b1639..5e1a412fd28f 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;