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[71.56.157.77]) by smtp.gmail.com with ESMTPSA id q4sm2393529pfg.3.2021.06.04.14.33.28 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jun 2021 14:33:28 -0700 (PDT) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH BlueZ] shared/mgmt: Fix not processing request queue Date: Fri, 4 Jun 2021 14:33:26 -0700 Message-Id: <20210604213326.1724684-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz If the kernel return an invalid opcode like bellow the request won't be processed leading making it unusable: @ MGMT Command: Read Advertising Features (0x003d) plen 0 {0x0001} [hci0] 14:25:11.096370 @ MGMT Event: Command Status (0x0002) plen 3 {0x0001} [hci0] 14:25:11.096373 Set Advertising (0x0029) Status: Not Supported (0x0c) In order to fix this attempts to remove the first request pending on the given index: = bluetoothd: src/advertising.c:read_adv_features_callback() Failed to read advertising features: Not Supported (0x0c) --- src/shared/mgmt.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/src/shared/mgmt.c b/src/shared/mgmt.c index 3e9b9ee26..767a711d6 100644 --- a/src/shared/mgmt.c +++ b/src/shared/mgmt.c @@ -235,8 +235,10 @@ static bool match_request_opcode_index(const void *a, const void *b) const struct mgmt_request *request = a; const struct opcode_index *match = b; - return request->opcode == match->opcode && - request->index == match->index; + if (match->opcode && request->opcode != match->opcode) + return false; + + return request->index == match->index; } static void request_complete(struct mgmt *mgmt, uint8_t status, @@ -248,6 +250,18 @@ static void request_complete(struct mgmt *mgmt, uint8_t status, request = queue_remove_if(mgmt->pending_list, match_request_opcode_index, &match); + if (!request) { + util_debug(mgmt->debug_callback, mgmt->debug_data, + "Unable to find request for opcode 0x%02x", + opcode); + + /* Attempt to remove with no opcode */ + match.opcode = 0x0000; + request = queue_remove_if(mgmt->pending_list, + match_request_opcode_index, + &match); + } + if (request) { if (request->callback) request->callback(status, length, param,