From patchwork Tue Feb 23 09:02:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12100059 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BAFBDC433E0 for ; Tue, 23 Feb 2021 09:04:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 87A0F64E4D for ; Tue, 23 Feb 2021 09:04:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231791AbhBWJDj (ORCPT ); Tue, 23 Feb 2021 04:03:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43830 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232058AbhBWJDE (ORCPT ); Tue, 23 Feb 2021 04:03:04 -0500 Received: from baptiste.telenet-ops.be (unknown [IPv6:2a02:1800:120:4::f00:13]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9174AC061786 for ; Tue, 23 Feb 2021 01:02:23 -0800 (PST) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed20:254f:253d:debc:790b]) by baptiste.telenet-ops.be with bizsmtp id YZ262401Z1v7dkx01Z266N; Tue, 23 Feb 2021 10:02:06 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1lETa2-000zVr-AV; Tue, 23 Feb 2021 10:02:06 +0100 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1lETa1-0060Pd-F7; Tue, 23 Feb 2021 10:02:05 +0100 From: Geert Uytterhoeven To: Dmitry Torokhov , Michael Tretter Cc: Andrej Valek , linux-input@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH] Input: st1232 - Fix NORMAL vs. IDLE state handling Date: Tue, 23 Feb 2021 10:02:01 +0100 Message-Id: <20210223090201.1430542-1-geert+renesas@glider.be> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org NORMAL (0x0) and IDLE (0x4) are really two different states. Hence you cannot check for both using a bitmask, as that checks for IDLE only, breaking operation for devices that are in NORMAL state. Fix the wait function to report either state as ready. Fixes: 6524d8eac258452e ("Input: st1232 - add IDLE state as ready condition") Signed-off-by: Geert Uytterhoeven Reviewed-by: Michael Tretter --- drivers/input/touchscreen/st1232.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index 885f0572488dd061..6abae665ca71d8ec 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -94,8 +94,13 @@ static int st1232_ts_wait_ready(struct st1232_ts_data *ts) for (retries = 10; retries; retries--) { error = st1232_ts_read_data(ts, REG_STATUS, 1); - if (!error && ts->read_buf[0] == (STATUS_NORMAL | STATUS_IDLE | ERROR_NONE)) - return 0; + if (!error) { + switch (ts->read_buf[0]) { + case STATUS_NORMAL | ERROR_NONE: + case STATUS_IDLE | ERROR_NONE: + return 0; + } + } usleep_range(1000, 2000); }