From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B842EB64DD for ; Wed, 9 Aug 2023 11:03:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232985AbjHILD2 (ORCPT ); Wed, 9 Aug 2023 07:03:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233017AbjHILDL (ORCPT ); Wed, 9 Aug 2023 07:03:11 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6301E2113 for ; Wed, 9 Aug 2023 04:03:11 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 03EE163118 for ; Wed, 9 Aug 2023 11:03:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17306C433C9; Wed, 9 Aug 2023 11:03:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691578990; bh=sh0BdM7yCUfougoeb6Vj0qsgIljj/yM9u9Iu3TFNyq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=glpI+ukUeuz2TTxmDZIlTvGqfd44atwsXVzfOipQFnCnI/3QBAw3m1wYBGoUCfqb+ Vn0RHqdXYrDxYn6mLeqyUadSOJN8R4Ye8dYEOYm6zaMFzq1RdLydraedGJnNN8TGcI oVm8fC+iJbTomuhk7fFVg4yB2QJHnth9IxtepkPI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Luca Weiss , Dmitry Torokhov , Sasha Levin Subject: [PATCH 4.14 035/204] Input: drv260x - sleep between polling GO bit Date: Wed, 9 Aug 2023 12:39:33 +0200 Message-ID: <20230809103643.747220239@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103642.552405807@linuxfoundation.org> References: <20230809103642.552405807@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Luca Weiss [ Upstream commit efef661dfa6bf8cbafe4cd6a97433fcef0118967 ] When doing the initial startup there's no need to poll without any delay and spam the I2C bus. Let's sleep 15ms between each attempt, which is the same time as used in the vendor driver. Fixes: 7132fe4f5687 ("Input: drv260x - add TI drv260x haptics driver") Signed-off-by: Luca Weiss Link: https://lore.kernel.org/r/20230430-drv260x-improvements-v1-2-1fb28b4cc698@z3ntu.xyz Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin --- drivers/input/misc/drv260x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c index 17eb84ab4c0b7..fe3fbde989be2 100644 --- a/drivers/input/misc/drv260x.c +++ b/drivers/input/misc/drv260x.c @@ -443,6 +443,7 @@ static int drv260x_init(struct drv260x_data *haptics) } do { + usleep_range(15000, 15500); error = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf); if (error) { dev_err(&haptics->client->dev, -- 2.39.2