From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C02446B8 for ; Sun, 9 Jul 2023 11:24:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F92EC433C8; Sun, 9 Jul 2023 11:24:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1688901844; bh=LTxDahle6YaZGXZLSQV5iDddTtg5pM13vCY2Tynhp2o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n1lfVOf3owhx0nbdSm4UdV5Ga9/UgzRKd3a8hQEOnnVJ920r8PY6nJ6Wl/LqAPO2n xTXwUqdMMsewJ5KnIl9y23rRPKx8gU43VuxKNOtttSqR/d5Hg6G8sJLvUsk8ndOjo4 MF+9Pys2+ZnlmWWivYpRRxEflg2zIo8ZATBAiZxM= 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 6.3 165/431] Input: drv260x - sleep between polling GO bit Date: Sun, 9 Jul 2023 13:11:53 +0200 Message-ID: <20230709111455.042077485@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230709111451.101012554@linuxfoundation.org> References: <20230709111451.101012554@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 8a9ebfc04a2d9..85371fa1a03ed 100644 --- a/drivers/input/misc/drv260x.c +++ b/drivers/input/misc/drv260x.c @@ -435,6 +435,7 @@ 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