From patchwork Thu Jun 9 08:49:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzung-Bi Shih X-Patchwork-Id: 12875053 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 95D53210B for ; Thu, 9 Jun 2022 08:50:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8BD60C385A9; Thu, 9 Jun 2022 08:50:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1654764637; bh=ALskAB7uMDL0rnO7G/AGFH8ycfhIWZ7nlarq7eYiqxw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Bip3M02J+XtnZd+kejCcrw9WAFXB27husZyxcbznOxi2M7DSOBaZ57qfSIGaYrYso 7tcq8wkfiHYJm0h3O2YglY7yzdrouA2/ncthmDJw59iORO94bhG81LKlKdvOOALjzf Q2Uyx4+bIjjHCSZj8cow+k1az6hcQ7pB4KzsEjkSU1tQXYEmu/BXtqAPmTWeqh4sBd i0U2AVu6/QMrURmjGZfQugDHaw/WneAIVoC70BRwADokQ4+F6czNNmpt47UucBckFX EWqJixlT8SYEiTLCY+GY98izNwPWzUp3eJVEvT4Cy1hrU8uuRYTuvOF5LvHpDCoWKO bpbR4OWjKHiLg== From: Tzung-Bi Shih To: bleung@chromium.org, groeck@chromium.org Cc: chrome-platform@lists.linux.dev, tzungbi@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 19/21] platform/chrome: cros_ec_proto: return 0 on getting wake mask success Date: Thu, 9 Jun 2022 08:49:55 +0000 Message-Id: <20220609084957.3684698-20-tzungbi@kernel.org> X-Mailer: git-send-email 2.36.1.255.ge46751e96f-goog In-Reply-To: <20220609084957.3684698-1-tzungbi@kernel.org> References: <20220609084957.3684698-1-tzungbi@kernel.org> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 cros_ec_get_host_event_wake_mask() used to return value from send_command() which is number of bytes for input payload on success (i.e. sizeof(struct ec_response_host_event_mask)). However, the callers don't need to know how many bytes are available. Don't return number of available bytes. Instead, return 0 on success; otherwise, negative integers on error. Reviewed-by: Guenter Roeck Signed-off-by: Tzung-Bi Shih --- Changes from v3: - Add R-b tag. Changes from v2: - Separate Kunit test to another patch. Changes from v1: - Return 0 on success; otherwise, negative intergers. drivers/platform/chrome/cros_ec_proto.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c index 28c103315144..760a6da0965a 100644 --- a/drivers/platform/chrome/cros_ec_proto.c +++ b/drivers/platform/chrome/cros_ec_proto.c @@ -236,7 +236,7 @@ EXPORT_SYMBOL(cros_ec_check_result); * * @ec_dev: EC device to call * @msg: message structure to use - * @mask: result when function returns >=0. + * @mask: result when function returns 0. * * LOCKING: * the caller has ec_dev->lock mutex, or the caller knows there is @@ -266,6 +266,7 @@ static int cros_ec_get_host_event_wake_mask(struct cros_ec_device *ec_dev, uint3 if (ret > 0) { r = (struct ec_response_host_event_mask *)msg->data; *mask = r->mask; + ret = 0; } exit: