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 D45DC1C07 for ; Wed, 28 Dec 2022 16:27:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 586B3C433EF; Wed, 28 Dec 2022 16:27:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672244871; bh=rmVJhHKZMH1FTxKYZ4Mv4xjq0qkgcS+ycGLygZcWE9Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1gM6NTB69RwQ0Y8Uung9dJdezw7LXC4avi3Ap/IGBfNtUu583WnldKbYb9njeTDIg m4ODUDv+rJicJXVpTyqXig5MG/vns+pESkzLjiQuKrj6suzd5G81fmTAVOvGMFgBl2 05L2/R2mroPOaQb5qTXw1XKWKCh0QH9AV49b46qk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexander Stein , Alexandre Belloni , Sasha Levin Subject: [PATCH 6.0 0791/1073] rtc: pcf85063: Fix reading alarm Date: Wed, 28 Dec 2022 15:39:39 +0100 Message-Id: <20221228144349.496650584@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144328.162723588@linuxfoundation.org> References: <20221228144328.162723588@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: Alexander Stein [ Upstream commit a6ceee26fd5ed9b5bd37322b1ca88e4548cee4a3 ] If the alarms are disabled the topmost bit (AEN_*) is set in the alarm registers. This is also interpreted in BCD number leading to this warning: rtc rtc0: invalid alarm value: 2022-09-21T80:80:80 Fix this by masking alarm enabling and reserved bits. Fixes: 05cb3a56ee8c ("rtc: pcf85063: add alarm support") Signed-off-by: Alexander Stein Link: https://lore.kernel.org/r/20220921074141.3903104-1-alexander.stein@ew.tq-group.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- drivers/rtc/rtc-pcf85063.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index 095891999da1..99f9cc57c7b3 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -169,10 +169,10 @@ static int pcf85063_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) if (ret) return ret; - alrm->time.tm_sec = bcd2bin(buf[0]); - alrm->time.tm_min = bcd2bin(buf[1]); - alrm->time.tm_hour = bcd2bin(buf[2]); - alrm->time.tm_mday = bcd2bin(buf[3]); + alrm->time.tm_sec = bcd2bin(buf[0] & 0x7f); + alrm->time.tm_min = bcd2bin(buf[1] & 0x7f); + alrm->time.tm_hour = bcd2bin(buf[2] & 0x3f); + alrm->time.tm_mday = bcd2bin(buf[3] & 0x3f); ret = regmap_read(pcf85063->regmap, PCF85063_REG_CTRL2, &val); if (ret) -- 2.35.1