linux-kernel - [RFC PATCH 08/14] rtc-efi: set uie_unsupported for indicate rtc-efi doesn't support UIE mode

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Message-Id: <1387439515-8926-9-git-send-email-jlee@suse.com>
Date:	Thu, 19 Dec 2013 15:51:49 +0800
From:	"Lee, Chun-Yi" <joeyli.kernel@...il.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	"H. Peter Anvin" <hpa@...or.com>,
	Matt Fleming <matt@...sole-pimps.org>,
	Matthew Garrett <matthew.garrett@...ula.com>
Cc:	Elliott@...com, samer.el-haj-mahmoud@...com,
	Oliver Neukum <oneukum@...e.de>, werner@...e.com,
	trenn@...e.de, JBeulich@...e.com, linux-kernel@...r.kernel.org,
	rtc-linux@...glegroups.com, x86@...nel.org,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	linux-acpi@...r.kernel.org, "Lee, Chun-Yi" <jlee@...e.com>
Subject: [RFC PATCH 08/14] rtc-efi: set uie_unsupported for indicate rtc-efi doesn't support UIE mode

This patch set uie_unsupported flag when driver probed because current
rtc-efi driver doesn't support UIE mode. Otherwise RTC_UIE_ON ioctl doesn't
return EINVAL and it causes userspace think the RTC_UIE supported by rtc-efi.

Set uie_unsupported then We can enable CONFIG_RTC_INTF_DEV_UIE_EMUL to
emulate RTC_UIE on rtc-efi.

Signed-off-by: Lee, Chun-Yi <jlee@...e.com>
---
 drivers/rtc/rtc-efi.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c
index e0e3c7e..693ea47 100644
--- a/drivers/rtc/rtc-efi.c
+++ b/drivers/rtc/rtc-efi.c
@@ -293,6 +293,8 @@ static int efi_rtc_probe(struct platform_device *dev)
 
 	rtc->caps = (RTC_TZ_CAP | RTC_DST_CAP);
 
+	rtc->uie_unsupported = 1;
+
 	platform_set_drvdata(dev, rtc);
 
 	return 0;
-- 
1.6.4.2

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