linux-kernel - [PATCH] rtc: make definitions in include/uapi/linux/rtc.h actually useful for user space

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Message-ID: <20200324041209.GA30727@asgard.redhat.com>
Date:   Tue, 24 Mar 2020 05:12:09 +0100
From:   Eugene Syromiatnikov <esyr@...hat.com>
To:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Alessandro Zummo <a.zummo@...ertech.it>,
        "Dmitry V. Levin" <ldv@...linux.org>
Subject: [PATCH] rtc: make definitions in include/uapi/linux/rtc.h actually
 useful for user space

BIT() macro is not defined in UAPI headers; there is, however, similarly
defined _BITUL() macro present in include/uapi/linux/const.h; use it
instead and include <linux/const.h> and <linux/ioctl.h> in order to make
the definitions provided in the header useful.

Fixes: 3431ca4837bf ("rtc: define RTC_VL_READ values")
Signed-off-by: Eugene Syromiatnikov <esyr@...hat.com>
---
 include/uapi/linux/rtc.h | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/include/uapi/linux/rtc.h b/include/uapi/linux/rtc.h
index 095af36..83bba58 100644
--- a/include/uapi/linux/rtc.h
+++ b/include/uapi/linux/rtc.h
@@ -12,6 +12,9 @@
 #ifndef _UAPI_LINUX_RTC_H_
 #define _UAPI_LINUX_RTC_H_
 
+#include <linux/const.h>
+#include <linux/ioctl.h>
+
 /*
  * The struct used to pass data via the following ioctl. Similar to the
  * struct tm in <time.h>, but it needs to be here so that the kernel
@@ -92,10 +95,10 @@ struct rtc_pll_info {
 #define RTC_PLL_GET	_IOR('p', 0x11, struct rtc_pll_info)  /* Get PLL correction */
 #define RTC_PLL_SET	_IOW('p', 0x12, struct rtc_pll_info)  /* Set PLL correction */
 
-#define RTC_VL_DATA_INVALID	BIT(0) /* Voltage too low, RTC data is invalid */
-#define RTC_VL_BACKUP_LOW	BIT(1) /* Backup voltage is low */
-#define RTC_VL_BACKUP_EMPTY	BIT(2) /* Backup empty or not present */
-#define RTC_VL_ACCURACY_LOW	BIT(3) /* Voltage is low, RTC accuracy is reduced */
+#define RTC_VL_DATA_INVALID	_BITUL(0) /* Voltage too low, RTC data is invalid */
+#define RTC_VL_BACKUP_LOW	_BITUL(1) /* Backup voltage is low */
+#define RTC_VL_BACKUP_EMPTY	_BITUL(2) /* Backup empty or not present */
+#define RTC_VL_ACCURACY_LOW	_BITUL(3) /* Voltage is low, RTC accuracy is reduced */
 
 #define RTC_VL_READ	_IOR('p', 0x13, unsigned int)	/* Voltage low detection */
 #define RTC_VL_CLR	_IO('p', 0x14)		/* Clear voltage low information */
-- 
2.1.4