The patch below does not apply to the 5.5-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From c05a31f4d1de8f49f66f499e67da9c3d745c4f19 Mon Sep 17 00:00:00 2001
From: Corentin Labbe clabbe@baylibre.com Date: Wed, 18 Mar 2020 15:26:49 +0000 Subject: [PATCH] rtc: max8907: add missing select REGMAP_IRQ
I have hit the following build error: armv7a-hardfloat-linux-gnueabi-ld: drivers/rtc/rtc-max8907.o: in function `max8907_rtc_probe': rtc-max8907.c:(.text+0x400): undefined reference to `regmap_irq_get_virq'
max8907 should select REGMAP_IRQ
Fixes: 94c01ab6d7544 ("rtc: add MAX8907 RTC driver") Cc: stable stable@vger.kernel.org Signed-off-by: Corentin Labbe clabbe@baylibre.com Link: https://lore.kernel.org/r/1584545209-20433-1-git-send-email-clabbe@baylibre.... Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 7d6cb60ee010..6c99156cbe57 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -327,6 +327,7 @@ config RTC_DRV_MAX6900 config RTC_DRV_MAX8907 tristate "Maxim MAX8907" depends on MFD_MAX8907 || COMPILE_TEST + select REGMAP_IRQ help If you say yes here you will get support for the RTC of Maxim MAX8907 PMIC.