linux-kernel - [PATCH] [v2] rtc: bq4802: add sparc dependency

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Message-Id: <20230719192835.1025406-1-arnd@kernel.org>
Date:   Wed, 19 Jul 2023 21:28:18 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        "David S . Miller" <davem@...emloft.net>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [v2] rtc: bq4802: add sparc dependency

From: Arnd Bergmann <arnd@...db.de>

The added HAS_IOPORT dependency might not actually be necessary as Geert
points out, but the driver is also only used on one architecture. Sparc
is also a special case here since it converts port numbers into virtual
addresses rather than having them mapped into a particular part of the
__iomem address space, so the difference is actually not important here.

Add a dependency on sparc, but allow compile-testing otherwise, to
make this clearer without anyone having to spend much time modernizing
the driver beyond that.

Reported-by: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: David S. Miller <davem@...emloft.net>
Link: https://lore.kernel.org/all/CAMuHMdWEx0F=fNei4Bz_JPkuvoaN-+zk08h0i8KnSi_VjO615g@mail.gmail.com/
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
v2: split dependency into two lines, as suggested by Geert
---
 drivers/rtc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 05f4b2d66290d..19c3eac474f7c 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1196,6 +1196,7 @@ config RTC_DRV_MSM6242
 config RTC_DRV_BQ4802
 	tristate "TI BQ4802"
 	depends on HAS_IOMEM && HAS_IOPORT
+	depends on SPARC || COMPILE_TEST
 	help
 	  If you say Y here you will get support for the TI
 	  BQ4802 RTC chip.
-- 
2.39.2