linux-kernel - [PATCH 5.4 004/475] hv: utils: add PTP_1588

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Message-Id: <20220414110855.274446341@linuxfoundation.org>
Date:   Thu, 14 Apr 2022 15:06:29 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
        linux-hyperv@...r.kernel.org,
        Michael Kelley <mikelley@...rosoft.com>,
        Petr Štetiar <ynezz@...e.cz>
Subject: [PATCH 5.4 004/475] hv: utils: add PTP_1588_CLOCK to Kconfig to fix build

From: Randy Dunlap <rdunlap@...radead.org>

commit 1dc2f2b81a6a9895da59f3915760f6c0c3074492 upstream.

The hyperv utilities use PTP clock interfaces and should depend a
a kconfig symbol such that they will be built as a loadable module or
builtin so that linker errors do not happen.

Prevents these build errors:

ld: drivers/hv/hv_util.o: in function `hv_timesync_deinit':
hv_util.c:(.text+0x37d): undefined reference to `ptp_clock_unregister'
ld: drivers/hv/hv_util.o: in function `hv_timesync_init':
hv_util.c:(.text+0x738): undefined reference to `ptp_clock_register'

Fixes: 3716a49a81ba ("hv_utils: implement Hyper-V PTP source")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>
Cc: Haiyang Zhang <haiyangz@...rosoft.com>
Cc: Stephen Hemminger <sthemmin@...rosoft.com>
Cc: Wei Liu <wei.liu@...nel.org>
Cc: Dexuan Cui <decui@...rosoft.com>
Cc: linux-hyperv@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
Link: https://lore.kernel.org/r/20211126023316.25184-1-rdunlap@infradead.org
Signed-off-by: Wei Liu <wei.liu@...nel.org>
Cc: Petr Štetiar <ynezz@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/hv/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -17,6 +17,7 @@ config HYPERV_TIMER
 config HYPERV_UTILS
 	tristate "Microsoft Hyper-V Utilities driver"
 	depends on HYPERV && CONNECTOR && NLS
+	depends on PTP_1588_CLOCK_OPTIONAL
 	help
 	  Select this option to enable the Hyper-V Utilities.