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Date:   Sun,  3 Jan 2021 22:36:18 +0100
From:   Arnd Bergmann <>
To:     Richard Cochran <>,
        "David S. Miller" <>
Cc:     Arnd Bergmann <>,
        Stefan Sørensen 
Subject: [PATCH 2/7] phy: dp83640: select CONFIG_CRC32

From: Arnd Bergmann <>

Without crc32, this driver fails to link:

arm-linux-gnueabi-ld: drivers/net/phy/dp83640.o: in function `match':
dp83640.c:(.text+0x476c): undefined reference to `crc32_le'

Fixes: 539e44d26855 ("dp83640: Include hash in timestamp/packet matching")
Signed-off-by: Arnd Bergmann <>
 drivers/ptp/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 476d7c7fe70a..d2bf05ccbbe2 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -64,6 +64,7 @@ config DP83640_PHY
 	depends on PHYLIB
 	depends on PTP_1588_CLOCK
+	select CRC32
 	  Supports the DP83640 PHYTER with IEEE 1588 features.

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