linux-kernel - [PATCH 1/6] Drivers: hv: Fix warnings for missing export.h header inclusion

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Message-Id: <20250611100459.92900-2-namjain@linux.microsoft.com>
Date: Wed, 11 Jun 2025 15:34:54 +0530
From: Naman Jain <namjain@...ux.microsoft.com>
To: "K . Y . Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>,
	Dexuan Cui <decui@...rosoft.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	"H . Peter Anvin" <hpa@...or.com>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	Sean Christopherson <seanjc@...gle.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Konstantin Taranov <kotaranov@...rosoft.com>,
	Leon Romanovsky <leon@...nel.org>,
	Long Li <longli@...rosoft.com>,
	Shiraz Saleem <shirazsaleem@...rosoft.com>,
	Shradha Gupta <shradhagupta@...ux.microsoft.com>,
	Maxim Levitsky <mlevitsk@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Erni Sri Satya Vennela <ernis@...ux.microsoft.com>,
	Souradeep Chakrabarti <schakrabarti@...ux.microsoft.com>
Cc: linux-hyperv@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: [PATCH 1/6] Drivers: hv: Fix warnings for missing export.h header inclusion

Fix below warning in Hyper-V drivers that comes when kernel is compiled
with W=1 option. Include export.h in driver files to fix it.
* warning: EXPORT_SYMBOL() is used, but #include <linux/export.h>
is missing

Signed-off-by: Naman Jain <namjain@...ux.microsoft.com>
---
 drivers/hv/channel.c           | 1 +
 drivers/hv/channel_mgmt.c      | 1 +
 drivers/hv/hv_proc.c           | 1 +
 drivers/hv/mshv_common.c       | 1 +
 drivers/hv/mshv_root_hv_call.c | 1 +
 drivers/hv/ring_buffer.c       | 1 +
 6 files changed, 6 insertions(+)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 35f26fa1ffe7..7c7c66e0dc3f 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -18,6 +18,7 @@
 #include <linux/uio.h>
 #include <linux/interrupt.h>
 #include <linux/set_memory.h>
+#include <linux/export.h>
 #include <asm/page.h>
 #include <asm/mshyperv.h>
 
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 6e084c207414..65dd299e2944 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/cpu.h>
 #include <linux/hyperv.h>
+#include <linux/export.h>
 #include <asm/mshyperv.h>
 #include <linux/sched/isolation.h>
 
diff --git a/drivers/hv/hv_proc.c b/drivers/hv/hv_proc.c
index 7d7ecb6f6137..fbb4eb3901bb 100644
--- a/drivers/hv/hv_proc.c
+++ b/drivers/hv/hv_proc.c
@@ -6,6 +6,7 @@
 #include <linux/slab.h>
 #include <linux/cpuhotplug.h>
 #include <linux/minmax.h>
+#include <linux/export.h>
 #include <asm/mshyperv.h>
 
 /*
diff --git a/drivers/hv/mshv_common.c b/drivers/hv/mshv_common.c
index 2575e6d7a71f..6f227a8a5af7 100644
--- a/drivers/hv/mshv_common.c
+++ b/drivers/hv/mshv_common.c
@@ -13,6 +13,7 @@
 #include <linux/mm.h>
 #include <asm/mshyperv.h>
 #include <linux/resume_user_mode.h>
+#include <linux/export.h>
 
 #include "mshv.h"
 
diff --git a/drivers/hv/mshv_root_hv_call.c b/drivers/hv/mshv_root_hv_call.c
index a222a16107f6..c9c274f29c3c 100644
--- a/drivers/hv/mshv_root_hv_call.c
+++ b/drivers/hv/mshv_root_hv_call.c
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/mm.h>
+#include <linux/export.h>
 #include <asm/mshyperv.h>
 
 #include "mshv_root.h"
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 3c9b02471760..23ce1fb70de1 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -18,6 +18,7 @@
 #include <linux/slab.h>
 #include <linux/prefetch.h>
 #include <linux/io.h>
+#include <linux/export.h>
 #include <asm/mshyperv.h>
 
 #include "hyperv_vmbus.h"
-- 
2.34.1