linux-kernel - [PATCH 1/3] staging: vchiq_arm: add reference to vchiq device in vchiq

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Date:   Mon,  2 May 2022 14:30:40 -0400
From:   Adrien Thierry <athierry@...hat.com>
To:     Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Adrien Thierry <athierry@...hat.com>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] staging: vchiq_arm: add reference to vchiq device in vchiq_state

Add a reference to the vchiq device in the vchiq_state structure. This
allows the device structure to be passed around, which will be useful in
order to get rid of the global g_dev structure.

Signed-off-by: Adrien Thierry <athierry@...hat.com>
---
 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 2 +-
 .../staging/vc04_services/interface/vchiq_arm/vchiq_core.c    | 4 +++-
 .../staging/vc04_services/interface/vchiq_arm/vchiq_core.h    | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 0596ac61e286..e6e0737c85fc 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -519,7 +519,7 @@ int vchiq_platform_init(struct platform_device *pdev, struct vchiq_state *state)
 	*(char **)&g_fragments_base[i * g_fragments_size] = NULL;
 	sema_init(&g_free_fragments_sema, MAX_FRAGMENTS);
 
-	err = vchiq_init_state(state, vchiq_slot_zero);
+	err = vchiq_init_state(state, vchiq_slot_zero, dev);
 	if (err)
 		return err;
 
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
index 8f99272dbd6f..0d5c39d7c6e2 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -2142,7 +2142,7 @@ vchiq_init_slots(void *mem_base, int mem_size)
 }
 
 int
-vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero)
+vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero, struct device *dev)
 {
 	struct vchiq_shared_state *local;
 	struct vchiq_shared_state *remote;
@@ -2169,6 +2169,8 @@ vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero)
 
 	memset(state, 0, sizeof(struct vchiq_state));
 
+	state->dev = dev;
+
 	/*
 	 * initialize shared state pointers
 	 */
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h
index 82b7bd7b54b2..352017ff5309 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h
@@ -315,6 +315,7 @@ struct vchiq_slot_zero {
 };
 
 struct vchiq_state {
+	struct device *dev;
 	int id;
 	int initialised;
 	enum vchiq_connstate conn_state;
@@ -458,7 +459,7 @@ extern struct vchiq_slot_zero *
 vchiq_init_slots(void *mem_base, int mem_size);
 
 extern int
-vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero);
+vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero, struct device *dev);
 
 extern enum vchiq_status
 vchiq_connect_internal(struct vchiq_state *state, struct vchiq_instance *instance);
-- 
2.35.1