From b02a40713db95ebd8f72151b0fea8080d9f74c27 Mon Sep 17 00:00:00 2001
From: Tom Rix <trix@redhat.com>
Date: Fri, 25 Jun 2021 12:51:46 -0700
Subject: [PATCH] fpga: fpga-mgr: wrap the state() op
Git-commit: b02a40713db95ebd8f72151b0fea8080d9f74c27
Patch-mainline: v5.15-rc1
References: jsc#PED-1263

An FPGA manager should not be required to provide a state() op.
Add a wrapper consistent with the other op wrappers.
Move op check to wrapper.
Default to FPGA_MGR_STATE_UNKNOWN, what noop state() ops use.
Remove unneeded noop state() ops

[mdf@kernel.org: Reworded first line]
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/fpga/dfl-fme-mgr.c   |    6 ------
 drivers/fpga/fpga-mgr.c      |   11 +++++++++--
 drivers/fpga/stratix10-soc.c |    6 ------
 drivers/fpga/ts73xx-fpga.c   |    6 ------
 4 files changed, 9 insertions(+), 20 deletions(-)

--- a/drivers/fpga/dfl-fme-mgr.c
+++ b/drivers/fpga/dfl-fme-mgr.c
@@ -252,11 +252,6 @@ static int fme_mgr_write_complete(struct
 	return 0;
 }
 
-static enum fpga_mgr_states fme_mgr_state(struct fpga_manager *mgr)
-{
-	return FPGA_MGR_STATE_UNKNOWN;
-}
-
 static u64 fme_mgr_status(struct fpga_manager *mgr)
 {
 	struct fme_mgr_priv *priv = mgr->priv;
@@ -268,7 +263,6 @@ static const struct fpga_manager_ops fme
 	.write_init = fme_mgr_write_init,
 	.write = fme_mgr_write,
 	.write_complete = fme_mgr_write_complete,
-	.state = fme_mgr_state,
 	.status = fme_mgr_status,
 };
 
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -25,6 +25,13 @@ struct fpga_mgr_devres {
 	struct fpga_manager *mgr;
 };
 
+static inline enum fpga_mgr_states fpga_mgr_state(struct fpga_manager *mgr)
+{
+	if (mgr->mops->state)
+		return  mgr->mops->state(mgr);
+	return FPGA_MGR_STATE_UNKNOWN;
+}
+
 static inline u64 fpga_mgr_status(struct fpga_manager *mgr)
 {
 	if (mgr->mops->status)
@@ -589,7 +596,7 @@ struct fpga_manager *fpga_mgr_create(str
 	struct fpga_manager *mgr;
 	int id, ret;
 
-	if (!mops || !mops->state) {
+	if (!mops) {
 		dev_err(parent, "Attempt to register without fpga_manager_ops\n");
 		return NULL;
 	}
@@ -707,7 +714,7 @@ int fpga_mgr_register(struct fpga_manage
 	 * from device.  FPGA may be in reset mode or may have been programmed
 	 * by bootloader or EEPROM.
 	 */
-	mgr->state = mgr->mops->state(mgr);
+	mgr->state = fpga_mgr_state(mgr);
 
 	ret = device_add(&mgr->dev);
 	if (ret)
--- a/drivers/fpga/stratix10-soc.c
+++ b/drivers/fpga/stratix10-soc.c
@@ -388,13 +388,7 @@ static int s10_ops_write_complete(struct
 	return ret;
 }
 
-static enum fpga_mgr_states s10_ops_state(struct fpga_manager *mgr)
-{
-	return FPGA_MGR_STATE_UNKNOWN;
-}
-
 static const struct fpga_manager_ops s10_ops = {
-	.state = s10_ops_state,
 	.write_init = s10_ops_write_init,
 	.write = s10_ops_write,
 	.write_complete = s10_ops_write_complete,
--- a/drivers/fpga/ts73xx-fpga.c
+++ b/drivers/fpga/ts73xx-fpga.c
@@ -32,11 +32,6 @@ struct ts73xx_fpga_priv {
 	struct device	*dev;
 };
 
-static enum fpga_mgr_states ts73xx_fpga_state(struct fpga_manager *mgr)
-{
-	return FPGA_MGR_STATE_UNKNOWN;
-}
-
 static int ts73xx_fpga_write_init(struct fpga_manager *mgr,
 				  struct fpga_image_info *info,
 				  const char *buf, size_t count)
@@ -98,7 +93,6 @@ static int ts73xx_fpga_write_complete(st
 }
 
 static const struct fpga_manager_ops ts73xx_fpga_ops = {
-	.state		= ts73xx_fpga_state,
 	.write_init	= ts73xx_fpga_write_init,
 	.write		= ts73xx_fpga_write,
 	.write_complete	= ts73xx_fpga_write_complete,