linux-kernel - [PATCH] firmware: arm_ffa: Add ffa_add_partition

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Message-Id: <9967e35eb1cbdb8d0c0bae3f54401d806700e6b6.1732255888.git.viresh.kumar@linaro.org>
Date: Fri, 22 Nov 2024 11:41:38 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Sudeep Holla <sudeep.holla@....com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Alex Bennée <alex.bennee@...aro.org>,
	Bill Mills <bill.mills@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] firmware: arm_ffa: Add ffa_add_partition_info()

Move common code to a new routine. No functional change.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/firmware/arm_ffa/driver.c | 53 ++++++++++++++-----------------
 1 file changed, 23 insertions(+), 30 deletions(-)

diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index b14cbdae94e8..d50062cb6c43 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -1384,12 +1384,31 @@ static struct notifier_block ffa_bus_nb = {
 	.notifier_call = ffa_bus_notifier,
 };
 
+static int ffa_add_partition_info(int vm_id)
+{
+	struct ffa_dev_part_info *info;
+	int ret;
+
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	rwlock_init(&info->rw_lock);
+	ret = xa_insert(&drv_info->partition_info, vm_id, info, GFP_KERNEL);
+	if (ret) {
+		pr_err("%s: failed to save partition ID 0x%x - ret:%d. Abort.\n",
+		       __func__, vm_id, ret);
+		kfree(info);
+	}
+
+	return ret;
+}
+
 static int ffa_setup_partitions(void)
 {
 	int count, idx, ret;
 	uuid_t uuid;
 	struct ffa_device *ffa_dev;
-	struct ffa_dev_part_info *info;
 	struct ffa_partition_info *pbuf, *tpbuf;
 
 	if (drv_info->version == FFA_VERSION_1_0) {
@@ -1427,42 +1446,16 @@ static int ffa_setup_partitions(void)
 		    !(tpbuf->properties & FFA_PARTITION_AARCH64_EXEC))
 			ffa_mode_32bit_set(ffa_dev);
 
-		info = kzalloc(sizeof(*info), GFP_KERNEL);
-		if (!info) {
+		if (ffa_add_partition_info(tpbuf->id))
 			ffa_device_unregister(ffa_dev);
-			continue;
-		}
-		rwlock_init(&info->rw_lock);
-		ret = xa_insert(&drv_info->partition_info, tpbuf->id,
-				info, GFP_KERNEL);
-		if (ret) {
-			pr_err("%s: failed to save partition ID 0x%x - ret:%d\n",
-			       __func__, tpbuf->id, ret);
-			ffa_device_unregister(ffa_dev);
-			kfree(info);
-		}
 	}
 
 	kfree(pbuf);
 
 	/* Allocate for the host */
-	info = kzalloc(sizeof(*info), GFP_KERNEL);
-	if (!info) {
-		/* Already registered devices are freed on bus_exit */
-		ffa_partitions_cleanup();
-		return -ENOMEM;
-	}
-
-	rwlock_init(&info->rw_lock);
-	ret = xa_insert(&drv_info->partition_info, drv_info->vm_id,
-			info, GFP_KERNEL);
-	if (ret) {
-		pr_err("%s: failed to save Host partition ID 0x%x - ret:%d. Abort.\n",
-		       __func__, drv_info->vm_id, ret);
-		kfree(info);
-		/* Already registered devices are freed on bus_exit */
+	ret = ffa_add_partition_info(drv_info->vm_id);
+	if (ret)
 		ffa_partitions_cleanup();
-	}
 
 	return ret;
 }
-- 
2.31.1.272.g89b43f80a514