linux-kernel - [PATCH v4 1/2] firmware_loader: Refactor kill_pending_fw_fallback

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Date:   Thu, 26 Oct 2023 19:57:38 +0530
From:   Mukesh Ojha <quic_mojha@...cinc.com>
To:     Luis Chamberlain <mcgrof@...nel.org>,
        Russ Weight <russ.weight@...ux.dev>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     "Rafael J. Wysocki" <rafael@...nel.org>,
        <linux-kernel@...r.kernel.org>,
        Mukesh Ojha <quic_mojha@...cinc.com>
Subject: [PATCH v4 1/2] firmware_loader: Refactor kill_pending_fw_fallback_reqs()

Rename 'only_kill_custom' and refactor logic related to it
to be more meaningful.

Signed-off-by: Mukesh Ojha <quic_mojha@...cinc.com>
---
Changes in v4:
 - New patch, no past revision.

 drivers/base/firmware_loader/fallback.c | 4 ++--
 drivers/base/firmware_loader/fallback.h | 4 ++--
 drivers/base/firmware_loader/main.c     | 8 ++++----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c
index bf68e3947814..b3ce07160281 100644
--- a/drivers/base/firmware_loader/fallback.c
+++ b/drivers/base/firmware_loader/fallback.c
@@ -46,7 +46,7 @@ static inline int fw_sysfs_wait_timeout(struct fw_priv *fw_priv,  long timeout)
 
 static LIST_HEAD(pending_fw_head);
 
-void kill_pending_fw_fallback_reqs(bool only_kill_custom)
+void kill_pending_fw_fallback_reqs(bool kill_all)
 {
 	struct fw_priv *fw_priv;
 	struct fw_priv *next;
@@ -54,7 +54,7 @@ void kill_pending_fw_fallback_reqs(bool only_kill_custom)
 	mutex_lock(&fw_lock);
 	list_for_each_entry_safe(fw_priv, next, &pending_fw_head,
 				 pending_list) {
-		if (!fw_priv->need_uevent || !only_kill_custom)
+		if (kill_all || !fw_priv->need_uevent)
 			 __fw_load_abort(fw_priv);
 	}
 	mutex_unlock(&fw_lock);
diff --git a/drivers/base/firmware_loader/fallback.h b/drivers/base/firmware_loader/fallback.h
index 144148595660..ccf912bef6ca 100644
--- a/drivers/base/firmware_loader/fallback.h
+++ b/drivers/base/firmware_loader/fallback.h
@@ -13,7 +13,7 @@ int firmware_fallback_sysfs(struct firmware *fw, const char *name,
 			    struct device *device,
 			    u32 opt_flags,
 			    int ret);
-void kill_pending_fw_fallback_reqs(bool only_kill_custom);
+void kill_pending_fw_fallback_reqs(bool kill_all);
 
 void fw_fallback_set_cache_timeout(void);
 void fw_fallback_set_default_timeout(void);
@@ -28,7 +28,7 @@ static inline int firmware_fallback_sysfs(struct firmware *fw, const char *name,
 	return ret;
 }
 
-static inline void kill_pending_fw_fallback_reqs(bool only_kill_custom) { }
+static inline void kill_pending_fw_fallback_reqs(bool kill_all) { }
 static inline void fw_fallback_set_cache_timeout(void) { }
 static inline void fw_fallback_set_default_timeout(void) { }
 #endif /* CONFIG_FW_LOADER_USER_HELPER */
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index b58c42f1b1ce..522ccee781b4 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -1524,10 +1524,10 @@ static int fw_pm_notify(struct notifier_block *notify_block,
 	case PM_SUSPEND_PREPARE:
 	case PM_RESTORE_PREPARE:
 		/*
-		 * kill pending fallback requests with a custom fallback
-		 * to avoid stalling suspend.
+		 * Here, kill pending fallback requests will only kill
+		 * non-uevent firmware request to avoid stalling suspend.
 		 */
-		kill_pending_fw_fallback_reqs(true);
+		kill_pending_fw_fallback_reqs(false);
 		device_cache_fw_images();
 		break;
 
@@ -1612,7 +1612,7 @@ static int fw_shutdown_notify(struct notifier_block *unused1,
 	 * Kill all pending fallback requests to avoid both stalling shutdown,
 	 * and avoid a deadlock with the usermode_lock.
 	 */
-	kill_pending_fw_fallback_reqs(false);
+	kill_pending_fw_fallback_reqs(true);
 
 	return NOTIFY_DONE;
 }
-- 
2.7.4