From 4ac4a90d7728b161f0ce0527feb19d60af961dfb Mon Sep 17 00:00:00 2001
From: Russ Weight <russell.h.weight@intel.com>
Date: Thu, 21 Apr 2022 14:21:57 -0700
Subject: [PATCH] firmware_loader: Clear data and size in fw_free_paged_buf
Git-commit: 4ac4a90d7728b161f0ce0527feb19d60af961dfb
Patch-mainline: v5.19-rc1
References: jsc#PED-1263

The fw_free_paged_buf() function resets the paged buffer information in
the fw_priv data structure. Additionally, clear the data and size members
of fw_priv in order to facilitate the reuse of fw_priv. This is being
done in preparation for enabling userspace to initiate multiple firmware
uploads using this sysfs interface.

Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Tianfei zhang <tianfei.zhang@intel.com>
Tested-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Link: https://lore.kernel.org/r/20220421212204.36052-2-russell.h.weight@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/base/firmware_loader/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index 74830aeec7f6..3d9b2074912d 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -254,6 +254,8 @@ void fw_free_paged_buf(struct fw_priv *fw_priv)
 	fw_priv->pages = NULL;
 	fw_priv->page_array_size = 0;
 	fw_priv->nr_pages = 0;
+	fw_priv->data = NULL;
+	fw_priv->size = 0;
 }
 
 int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed)
-- 
2.35.3