linux-kernel - [PATCH v3 1/8] firmware_loader: Clear data and size in fw_free_paged

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Message-Id: <20220418223753.639058-2-russell.h.weight@intel.com>
Date:   Mon, 18 Apr 2022 15:37:46 -0700
From:   Russ Weight <russell.h.weight@...el.com>
To:     mcgrof@...nel.org, rafael@...nel.org, linux-kernel@...r.kernel.org
Cc:     trix@...hat.com, lgoncalv@...hat.com, yilun.xu@...el.com,
        hao.wu@...el.com, matthew.gerlach@...ux.intel.com,
        basheer.ahmed.muddebihal@...el.com, tianfei.zhang@...el.com,
        Russ Weight <russell.h.weight@...el.com>
Subject: [PATCH v3 1/8] firmware_loader: Clear data and size in fw_free_paged_buf

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@...nel.org>
Signed-off-by: Russ Weight <russell.h.weight@...el.com>
---
v1:
  - No change from RFC patch
v2:
  - No change
v3:
  - Added Reviewed-by tag
---
 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 94d1789a233e..2cc11d93753a 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -253,6 +253,8 @@ 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)
-- 
2.25.1