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fw_cfg: fix sparse warning reading FW_CFG_ID 

Use a restricted type for reading FW_CFG_ID, fixing sparse warning:

drivers/firmware/qemu_fw_cfg.c:540:22: warning: cast to restricted __le32

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marc-André Lureau 2018-02-28 16:06:07 +01:00 committed by Michael S. Tsirkin
parent d174ea7d38
commit f295c8dba7
1 changed files with 3 additions and 2 deletions
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5
drivers/firmware/qemu_fw_cfg.c
View File

@ -530,6 +530,7 @@ static inline void fw_cfg_kobj_cleanup(struct kobject *kobj)
static int fw_cfg_sysfs_probe(struct platform_device *pdev)
{
int err;
__le32 rev;
/* NOTE: If we supported multiple fw_cfg devices, we'd first create
* a subdirectory named after e.g. pdev->id, then hang per-device
@ -555,8 +556,8 @@ static int fw_cfg_sysfs_probe(struct platform_device *pdev)
goto err_probe;
/* get revision number, add matching top-level attribute */
fw_cfg_read_blob(FW_CFG_ID, &fw_cfg_rev, 0, sizeof(fw_cfg_rev));
fw_cfg_rev = le32_to_cpu(fw_cfg_rev);
fw_cfg_read_blob(FW_CFG_ID, &rev, 0, sizeof(rev));
fw_cfg_rev = le32_to_cpu(rev);
err = sysfs_create_file(fw_cfg_top_ko, &fw_cfg_rev_attr.attr);
if (err)
goto err_rev;