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authorMarc-André Lureau <marcandre.lureau@redhat.com>2018-02-28 16:06:08 +0100
committerMichael S. Tsirkin <mst@redhat.com>2018-03-20 03:17:39 +0200
commit3d47a34ba6761a64b78a8b89f6bbe93b4e8455f1 (patch)
treedca063229a600f43262cbeabf8bf75a47ee5bf39 /drivers/firmware
parentf295c8dba71841f007e2154143109d1517670a08 (diff)
downloadlinux-3d47a34ba6761a64b78a8b89f6bbe93b4e8455f1.tar.bz2
fw_cfg: fix sparse warnings around FW_CFG_FILE_DIR read
Use struct fw_cfg_files to read the directory size, fixing the sparse warnings: drivers/firmware/qemu_fw_cfg.c:485:17: warning: cast to restricted __be32 Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/qemu_fw_cfg.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
index 0eb155fdfb35..00ad9b862414 100644
--- a/drivers/firmware/qemu_fw_cfg.c
+++ b/drivers/firmware/qemu_fw_cfg.c
@@ -496,19 +496,20 @@ err_register:
static int fw_cfg_register_dir_entries(void)
{
int ret = 0;
+ __be32 files_count;
u32 count, i;
struct fw_cfg_file *dir;
size_t dir_size;
- fw_cfg_read_blob(FW_CFG_FILE_DIR, &count, 0, sizeof(count));
- count = be32_to_cpu(count);
+ fw_cfg_read_blob(FW_CFG_FILE_DIR, &files_count, 0, sizeof(files_count));
+ count = be32_to_cpu(files_count);
dir_size = count * sizeof(struct fw_cfg_file);
dir = kmalloc(dir_size, GFP_KERNEL);
if (!dir)
return -ENOMEM;
- fw_cfg_read_blob(FW_CFG_FILE_DIR, dir, sizeof(count), dir_size);
+ fw_cfg_read_blob(FW_CFG_FILE_DIR, dir, sizeof(files_count), dir_size);
for (i = 0; i < count; i++) {
ret = fw_cfg_register_file(&dir[i]);