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qemu_fw_cfg: don't leak kobj on init error

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If platform_driver_register fails, we should
cleanup fw_cfg_top_ko before exiting.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
This commit is contained in:
Michael S. Tsirkin 2016-04-03 15:22:08 +03:00
parent 9735a22799
commit e8aabc64d7
1 changed files with 7 additions and 1 deletions
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8
drivers/firmware/qemu_fw_cfg.c
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@ -727,12 +727,18 @@ device_param_cb(mmio, &fw_cfg_cmdline_param_ops, NULL, S_IRUSR);
static int __init fw_cfg_sysfs_init(void)
{
int ret;
/* create /sys/firmware/qemu_fw_cfg/ top level directory */
fw_cfg_top_ko = kobject_create_and_add("qemu_fw_cfg", firmware_kobj);
if (!fw_cfg_top_ko)
return -ENOMEM;
return platform_driver_register(&fw_cfg_sysfs_driver);
ret = platform_driver_register(&fw_cfg_sysfs_driver);
if (ret)
fw_cfg_kobj_cleanup(fw_cfg_top_ko);
return ret;
}
static void __exit fw_cfg_sysfs_exit(void)