From: Li Jun jun.li@nxp.com
commit fd5da3e2cc61b4a7c877172fdc9348c82cf6ccfc upstream.
The logbuffer memory should be freed when remove debug file.
Cc: stable@vger.kernel.org # v4.15+ Fixes: 4b4e02c83167 ("typec: tcpm: Move out of staging") Signed-off-by: Li Jun jun.li@nxp.com Reviewed-by: Guenter Roeck linux@roeck-us.net Link: https://lore.kernel.org/r/20190717080646.30421-1-jun.li@nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/typec/tcpm.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -585,6 +585,15 @@ static void tcpm_debugfs_init(struct tcp
static void tcpm_debugfs_exit(struct tcpm_port *port) { + int i; + + mutex_lock(&port->logbuffer_lock); + for (i = 0; i < LOG_BUFFER_ENTRIES; i++) { + kfree(port->logbuffer[i]); + port->logbuffer[i] = NULL; + } + mutex_unlock(&port->logbuffer_lock); + debugfs_remove(port->dentry); }