From fd5da3e2cc61b4a7c877172fdc9348c82cf6ccfc Mon Sep 17 00:00:00 2001 From: Li Jun Date: Wed, 17 Jul 2019 16:06:45 +0800 Subject: [PATCH] usb: typec: tcpm: free log buf memory when remove debug file 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 Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20190717080646.30421-1-jun.li@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 77f71f602f73..7b6497c1031e 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -587,6 +587,15 @@ static void tcpm_debugfs_init(struct tcpm_port *port) 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); }