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usb: typec: tcpm: free log buf memory when remove debug file

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The logbuffer memory should be freed when remove debug file.

Cc: stable@vger.kernel.org # v4.15+
Fixes: 4b4e02c831 ("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>
This commit is contained in:
Li Jun 2019-07-17 16:06:45 +08:00 committed by Greg Kroah-Hartman
parent 1957de95d4
commit fd5da3e2cc
1 changed files with 9 additions and 0 deletions
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9
drivers/usb/typec/tcpm/tcpm.c
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@ -587,6 +587,15 @@ static void tcpm_debugfs_init(struct tcpm_port *port)
static void tcpm_debugfs_exit(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); debugfs_remove(port->dentry);
} }