| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 27/91] usb: typec: tcpm: free log buf memory when remove debug file | Date | Wed, 14 Aug 2019 19:00:50 +0200 |
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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); }
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