usb: gadget: f_midi: Fix memleak in f_midi_alloc
authorZhang Qilong <zhangqilong3@huawei.com>
Tue, 17 Nov 2020 02:16:28 +0000 (10:16 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 20 Nov 2020 15:32:42 +0000 (16:32 +0100)
commite7694cb6998379341fd9bf3bd62b48c4e6a79385
treecd5c2745685ebe9ac1c37c9e8afb60b92f4ca5c9
parent9ca57518361418ad5ae7dc38a2128fbf4855e1a2
usb: gadget: f_midi: Fix memleak in f_midi_alloc

In the error path, if midi is not null, we should
free the midi->id if necessary to prevent memleak.

Fixes: b85e9de9e818d ("usb: gadget: f_midi: convert to new function interface with backward compatibility")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201117021629.1470544-2-zhangqilong3@huawei.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/gadget/function/f_midi.c