usb: gadget: f_mass_storage: Fix memory leak of fsg buffers

In fsg_common_init, we allocate some buffers via memalign().
However, these buffers are never freed.

Because of that, we cannot call => ums command multiple times on boards
with low memory (CONFIG_SYS_MALLOC_LEN=0x81000):

=> ums 0 mmc 2
UMS: LUN 0, dev mmc 2, hwpart 0, sector 0x0, count 0x3a3e000
|crq->brequest:0x0
CTRL+C - Operation aborted
=> ums 0 mmc 2
UMS: LUN 0, dev mmc 2, hwpart 0, sector 0x0, count 0x3a3e000
failed to start <NULL>: -12
g_dnl_register: failed!, error: -12
g_dnl_register failed

Make sure the fsg buffers are freed when the gadget is unbound by
calling fsg_common_release() in fsg_unbind().

Reported-by: Zixun LI <[email protected]>
Signed-off-by: Mattijs Korpershoek <[email protected]>
Tested-by: Zixun LI <[email protected]> # on SAM9X60
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mattijs Korpershoek <[email protected]>

0 files changed, 0 insertions, 0 deletions