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| author | Jozef Martiniak <jomajm@gmail.com> | 2022-07-08 10:06:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-25 12:45:43 +0300 |
| commit | 2b06d5d97c0e067108a122986767731d40742138 (patch) | |
| tree | 6a7f3e14975a4a3e0fca5abd94f5c34efd3159b0 | |
| parent | 4eb7a1beff03836d3df271cd23b790884e3facb9 (diff) | |
| download | linux-2b06d5d97c0e067108a122986767731d40742138.tar.xz | |
gadgetfs: ep_io - wait until IRQ finishes
[ Upstream commit 04cb742d4d8f30dc2e83b46ac317eec09191c68e ]
after usb_ep_queue() if wait_for_completion_interruptible() is
interrupted we need to wait until IRQ gets finished.
Otherwise complete() from epio_complete() can corrupt stack.
Signed-off-by: Jozef Martiniak <jomajm@gmail.com>
Link: https://lore.kernel.org/r/20220708070645.6130-1-jomajm@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/usb/gadget/legacy/inode.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 79990597c39f..01c3ead7d1b4 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -362,6 +362,7 @@ ep_io (struct ep_data *epdata, void *buf, unsigned len) spin_unlock_irq (&epdata->dev->lock); DBG (epdata->dev, "endpoint gone\n"); + wait_for_completion(&done); epdata->status = -ENODEV; } } |