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staging: pi433: Return thread immediately when kthread_should_stop() call.

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When kthread_stop() called by removing module, running thread should
return immediately. Otherwise, It is very dangerous that thread may access
any released data like struct pi433_device.

Signed-off-by: Sidong Yang <realwakka@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sidong Yang 2019-04-02 12:14:31 +00:00 committed by Greg Kroah-Hartman
parent e7c3d05459
commit a35342d0f8
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/pi433/pi433_if.c
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@ -736,7 +736,7 @@ pi433_tx_thread(void *data)
device->free_in_fifo == FIFO_SIZE ||
kthread_should_stop());
if (kthread_should_stop())
dev_dbg(device->dev, "ABORT\n");
return 0;
/* STOP_TRANSMISSION */
dev_dbg(device->dev, "thread: Packet sent. Set mode to stby.");