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ASoC: SOF: fix race in FW boot timeout handling

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A race condition exists in handling firmware boot timeout.
If FW sends FW_READY just after boot timeout has expired in
driver, a kernel exception will result as FW_READY handler
will be run while the state is still being cleaned up in
snd_sof_run_firmware(). Avoid the race by setting
boot_complete also in the error case.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
This commit is contained in:
Kai Vehmanen 2019-05-02 17:45:16 +03:00 committed by Pierre Bossart
parent 3f6a2dfc6b
commit 1071743ab1
1 changed files with 2 additions and 0 deletions
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2
sound/soc/sof/loader.c
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@ -372,6 +372,8 @@ int snd_sof_run_firmware(struct snd_sof_dev *sdev)
msecs_to_jiffies(sdev->boot_timeout));
if (ret == 0) {
dev_err(sdev->dev, "error: firmware boot failure\n");
/* after this point FW_READY msg should be ignored */
sdev->boot_complete = true;
snd_sof_dsp_dbg_dump(sdev, SOF_DBG_REGS | SOF_DBG_MBOX |
SOF_DBG_TEXT | SOF_DBG_PCI);
return -EIO;