diff options
| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2022-11-16 14:47:34 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-23 19:43:33 +0100 |
| commit | 83f47eea742c1152c237398fc040ceba04fc5d76 (patch) | |
| tree | 523f3c402f976b746e9713aef4faba13aafaa025 /drivers/misc/mei/main.c | |
| parent | 6865788f5ad998f261e37f6b029d61d3bb7dc373 (diff) | |
mei: add timeout to send
When driver wakes up the firmware from the low power state,
it is sending a memory ready message.
The send is done via synchronous/blocking function to ensure
that firmware is in ready state. However, in case of firmware
undergoing reset send might be block forever.
To address this issue a timeout is added to blocking
write command on the internal bus.
Introduce the __mei_cl_send_timeout function to use instead of
__mei_cl_send in cases where timeout is required.
The mei_cl_write has only two callers and there is no need to split
it into two functions.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Link: https://lore.kernel.org/r/20221116124735.2493847-2-alexander.usyskin@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/main.c')
| -rw-r--r-- | drivers/misc/mei/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 930887e7e38d..632d4ae21e46 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -383,7 +383,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf, goto out; } - rets = mei_cl_write(cl, cb); + rets = mei_cl_write(cl, cb, MAX_SCHEDULE_TIMEOUT); out: mutex_unlock(&dev->device_lock); return rets; |