diff options
| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2022-11-16 15:47:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-23 21:43:33 +0300 |
| commit | 83f47eea742c1152c237398fc040ceba04fc5d76 (patch) | |
| tree | 523f3c402f976b746e9713aef4faba13aafaa025 /drivers/misc/mei/mei_dev.h | |
| parent | 6865788f5ad998f261e37f6b029d61d3bb7dc373 (diff) | |
| download | linux-83f47eea742c1152c237398fc040ceba04fc5d76.tar.xz | |
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/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 6bb3e1ba9ded..c1618a44c5a4 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -373,6 +373,8 @@ void mei_cl_bus_rescan_work(struct work_struct *work); void mei_cl_bus_dev_fixup(struct mei_cl_device *dev); ssize_t __mei_cl_send(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag, unsigned int mode); +ssize_t __mei_cl_send_timeout(struct mei_cl *cl, const u8 *buf, size_t length, u8 vtag, + unsigned int mode, unsigned long timeout); ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length, u8 *vtag, unsigned int mode, unsigned long timeout); bool mei_cl_bus_rx_event(struct mei_cl *cl); |