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| 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/client.h | |
| parent | 6865788f5ad998f261e37f6b029d61d3bb7dc373 (diff) | |
| download | linux-stable-83f47eea742c1152c237398fc040ceba04fc5d76.tar.gz linux-stable-83f47eea742c1152c237398fc040ceba04fc5d76.tar.bz2 linux-stable-83f47eea742c1152c237398fc040ceba04fc5d76.zip | |
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/client.h')
| -rw-r--r-- | drivers/misc/mei/client.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h index 418056fb1489..9052860bcfe0 100644 --- a/drivers/misc/mei/client.h +++ b/drivers/misc/mei/client.h @@ -246,7 +246,7 @@ int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl, int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb, struct list_head *cmpl_list); int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp); -ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb); +ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, unsigned long timeout); int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, struct list_head *cmpl_list); |