diff options
| author | Marc Dietrich <marvin24@gmx.de> | 2024-04-06 14:31:19 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-11 13:59:19 +0200 |
| commit | 244b6e92bd1a0b6ff1f6253b10a96dc208a315f2 (patch) | |
| tree | 06abefaa18629d19a637038190a0805725ef81cc /drivers | |
| parent | staging: greybus: change strncpy() to strscpy_pad() (diff) | |
| download | linux-244b6e92bd1a0b6ff1f6253b10a96dc208a315f2.tar.xz linux-244b6e92bd1a0b6ff1f6253b10a96dc208a315f2.zip | |
staging: nvec: add ability to ignore EC responses in sync writes
In case we just want to submit a message to the EC but are not
interested in its response, we can free the response buffer early.
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Link: https://lore.kernel.org/r/20240406123123.37148-2-marvin24@gmx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/nvec/nvec.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c index b4485b10beb8..e5ca78e57384 100644 --- a/drivers/staging/nvec/nvec.c +++ b/drivers/staging/nvec/nvec.c @@ -300,7 +300,9 @@ int nvec_write_sync(struct nvec_chip *nvec, { mutex_lock(&nvec->sync_write_mutex); - *msg = NULL; + if (msg != NULL) + *msg = NULL; + nvec->sync_write_pending = (data[1] << 8) + data[0]; if (nvec_write_async(nvec, data, size) < 0) { @@ -320,7 +322,10 @@ int nvec_write_sync(struct nvec_chip *nvec, dev_dbg(nvec->dev, "nvec_sync_write: pong!\n"); - *msg = nvec->last_sync_msg; + if (msg != NULL) + *msg = nvec->last_sync_msg; + else + nvec_msg_free(nvec, nvec->last_sync_msg); mutex_unlock(&nvec->sync_write_mutex); |