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| author | Petr Mladek <[email protected]> | 2021-11-02 09:39:27 +0000 |
|---|---|---|
| committer | Petr Mladek <[email protected]> | 2021-11-02 09:39:27 +0000 |
| commit | 40e64a88dadcfa168914065baf7f035de957bbe0 (patch) | |
| tree | 06c8c4a9e6c1b478aa6851794c6a33bec1ce6ec4 /drivers/platform/chrome/cros_ec_proto.c | |
| parent | lib/vsprintf.c: Amend static asserts for format specifier flags (diff) | |
| parent | vsprintf: Update %pGp documentation about that it prints hex value (diff) | |
| download | kernel-40e64a88dadcfa168914065baf7f035de957bbe0.tar.gz kernel-40e64a88dadcfa168914065baf7f035de957bbe0.zip | |
Merge branch 'for-5.16-vsprintf-pgp' into for-linus
Diffstat (limited to 'drivers/platform/chrome/cros_ec_proto.c')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_proto.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c index aa7f7aa77297..a7404d69b2d3 100644 --- a/drivers/platform/chrome/cros_ec_proto.c +++ b/drivers/platform/chrome/cros_ec_proto.c @@ -279,6 +279,15 @@ static int cros_ec_host_command_proto_query(struct cros_ec_device *ec_dev, msg->insize = sizeof(struct ec_response_get_protocol_info); ret = send_command(ec_dev, msg); + /* + * Send command once again when timeout occurred. + * Fingerprint MCU (FPMCU) is restarted during system boot which + * introduces small window in which FPMCU won't respond for any + * messages sent by kernel. There is no need to wait before next + * attempt because we waited at least EC_MSG_DEADLINE_MS. + */ + if (ret == -ETIMEDOUT) + ret = send_command(ec_dev, msg); if (ret < 0) { dev_dbg(ec_dev->dev, |