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| author | Bill Richardson <wfrichar@chromium.org> | 2014-06-18 11:14:05 -0700 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2014-07-09 14:58:19 +0100 |
| commit | 6db07b6336589ff480528173e41f8f6af3f0097f (patch) | |
| tree | 306bf3f92d5bc8920c8ae668e3e8c93534351d85 /drivers/mfd/cros_ec.c | |
| parent | 5799f95a373a2752e5c732f531a6f40fe458b818 (diff) | |
| download | lwn-6db07b6336589ff480528173e41f8f6af3f0097f.tar.gz lwn-6db07b6336589ff480528173e41f8f6af3f0097f.zip | |
mfd: cros_ec: Check result code from EC messages
Just because the host was able to talk to the EC doesn't mean that the EC
was happy with what it was told. Errors in communincation are not the same
as error messages from the EC itself.
This change lets the EC report its errors separately.
[dianders: Added common function to cros_ec.c]
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/cros_ec.c')
| -rw-r--r-- | drivers/mfd/cros_ec.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c index 4851ed2fbe31..83e30c663578 100644 --- a/drivers/mfd/cros_ec.c +++ b/drivers/mfd/cros_ec.c @@ -44,6 +44,24 @@ int cros_ec_prepare_tx(struct cros_ec_device *ec_dev, } EXPORT_SYMBOL(cros_ec_prepare_tx); +int cros_ec_check_result(struct cros_ec_device *ec_dev, + struct cros_ec_command *msg) +{ + switch (msg->result) { + case EC_RES_SUCCESS: + return 0; + case EC_RES_IN_PROGRESS: + dev_dbg(ec_dev->dev, "command 0x%02x in progress\n", + msg->command); + return -EAGAIN; + default: + dev_dbg(ec_dev->dev, "command 0x%02x returned %d\n", + msg->command, msg->result); + return 0; + } +} +EXPORT_SYMBOL(cros_ec_check_result); + static irqreturn_t ec_irq_thread(int irq, void *data) { struct cros_ec_device *ec_dev = data; |