Messages in this thread | | | Date | Thu, 16 Jun 2016 16:30:32 +0100 | From | Lee Jones <> | Subject | Re: [PATCH v2 1/4] mfd: cros_ec: Add cros_ec_cmd_xfer_status helper |
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On Thu, 02 Jun 2016, Brian Norris wrote:
> From: Tomeu Vizoso <tomeu.vizoso@collabora.com> > > So that callers of cros_ec_cmd_xfer don't have to repeat boilerplate > code when checking for errors from the EC side. > > Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> > Reviewed-by: Benson Leung <bleung@chromium.org> > Signed-off-by: Brian Norris <briannorris@chromium.org> > --- > v2: no change > > drivers/platform/chrome/cros_ec_proto.c | 15 +++++++++++++++ > include/linux/mfd/cros_ec.h | 18 ++++++++++++++++++ > 2 files changed, 33 insertions(+) > > diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c > index b6e161f71b26..ecc544c728f0 100644 > --- a/drivers/platform/chrome/cros_ec_proto.c > +++ b/drivers/platform/chrome/cros_ec_proto.c > @@ -380,3 +380,18 @@ int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev, > return ret; > } > EXPORT_SYMBOL(cros_ec_cmd_xfer); > + > +int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev, > + struct cros_ec_command *msg) > +{ > + int ret; > + > + ret = cros_ec_cmd_xfer(ec_dev, msg); > + if (ret < 0) > + dev_err(ec_dev->dev, "Command xfer error (err:%d)\n", ret); > + else if (msg->result != EC_RES_SUCCESS) > + return -EECRESULT - msg->result; > + > + return ret; > +} > +EXPORT_SYMBOL(cros_ec_cmd_xfer_status); > diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h > index 64184d27e3cd..b1e48dfbf50a 100644 > --- a/include/linux/mfd/cros_ec.h > +++ b/include/linux/mfd/cros_ec.h > @@ -40,6 +40,9 @@ > #define EC_MAX_REQUEST_OVERHEAD 1 > #define EC_MAX_RESPONSE_OVERHEAD 2 > > +/* ec_command return value for non-success result from EC */ > +#define EECRESULT 1000 > + > /* > * Command interface between EC and AP, for LPC, I2C and SPI interfaces. > */ > @@ -226,6 +229,21 @@ int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev, > struct cros_ec_command *msg); > > /** > + * cros_ec_cmd_xfer_status - Send a command to the ChromeOS EC > + * > + * This function is identical to cros_ec_cmd_xfer, except it returns succes
s/succes/success/
I guess whoever takes this patch can do a quick fix-up job on it, so:
Acked-by: Lee Jones <lee.jones@linaro.org>
> + * status only if both the command was transmitted successfully and the EC > + * replied with success status. It's not necessary to check msg->result when > + * using this function. > + * > + * @ec_dev: EC device > + * @msg: Message to write > + * @return: Num. of bytes transferred on success, <0 on failure > + */ > +int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev, > + struct cros_ec_command *msg); > + > +/** > * cros_ec_remove - Remove a ChromeOS EC > * > * Call this to deregister a ChromeOS EC, then clean up any private data.
-- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
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