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| author | Joseph Lo <josephl@nvidia.com> | 2016-12-16 18:57:36 +0100 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2017-02-13 09:29:42 +0000 |
| commit | a9eb186e13144782232cc6fa731441be54baf505 (patch) | |
| tree | 84516b09ee9f92af21eec842db5cd9efb85df9dc /drivers/platform | |
| parent | 0f1747692ccc06fff9a5eb975b2a5cf92cec4030 (diff) | |
| download | linux-0-day-a9eb186e13144782232cc6fa731441be54baf505.tar.gz linux-0-day-a9eb186e13144782232cc6fa731441be54baf505.tar.xz | |
mfd: cros_ec: Prevent data transfer while device is suspended
The cros_ec driver is still active while the device is suspended.
Besides that, it also tries to transfer data even after the I2C host had
been suspended. This patch uses a simple flag to prevent this.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_proto.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c index 04053fe1e980b..ed5dee744c74d 100644 --- a/drivers/platform/chrome/cros_ec_proto.c +++ b/drivers/platform/chrome/cros_ec_proto.c @@ -447,6 +447,11 @@ static int get_next_event(struct cros_ec_device *ec_dev) struct cros_ec_command *msg = (struct cros_ec_command *)&buffer; int ret; + if (ec_dev->suspended) { + dev_dbg(ec_dev->dev, "Device suspended.\n"); + return -EHOSTDOWN; + } + msg->version = 0; msg->command = EC_CMD_GET_NEXT_EVENT; msg->insize = sizeof(ec_dev->event_data); |