diff options
author | Andrew Bresticker <abrestic@chromium.org> | 2014-09-18 15:18:57 (GMT) |
---|---|---|
committer | Lee Jones <lee.jones@linaro.org> | 2014-10-06 20:29:50 (GMT) |
commit | 63427530fa7a78b42a19f47fb0c12b303c0666ca (patch) | |
tree | 4187be312eb4d646c92b362cc958030975daf08a /drivers/mfd/cros_ec_spi.c | |
parent | a6551a76fff15056fde2342d0f7de41ee605264e (diff) | |
download | linux-63427530fa7a78b42a19f47fb0c12b303c0666ca.tar.xz |
mfd: cros_ec: move locking into cros_ec_cmd_xfer
Now that there's a central cros_ec_cmd_xfer(), move the locking
out of the SPI driver.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/cros_ec_spi.c')
-rw-r--r-- | drivers/mfd/cros_ec_spi.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c index b396705..bf6e08e 100644 --- a/drivers/mfd/cros_ec_spi.c +++ b/drivers/mfd/cros_ec_spi.c @@ -79,13 +79,11 @@ * if no record * @end_of_msg_delay: used to set the delay_usecs on the spi_transfer that * is sent when we want to turn off CS at the end of a transaction. - * @lock: mutex to ensure only one user of cros_ec_cmd_xfer_spi at a time */ struct cros_ec_spi { struct spi_device *spi; s64 last_transfer_ns; unsigned int end_of_msg_delay; - struct mutex lock; }; static void debug_packet(struct device *dev, const char *name, u8 *ptr, @@ -232,13 +230,6 @@ static int cros_ec_cmd_xfer_spi(struct cros_ec_device *ec_dev, int sum; int ret = 0, final_ret; - /* - * We have the shared ec_dev buffer plus we do lots of separate spi_sync - * calls, so we need to make sure only one person is using this at a - * time. - */ - mutex_lock(&ec_spi->lock); - len = cros_ec_prepare_tx(ec_dev, ec_msg); dev_dbg(ec_dev->dev, "prepared, len=%d\n", len); @@ -327,7 +318,6 @@ exit: if (ec_msg->command == EC_CMD_REBOOT_EC) msleep(EC_REBOOT_DELAY_MS); - mutex_unlock(&ec_spi->lock); return ret; } @@ -359,7 +349,6 @@ static int cros_ec_spi_probe(struct spi_device *spi) if (ec_spi == NULL) return -ENOMEM; ec_spi->spi = spi; - mutex_init(&ec_spi->lock); ec_dev = devm_kzalloc(dev, sizeof(*ec_dev), GFP_KERNEL); if (!ec_dev) return -ENOMEM; |