diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-18 21:27:12 +0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-18 21:27:12 +0400 |
commit | 9d265649a86c6c0e4bae164a4c5ce806f0f12fc8 (patch) | |
tree | a782d3ffe0a171e540fdda19764ab81e11cb1a4c /drivers/i2c/busses/i2c-mv64xxx.c | |
parent | 6d36b6f313738e99fc8b903697f8ecf06add29aa (diff) | |
parent | 6d0abeca3242a88cab8232e4acd7e2bf088f3bc2 (diff) | |
download | linux-9d265649a86c6c0e4bae164a4c5ce806f0f12fc8.tar.xz |
Merge 3.14-rc3 into usb-next
We want the fixes in this branch as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-mv64xxx.c')
-rw-r--r-- | drivers/i2c/busses/i2c-mv64xxx.c | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index b8c5187b9ee0..d52d84937ad3 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -97,7 +97,6 @@ enum { enum { MV64XXX_I2C_ACTION_INVALID, MV64XXX_I2C_ACTION_CONTINUE, - MV64XXX_I2C_ACTION_OFFLOAD_SEND_START, MV64XXX_I2C_ACTION_SEND_START, MV64XXX_I2C_ACTION_SEND_RESTART, MV64XXX_I2C_ACTION_OFFLOAD_RESTART, @@ -204,6 +203,9 @@ static int mv64xxx_i2c_offload_msg(struct mv64xxx_i2c_data *drv_data) unsigned long ctrl_reg; struct i2c_msg *msg = drv_data->msgs; + if (!drv_data->offload_enabled) + return -EOPNOTSUPP; + drv_data->msg = msg; drv_data->byte_posn = 0; drv_data->bytes_left = msg->len; @@ -433,8 +435,7 @@ mv64xxx_i2c_do_action(struct mv64xxx_i2c_data *drv_data) drv_data->msgs++; drv_data->num_msgs--; - if (!(drv_data->offload_enabled && - mv64xxx_i2c_offload_msg(drv_data))) { + if (mv64xxx_i2c_offload_msg(drv_data) < 0) { drv_data->cntl_bits |= MV64XXX_I2C_REG_CONTROL_START; writel(drv_data->cntl_bits, drv_data->reg_base + drv_data->reg_offsets.control); @@ -458,15 +459,14 @@ mv64xxx_i2c_do_action(struct mv64xxx_i2c_data *drv_data) drv_data->reg_base + drv_data->reg_offsets.control); break; - case MV64XXX_I2C_ACTION_OFFLOAD_SEND_START: - if (!mv64xxx_i2c_offload_msg(drv_data)) - break; - else - drv_data->action = MV64XXX_I2C_ACTION_SEND_START; - /* FALLTHRU */ case MV64XXX_I2C_ACTION_SEND_START: - writel(drv_data->cntl_bits | MV64XXX_I2C_REG_CONTROL_START, - drv_data->reg_base + drv_data->reg_offsets.control); + /* Can we offload this msg ? */ + if (mv64xxx_i2c_offload_msg(drv_data) < 0) { + /* No, switch to standard path */ + mv64xxx_i2c_prepare_for_io(drv_data, drv_data->msgs); + writel(drv_data->cntl_bits | MV64XXX_I2C_REG_CONTROL_START, + drv_data->reg_base + drv_data->reg_offsets.control); + } break; case MV64XXX_I2C_ACTION_SEND_ADDR_1: @@ -625,15 +625,10 @@ mv64xxx_i2c_execute_msg(struct mv64xxx_i2c_data *drv_data, struct i2c_msg *msg, unsigned long flags; spin_lock_irqsave(&drv_data->lock, flags); - if (drv_data->offload_enabled) { - drv_data->action = MV64XXX_I2C_ACTION_OFFLOAD_SEND_START; - drv_data->state = MV64XXX_I2C_STATE_WAITING_FOR_START_COND; - } else { - mv64xxx_i2c_prepare_for_io(drv_data, msg); - drv_data->action = MV64XXX_I2C_ACTION_SEND_START; - drv_data->state = MV64XXX_I2C_STATE_WAITING_FOR_START_COND; - } + drv_data->action = MV64XXX_I2C_ACTION_SEND_START; + drv_data->state = MV64XXX_I2C_STATE_WAITING_FOR_START_COND; + drv_data->send_stop = is_last; drv_data->block = 1; mv64xxx_i2c_do_action(drv_data); |