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serial: doc: Use port->state instead of info 

As of commit ebd2c8f6d2 ("serial: kill off uart_info"), the
circular transmission buffer is part of struct uart_state instead of
struct uart_info. Make it clear this structure is pointed to from struct
uart_port.

Change 'circ' to 'circ_buf' to match the structure name while we're at
it.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Geert Uytterhoeven 2016-05-11 13:56:05 +02:00 committed by Jonathan Corbet
parent 95f981f2e3
commit b79ef07d20
1 changed files with 4 additions and 4 deletions
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8
Documentation/serial/driver
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@ -48,8 +48,8 @@ data:
port->mctrl
port->icount
info->xmit.head (circ->head)
info->xmit.tail (circ->tail)
port->state->xmit.head (circ_buf->head)
port->state->xmit.tail (circ_buf->tail)
The low level driver is free to use this lock to provide any additional
locking.
@ -204,7 +204,7 @@ hardware.
RTS nor DTR; this will have already been done via a separate
call to set_mctrl.
Drivers must not access port->info once this call has completed.
Drivers must not access port->state once this call has completed.
This method will only be called when there are no more users of
this port.
@ -216,7 +216,7 @@ hardware.
Flush any write buffers, reset any DMA state and stop any
ongoing DMA transfers.
This will be called whenever the port->info->xmit circular
This will be called whenever the port->state->xmit circular
buffer is cleared.
Locking: port->lock taken.