TTY: switch tty_buffer_request_room to tty_port
Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty pointer in many call sites. Only tty_port will be needed and hence no more tty_port_tty_get calls in those paths. Here we start with tty_buffer_request_room. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
这个提交包含在:
@@ -629,7 +629,7 @@ int hvc_poll(struct hvc_struct *hp)
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/* Read data if any */
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for (;;) {
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int count = tty_buffer_request_room(tty, N_INBUF);
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int count = tty_buffer_request_room(&hp->port, N_INBUF);
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/* If flip is full, just reschedule a later read */
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if (count == 0) {
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@@ -609,7 +609,7 @@ static int hvcs_io(struct hvcs_struct *hvcsd)
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/* remove the read masks */
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hvcsd->todo_mask &= ~(HVCS_READ_MASK);
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if (tty_buffer_request_room(tty, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
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if (tty_buffer_request_room(&hvcsd->port, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
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got = hvc_get_chars(unit_address,
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&buf[0],
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HVCS_BUFF_LEN);
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