1. 31 Aug, 2005 1 commit
    • Russell King's avatar
      [SERIAL] Clean up and fix tty transmission start/stoping · b129a8cc
      Russell King authored
      The start_tx and stop_tx methods were passed a flag to indicate
      whether the start/stop was from the tty start/stop callbacks, and
      some drivers used this flag to decide whether to ask the UART to
      immediately stop transmission (where the UART supports such a
      feature.)
      
      There are other cases when we wish this to occur - when CTS is
      lowered, or if we change from soft to hard flow control and CTS
      is inactive.  In these cases, this flag was false, and we would
      allow the transmitter to drain before stopping.
      
      There is really only one case where we want to let the transmitter
      drain before disabling, and that's when we run out of characters
      to send.
      
      Hence, re-jig the start_tx and stop_tx methods to eliminate this
      flag, and introduce new functions for the special "disable and
      allow transmitter to drain" case.
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      b129a8cc
  2. 30 Aug, 2005 39 commits