The attached patch observes the stir4200 fifo size and will clear the fifo, if the size is increasing, while it should be transmitting bytes From: Olaf Hartmann Signed-off-by: Samuel Ortiz --- drivers/net/irda/stir4200.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) Index: net-2.6/drivers/net/irda/stir4200.c =================================================================== --- net-2.6.orig/drivers/net/irda/stir4200.c 2007-11-25 05:53:43.000000000 +0100 +++ net-2.6/drivers/net/irda/stir4200.c 2007-11-26 02:16:12.000000000 +0100 @@ -142,9 +142,6 @@ }; enum StirFifoCtlMask { - FIFOCTL_EOF = 0x80, - FIFOCTL_UNDER = 0x40, - FIFOCTL_OVER = 0x20, FIFOCTL_DIR = 0x10, FIFOCTL_CLR = 0x08, FIFOCTL_EMPTY = 0x04, @@ -594,9 +591,10 @@ { int err; unsigned long count, status; + unsigned long prev_count = 0x1fff; /* Read FIFO status and count */ - for(;;) { + for (;; prev_count = count) { err = read_reg(stir, REG_FIFOCTL, stir->fifo_status, FIFO_REGS_SIZE); if (unlikely(err != FIFO_REGS_SIZE)) { @@ -629,6 +627,10 @@ if (space >= 0 && STIR_FIFO_SIZE - 4 > space + count) return 0; + /* queue confused */ + if (prev_count < count) + break; + /* estimate transfer time for remaining chars */ msleep((count * 8000) / stir->speed); } -- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html