-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, 18 Dec 2007, Haavard Skinnemoen wrote:
> From: Chip Coldwell <[EMAIL PROTECTED]> > > This patch is based on the DMA-patch by Chip Coldwell for the > AT91/AT32 serial USARTS, with some tweaks to make it apply neatly on > top of the other patches in this series. > > The RX code has been moved to a tasklet and reworked a bit. Instead of > depending on the ENDRX and TIMEOUT bits in CSR, we simply grab as much > data as we can from the DMA buffers. I think this closes a race where > the ENDRX bit is set after we read CSR but before we read RPR, > although I haven't confirmed this. > > This also fixes a DMA sync bug in the original patch. > > [EMAIL PROTECTED]: rebased onto irq-splitup patch] > [EMAIL PROTECTED]: moved to tasklet, fixed dma bug, misc cleanups] > Signed-off-by: Remy Bohmer <[EMAIL PROTECTED]> > Signed-off-by: Haavard Skinnemoen <[EMAIL PROTECTED]> > --- > drivers/serial/atmel_serial.c | 386 ++++++++++++++++++++++++++++++++++++++-- > 1 files changed, 366 insertions(+), 20 deletions(-) > > diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c > index 990d3ab..07c2734 100644 > --- a/drivers/serial/atmel_serial.c > +++ b/drivers/serial/atmel_serial.c > @@ -7,6 +7,8 @@ > * Based on drivers/char/serial_sa1100.c, by Deep Blue Solutions Ltd. > * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. > * > + * DMA support added by Chip Coldwell. I will ACK/Sign-off on this soon; I just want to do some tests on real hardware first. Chip - -- Charles M. Coldwell "Turn on, log in, tune out" Somerville, Massachusetts, New England -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQFHaA7cr6maj4UuBS8RAjMSAJsGcKoFKCP/R3aAPhW5hj+v3Qt6ZACgshsF 5NP6/9+NbhDAxBC/7jo8J0Y= =hx4t -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
