Messages in this thread Patch in this message | | | Date | Mon, 11 Jun 2007 00:52:18 -0400 | From | Jeff Garzik <> | Subject | Re: [PATCH] pata_it821x: (partially) fix DMA in RAID mode |
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Bartlomiej Zolnierkiewicz wrote: > Code intended to check DMA status was checking DMA command register. > > Moreover firmware seems to "forget" to set DMA capable bit for the > slave device (at least in RAID mode but without ITE RAID volumes) so > check device ID for DMA capable bit when deciding whether to use DMA > and remove DMA status check completely. > > Thanks to Pavol Šimo for the bugreport and testing the initial fix. > > This change unfortunately still doesn't fix DMA in RAID mode (which > works fine with IDE it821x) but Alan is working on the missing pieces > (pata_it821x vs libata EH issues). > > Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> > Cc: Tejun Heo <htejun@gmail.com> > Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> > --- > > drivers/ata/pata_it821x.c | 11 +++-------- > 1 file changed, 3 insertions(+), 8 deletions(-)
Patch is OK but it's mangled by your mailer:
@@ -79,7 +80,7 @@ =20 =20 #define DRV_NAME "pata_it821x" =2D#define DRV_VERSION "0.3.6" +#define DRV_VERSION "0.3.7" =20 struct it821x_dev { @@ -460,14 +461,8 @@ static unsigned int it821x_passthru_qc_i =20
=2D int dma_enabled =3D 0; int i; =20
etc.
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