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| author |   Jody McIntyre <scjody@steamballoon.com> | 2005-09-30 11:59:18 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-30 12:41:19 -0700 |
| commit | 3ae3d0d4ae4131563d9eb55859f4fa5bd39059bd (patch) | |
| tree | ff2574f8b4191b99eaa1e14c2da15ad23ac2e785 /drivers/ieee1394/eth1394.h | |
| parent | [PATCH] ieee1394: remove superfluous include in csr1212 (diff) | |
| download | linux-dev-3ae3d0d4ae4131563d9eb55859f4fa5bd39059bd.tar.xz linux-dev-3ae3d0d4ae4131563d9eb55859f4fa5bd39059bd.zip | |
[PATCH] eth1394: workaround limitation in rawiso routines
Work around limitation in rawiso routines. Required with 1394b cards on
architectures where PAGE_SIZE is 4096. Based on a previous patch by Ben
Collins.
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Cc: Ben Collins <bcollins@debian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/ieee1394/eth1394.h')
| -rw-r--r-- | drivers/ieee1394/eth1394.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/ieee1394/eth1394.h b/drivers/ieee1394/eth1394.h index ed8f1c4b7fd8..a77213cfc483 100644 --- a/drivers/ieee1394/eth1394.h +++ b/drivers/ieee1394/eth1394.h @@ -44,6 +44,12 @@ #define ETHER1394_GASP_BUFFERS 16 +/* rawiso buffer size - due to a limitation in rawiso, we must limit each + * GASP buffer to be less than PAGE_SIZE. */ +#define ETHER1394_ISO_BUF_SIZE ETHER1394_GASP_BUFFERS * \ + min((unsigned int)PAGE_SIZE, \ + 2 * (1U << (priv->host->csr.max_rec + 1))) + /* Node set == 64 */ #define NODE_SET (ALL_NODES + 1) |