| commit | dccd573bb02aa011a4a7146c02c409ac0bd722a0 | |
| author | David Brownell <david-b@pacbell.net> | |
| Tue, 17 Jul 2007 11:04:02 +0000 (17 04:04 -0700) | ||
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | |
| Tue, 17 Jul 2007 17:23:04 +0000 (17 10:23 -0700) | ||
| tree | 743eeca4fbbea8272ca4f341b806d776e404d704 | treesnapshot (tar.gz zip) |
| parent | ff294cba8a62fa8334b88692da6d48683900f015 | commitdiff |
SPI controller drivers: check for unsupported modes
Minor SPI controller driver updates: make the setup() methods reject
spi->mode bits they don't support, by masking aginst the inverse of bits
they *do* support. This insures against misbehavior later when new mode
bits get added.
Most controllers can't support SPI_LSB_FIRST; more handle SPI_CS_HIGH.
Support for all four SPI clock/transfer modes is routine.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Minor SPI controller driver updates: make the setup() methods reject
spi->mode bits they don't support, by masking aginst the inverse of bits
they *do* support. This insures against misbehavior later when new mode
bits get added.
Most controllers can't support SPI_LSB_FIRST; more handle SPI_CS_HIGH.
Support for all four SPI clock/transfer modes is routine.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>