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| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2012-03-22 21:00:53 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-03-27 01:03:27 +0100 |
| commit | 7b0e67f604e1829e5292e1ad7743eb18dc42ea7c (patch) | |
| tree | 48cb065f253ed6552e8e5805bba7647eb25a8ad7 /drivers/dma/mxs-dma.c | |
| parent | 1b15a5f93bbd9a6f5346cfa449720a7e32115f86 (diff) | |
| download | linux-7b0e67f604e1829e5292e1ad7743eb18dc42ea7c.tar.bz2 | |
mtd: docg3 add protection against concurrency
As docg3 is intolerant against reentrancy, especially
because of its weird register access (ie. a register read is
performed by a first register write), each access to the
docg3 IO space must be locked.
Lock the IO space with a mutex, shared by all chips on the
same cascade, as they all share the same IO space.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/dma/mxs-dma.c')
0 files changed, 0 insertions, 0 deletions