diff options
| author | Jeremy Kerr <jk@ozlabs.org> | 2018-05-24 11:29:56 +0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-12 14:05:28 +1000 |
| commit | 26d79b272d388e2180d93d01b4085208c028f79a (patch) | |
| tree | c055875bb46f3adc9c788049aa2fc5a9ab94e2f1 /drivers/xen | |
| parent | c49e34401a32acc05bafec2b3d28d8e58410724c (diff) | |
| download | linux-26d79b272d388e2180d93d01b4085208c028f79a.tar.bz2 | |
fsi/master-gpio: Replace bit_bit lock with IRQ disable/enable
We currently use a spinlock (bit_lock) around operations that clock bits
out of the FSI bus, and a mutex to protect against simultaneous access
to the master.
This means that bit_lock isn't needed for mutual exlusion, only to
prevent timing issues when clocking bits out.
To reflect this, this change converts bit_lock to just the
local_irq_save/restore operation.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'drivers/xen')
0 files changed, 0 insertions, 0 deletions