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| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2011-07-27 16:21:28 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-08-19 17:09:48 +0400 |
| commit | d8cb04b070c2a55f7201714d231cff4f8f9fbd16 (patch) | |
| tree | cf5e6ee10c1e05ef0c61cc3bd2fa2538dfba2756 /drivers/dma/at_hdmac_regs.h | |
| parent | ef298c21c0d9c06ed89ea2fa724c3a018acfff39 (diff) | |
| download | linux-d8cb04b070c2a55f7201714d231cff4f8f9fbd16.tar.xz | |
dmaengine: at_hdmac: replace spin_lock* with irqsave variants
dmaengine routines can be called from interrupt context and with
interrupts disabled. Whereas spin_unlock_bh can't be called from
such contexts. So this patch converts all spin_lock* routines
to irqsave variants.
Also, spin_lock() used in tasklet is converted to irqsave variants,
as tasklet can be interrupted, and dma requests from such interruptions
may also call spin_lock.
Idea from dw_dmac patch by Viresh Kumar.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/at_hdmac_regs.h')
0 files changed, 0 insertions, 0 deletions