| commit | d8cb04b070c2a55f7201714d231cff4f8f9fbd16 | |
| author | Nicolas Ferre <nicolas.ferre@atmel.com> | |
| Wed, 27 Jul 2011 12:21:28 +0000 (27 12:21 +0000) | ||
| committer | Vinod Koul <vinod.koul@intel.com> | |
| Fri, 19 Aug 2011 13:09:48 +0000 (19 18:39 +0530) | ||
| tree | cf5e6ee10c1e05ef0c61cc3bd2fa2538dfba2756 | treesnapshot (tar.gz zip) |
| parent | ef298c21c0d9c06ed89ea2fa724c3a018acfff39 | commitdiff |
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>
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>
| drivers/dma/at_hdmac.c | diffblobblamehistory |