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authorDamien.Horsley <Damien.Horsley@imgtec.com>2015-12-10 15:07:23 +0000
committerVinod Koul <vinod.koul@intel.com>2015-12-18 11:12:29 +0530
commit0c328de77148ddccaa7a2c31f5751e4d443c213b (patch)
tree9f44db2ab2fd46006f971b7c88a13cdbd24e7227 /drivers/pwm
parent4fa2d09c1ae879c2ee2760ab419a4f97026dd97b (diff)
dmaengine: mdc: Correct terminate_all handling
Use of the CANCEL bit in mdc_terminate_all creates an additional 'command done' to appear in the registers (in addition to an interrupt). In addition, there is a potential race between mdc_terminate_all and the irq handler if a transfer completes at the same time as the terminate all (presently this results in an inappropriate warning). To handle these issues, any outstanding 'command done' events are cleared during mdc_terminate_all and the irq handler takes no action when there are no new 'command done' events. Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/pwm')
0 files changed, 0 insertions, 0 deletions