Backport of Renesas USBHS driver from v3.15-rc1 to LTSI-3.10.31
* Request DMAEngine once
usb: renesas_usbhs: fifo: request DMAEngine once
DMAEngine uses IRQ if dma_request_channel() was called,
and it is using devm_request_irq() today,
OTOH, dma_request_channel() will be called when each
USB connection happened on this driver.
This means same IRQ will be requested many times
whenever each USB connected,
and this IRQ isn't freed when USB disconnected.
Request DMAEngine once.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
(cherry picked from commit 1b2e21b082a1c67cd7861bd86c4a46a3f0f348ea)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
1 file changed
