spi: davinci: fix DMA event generation stoppage

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Do not stop SPI DMA event generation in either transmit or
receive DMA event call back because the single setting affects
both transmit and receive event generation.

Depending on the order in which the callbacks happen, transmit
or receive events can get unintentionally stalled.

Instead, disable event generation once after both the transmit
and receive DMA completes.

While at it, remove the largely under-used function to set or
clear DMA event generation.

Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Tested-By: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

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Brian Niebuhr 2010-10-01 14:00:48 +05:30 • committed by Sekhar Nori

parent 49fc3f497d

commit a4f4497b86

1 changed files with 3 additions and 15 deletions

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drivers/spi/davinci_spi.c

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