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altera_tse: Clear SGDMA's RUN bit in async transfer, like in sync case
author
Joachim Foerster
<joachim.foerster@missinglinkelectronics.com>
Tue, 25 Oct 2011 22:39:54 +0000
(22:39 +0000)
committer
Wolfgang Denk
<wd@denx.de>
Wed, 26 Oct 2011 19:25:42 +0000
(21:25 +0200)
Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
drivers/net/altera_tse.c
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diff --git
a/drivers/net/altera_tse.c
b/drivers/net/altera_tse.c
index 54a944bfc4f221df510d55eb497f5b97f2884ed6..47d0047fd6fc572bb78dff6e34ba4c5e6cb0f1e2 100644
(file)
--- a/
drivers/net/altera_tse.c
+++ b/
drivers/net/altera_tse.c
@@
-198,6
+198,12
@@
static int alt_sgdma_do_async_transfer(volatile struct alt_sgdma_registers *dev,
if (counter >= ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
debug("Timeout waiting sgdma in do async!\n");
+ /*
+ * Clear the RUN bit in the control register. This is needed
+ * to restart the SGDMA engine later on.
+ */
+ dev->control = 0;
+
/*
* Clear any (previous) status register information
* that might occlude our error checking later.