[PATCH v3 4/5] dmaengine: at_hdmac: remove channel status testing in tasklet

From: Nicolas Ferre
Date: Sat Apr 30 2011 - 09:51:56 EST


There is no need to test if channel is enabled in tasklet:
- in error path, channel is disabled in interrupt routine
- in normal path, this test is performed in sub functions to report
a misuse of the engine.

Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
---
drivers/dma/at_hdmac.c | 7 -------
1 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 8f50a0f..65bd52a 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -472,13 +472,6 @@ static void atc_tasklet(unsigned long data)
{
struct at_dma_chan *atchan = (struct at_dma_chan *)data;

- /* Channel cannot be enabled here */
- if (atc_chan_is_enabled(atchan)) {
- dev_err(chan2dev(&atchan->chan_common),
- "BUG: channel enabled in tasklet\n");
- return;
- }
-
spin_lock(&atchan->lock);
if (test_and_clear_bit(ATC_IS_ERROR, &atchan->status))
atc_handle_error(atchan);
--
1.7.3

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