From: Fancy Fang <B47543@freescale.com>
Date: Tue, 17 Dec 2013 07:30:58 +0000 (+0800)
Subject: ENGR00292369 PXP: remove unnecessary head list empty check
X-Git-Tag: KARO-TX6-2014-07-10~104
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=22a1e2f07808962b42fb696ada2948bbd4847cd3;p=karo-tx-linux.git

ENGR00292369 PXP: remove unnecessary head list empty check

The head list empty check in function pxpdma_dostart_work()
is meaningless, since this function only can be called when
there is some pxp task in the head list, that is to say head
list is not empty.

Signed-off-by: Fancy Fang <B47543@freescale.com>
---

diff --git a/drivers/dma/pxp/pxp_dma_v2.c b/drivers/dma/pxp/pxp_dma_v2.c
index 9b6db2957023..9102dd6abeab 100644
--- a/drivers/dma/pxp/pxp_dma_v2.c
+++ b/drivers/dma/pxp/pxp_dma_v2.c
@@ -1112,11 +1112,6 @@ static void pxpdma_dostart_work(struct pxps *pxp)
 	struct pxp_tx_desc *desc = NULL;
 
 	spin_lock_irqsave(&pxp->lock, flags);
-	if (list_empty(&head)) {
-		pxp->pxp_ongoing = 0;
-		spin_unlock_irqrestore(&pxp->lock, flags);
-		return;
-	}
 
 	desc = list_entry(head.next, struct pxp_tx_desc, list);
 	pxp_chan = to_pxp_channel(desc->txd.chan);