X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fdma%2Fkeystone_nav.c;h=5a65b62a391a66b4147cd851c03d0672239a2c7a;hb=d2d9bdfcf9bdd6a39119c19c644189fccbe588cc;hp=77707c21098f45ca1c33d42470416717f8851f62;hpb=9ea9021ac466f5ccc8b6238cbce37428bb58f887;p=u-boot

diff --git a/drivers/dma/keystone_nav.c b/drivers/dma/keystone_nav.c
index 77707c2109..5a65b62a39 100644
--- a/drivers/dma/keystone_nav.c
+++ b/drivers/dma/keystone_nav.c
@@ -54,7 +54,7 @@ int _qm_init(struct qm_config *cfg)
 	qm_cfg = cfg;
 
 	qm_cfg->mngr_cfg->link_ram_base0	= qm_cfg->i_lram;
-	qm_cfg->mngr_cfg->link_ram_size0	= HDESC_NUM * 8;
+	qm_cfg->mngr_cfg->link_ram_size0	= HDESC_NUM * 8 - 1;
 	qm_cfg->mngr_cfg->link_ram_base1	= 0;
 	qm_cfg->mngr_cfg->link_ram_size1	= 0;
 	qm_cfg->mngr_cfg->link_ram_base2	= 0;
@@ -81,9 +81,6 @@ void qm_close(void)
 {
 	u32	j;
 
-	if (qm_cfg == NULL)
-		return;
-
 	queue_close(qm_cfg->qpool_num);
 
 	qm_cfg->mngr_cfg->link_ram_base0	= 0;
@@ -105,9 +102,6 @@ void qm_push(struct qm_host_desc *hd, u32 qnum)
 {
 	u32 regd;
 
-	if (!qm_cfg)
-		return;
-
 	cpu_to_bus((u32 *)hd, sizeof(struct qm_host_desc)/4);
 	regd = (u32)hd | ((sizeof(struct qm_host_desc) >> 4) - 1);
 	writel(regd, &qm_cfg->queue[qnum].ptr_size_thresh);
@@ -127,9 +121,6 @@ struct qm_host_desc *qm_pop(u32 qnum)
 {
 	u32 uhd;
 
-	if (!qm_cfg)
-		return NULL;
-
 	uhd = readl(&qm_cfg->queue[qnum].ptr_size_thresh) & ~0xf;
 	if (uhd)
 		cpu_to_bus((u32 *)uhd, sizeof(struct qm_host_desc)/4);
@@ -139,9 +130,6 @@ struct qm_host_desc *qm_pop(u32 qnum)
 
 struct qm_host_desc *qm_pop_from_free_pool(void)
 {
-	if (!qm_cfg)
-		return NULL;
-
 	return qm_pop(qm_cfg->qpool_num);
 }