SPDX: Convert all of our single license tags to Linux Kernel style

[u-boot] / drivers / dma / keystone_nav.c

diff --git a/drivers/dma/keystone_nav.c b/drivers/dma/keystone_nav.c
index 77707c21098f45ca1c33d42470416717f8851f62..3a151212004233af757732584b8369f67d80d908 100644 (file)
--- a/drivers/dma/keystone_nav.c
+++ b/drivers/dma/keystone_nav.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Multicore Navigator driver for TI Keystone 2 devices.
  *
  * (C) Copyright 2012-2014
  *     Texas Instruments Incorporated, <www.ti.com>
- *
- * SPDX-License-Identifier:     GPL-2.0+
  */
 #include <common.h>
 #include <asm/io.h>
@@ -54,7 +53,7 @@ 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 +80,6 @@ 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 +101,6 @@ 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 +120,6 @@ 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 +129,6 @@ 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);
 }