Fix the following sparse warnings:

ti-vpe/cal.c:387:26: warning: incorrect type in return expression (different 
address spaces)
ti-vpe/cal.c:459:26: warning: incorrect type in return expression (different 
address spaces)
ti-vpe/cal.c:503:27: warning: incorrect type in argument 6 (different address 
spaces)
ti-vpe/cal.c:509:47: warning: incorrect type in argument 6 (different address 
spaces)
ti-vpe/cal.c:518:47: warning: incorrect type in argument 6 (different address 
spaces)
ti-vpe/cal.c:526:31: warning: incorrect type in argument 6 (different address 
spaces)
ti-vpe/cal.c:1807:24: warning: Using plain integer as NULL pointer
ti-vpe/cal.c:1844:16: warning: Using plain integer as NULL pointer

Signed-off-by: Benoit Parrot <bpar...@ti.com>
---
 drivers/media/platform/ti-vpe/cal.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/media/platform/ti-vpe/cal.c 
b/drivers/media/platform/ti-vpe/cal.c
index 69ec79ba49ee..35fa1071c5b2 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -384,7 +384,7 @@ static struct cm_data *cm_create(struct cal_dev *dev)
        cm->base = devm_ioremap_resource(&pdev->dev, cm->res);
        if (IS_ERR(cm->base)) {
                cal_err(dev, "failed to ioremap\n");
-               return cm->base;
+               return ERR_CAST(cm->base);
        }
 
        cal_dbg(1, dev, "ioresource %s at %pa - %pa\n",
@@ -456,7 +456,7 @@ static struct cc_data *cc_create(struct cal_dev *dev, 
unsigned int core)
        cc->base = devm_ioremap_resource(&pdev->dev, cc->res);
        if (IS_ERR(cc->base)) {
                cal_err(dev, "failed to ioremap\n");
-               return cc->base;
+               return ERR_CAST(cc->base);
        }
 
        cal_dbg(1, dev, "ioresource %s at %pa - %pa\n",
@@ -500,13 +500,14 @@ static void cal_quickdump_regs(struct cal_dev *dev)
 {
        cal_info(dev, "CAL Registers @ 0x%pa:\n", &dev->res->start);
        print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
-                      dev->base, resource_size(dev->res), false);
+                      (__force const void *)dev->base,
+                      resource_size(dev->res), false);
 
        if (dev->ctx[0]) {
                cal_info(dev, "CSI2 Core 0 Registers @ %pa:\n",
                         &dev->ctx[0]->cc->res->start);
                print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
-                              dev->ctx[0]->cc->base,
+                              (__force const void *)dev->ctx[0]->cc->base,
                               resource_size(dev->ctx[0]->cc->res),
                               false);
        }
@@ -515,7 +516,7 @@ static void cal_quickdump_regs(struct cal_dev *dev)
                cal_info(dev, "CSI2 Core 1 Registers @ %pa:\n",
                         &dev->ctx[1]->cc->res->start);
                print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
-                              dev->ctx[1]->cc->base,
+                              (__force const void *)dev->ctx[1]->cc->base,
                               resource_size(dev->ctx[1]->cc->res),
                               false);
        }
@@ -523,7 +524,7 @@ static void cal_quickdump_regs(struct cal_dev *dev)
        cal_info(dev, "CAMERRX_Control Registers @ %pa:\n",
                 &dev->cm->res->start);
        print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
-                      dev->cm->base,
+                      (__force const void *)dev->cm->base,
                       resource_size(dev->cm->res), false);
 }
 
@@ -1804,7 +1805,7 @@ static struct cal_ctx *cal_create_instance(struct cal_dev 
*dev, int inst)
 
        ctx = devm_kzalloc(&dev->pdev->dev, sizeof(*ctx), GFP_KERNEL);
        if (!ctx)
-               return 0;
+               return NULL;
 
        /* save the cal_dev * for future ref */
        ctx->dev = dev;
@@ -1841,7 +1842,7 @@ free_hdl:
 unreg_dev:
        v4l2_device_unregister(&ctx->v4l2_dev);
 err_exit:
-       return 0;
+       return NULL;
 }
 
 static int cal_probe(struct platform_device *pdev)
-- 
1.8.5.1

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