remoteproc: k3-r5: Use devm_ioremap_wc() helper

[ Upstream commit a572439f7143db5ea8446b7d755a16dfb12da7c7 ]

Use a device lifecycle managed ioremap helper function. This helps
prevent mistakes like unmapping out of order in cleanup functions and
forgetting to unmap on all error paths.

Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Reviewed-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20241219110545.1898883-4-b-padhi@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Stable-dep-of: 701177511abd ("remoteproc: k3-r5: Refactor sequential core power up/down operations")
Signed-off-by: Sasha Levin <sashal@kernel.org>

1 files changed, 8 insertions, 30 deletions

diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index c730ba09b92c..c38b76b4943d 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -996,17 +996,13 @@ static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
 	/* use remaining reserved memory regions for static carveouts */
 	for (i = 0; i < num_rmems; i++) {
 		rmem_np = of_parse_phandle(np, "memory-region", i + 1);
-		if (!rmem_np) {
-			ret = -EINVAL;
-			goto unmap_rmem;
-		}
+		if (!rmem_np)
+			return -EINVAL;
 
 		rmem = of_reserved_mem_lookup(rmem_np);
 		of_node_put(rmem_np);
-		if (!rmem) {
-			ret = -EINVAL;
-			goto unmap_rmem;
-		}
+		if (!rmem)
+			return -EINVAL;
 
 		kproc->rmem[i].bus_addr = rmem->base;
 		/*
@@ -1021,12 +1017,11 @@ static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
 		 */
 		kproc->rmem[i].dev_addr = (u32)rmem->base;
 		kproc->rmem[i].size = rmem->size;
-		kproc->rmem[i].cpu_addr = ioremap_wc(rmem->base, rmem->size);
+		kproc->rmem[i].cpu_addr = devm_ioremap_wc(dev, rmem->base, rmem->size);
 		if (!kproc->rmem[i].cpu_addr) {
 			dev_err(dev, "failed to map reserved memory#%d at %pa of size %pa\n",
 				i + 1, &rmem->base, &rmem->size);
-			ret = -ENOMEM;
-			goto unmap_rmem;
+			return -ENOMEM;
 		}
 
 		dev_dbg(dev, "reserved memory%d: bus addr %pa size 0x%zx va %pK da 0x%x\n",
@@ -1037,19 +1032,6 @@ static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
 	kproc->num_rmems = num_rmems;
 
 	return 0;
-
-unmap_rmem:
-	for (i--; i >= 0; i--)
-		iounmap(kproc->rmem[i].cpu_addr);
-	return ret;
-}
-
-static void k3_r5_reserved_mem_exit(struct k3_r5_rproc *kproc)
-{
-	int i;
-
-	for (i = 0; i < kproc->num_rmems; i++)
-		iounmap(kproc->rmem[i].cpu_addr);
 }
 
 /*
@@ -1278,8 +1260,8 @@ init_rmem:
 
 		ret = rproc_add(rproc);
 		if (ret) {
-			dev_err(dev, "rproc_add failed, ret = %d\n", ret);
-			goto err_add;
+			dev_err_probe(dev, ret, "rproc_add failed\n");
+			goto out;
 		}
 
 		/* create only one rproc in lockstep, single-cpu or
@@ -1325,8 +1307,6 @@ err_split:
 
 err_powerup:
 	rproc_del(rproc);
-err_add:
-	k3_r5_reserved_mem_exit(kproc);
 out:
 	/* undo core0 upon any failures on core1 in split-mode */
 	if (cluster->mode == CLUSTER_MODE_SPLIT && core == core1) {
@@ -1371,8 +1351,6 @@ static void k3_r5_cluster_rproc_exit(void *data)
 		mbox_free_channel(kproc->mbox);
 
 		rproc_del(rproc);
-
-		k3_r5_reserved_mem_exit(kproc);
 	}
 }