From: Joerg Roedel <jroedel@xxxxxxx>
Remove the usage of of_parse_phandle_with_args() and replace
it by the phandle-iterator implementation to be able to
parse out all of the potentially present 128 stream-ids.
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
---
drivers/iommu/arm-smmu.c | 27 +++++++++++++++++++++------
1 file changed, 21 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 59ee4b8..d5d6a1d 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -48,7 +48,7 @@
#include "io-pgtable.h"
/* Maximum number of stream IDs assigned to a single device */
-#define MAX_MASTER_STREAMIDS MAX_PHANDLE_ARGS
+#define MAX_MASTER_STREAMIDS 128
/* Maximum number of context banks per SMMU */
#define ARM_SMMU_MAX_CBS 128
@@ -349,6 +349,12 @@ struct arm_smmu_domain {
struct iommu_domain domain;
};
+struct arm_smmu_phandle_args {
+ struct device_node *np;
+ int args_count;
+ uint32_t args[MAX_MASTER_STREAMIDS];
+};
+
static struct iommu_ops arm_smmu_ops;
static DEFINE_SPINLOCK(arm_smmu_devices_lock);
@@ -458,7 +464,7 @@ static int insert_smmu_master(struct arm_smmu_device *smmu,
static int register_smmu_master(struct arm_smmu_device *smmu,
struct device *dev,
- struct of_phandle_args *masterspec)
+ struct arm_smmu_phandle_args *masterspec)
{
int i;
struct arm_smmu_master *master;
@@ -1716,7 +1722,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
struct arm_smmu_device *smmu;
struct device *dev = &pdev->dev;
struct rb_node *node;
- struct of_phandle_args masterspec;
+ struct of_phandle_iterator it;
+ struct arm_smmu_phandle_args masterspec;
int num_irqs, i, err;
smmu = devm_kzalloc(dev, sizeof(*smmu), GFP_KERNEL);
@@ -1777,9 +1784,17 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
i = 0;
smmu->masters = RB_ROOT;
- while (!of_parse_phandle_with_args(dev->of_node, "mmu-masters",
- "#stream-id-cells", i,
- &masterspec)) {
+
+ err = of_phandle_iterator_init(&it, dev->of_node,
+ "mmu-masters", "#stream-id-cells", 0);
+ if (err)
+ goto out_put_masters;
+
+ while (!of_phandle_iterator_next(&it)) {
+ masterspec.np = of_phandle_iterator_node(&it);
+ masterspec.args_count = of_phandle_iterator_args(&it,
+ masterspec.args,
+ MAX_MASTER_STREAMIDS);
err = register_smmu_master(smmu, dev, &masterspec);
if (err) {
dev_err(dev, "failed to add master %s\n",
--
1.9.1
--
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