Merge tag 'qcom-drivers-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into arm/drivers

Qualcomm ARM Based Driver Updates for v5.2

* Update MAINTAINERS for Andy Gross's new email address
* Add support for mmap in RMTFS
* Fixup for QMI to change txn wait to non-interruptible
* Fixup for error code in probe of cmd-db
* Fixup for slot number check in RMPH-RSC

* tag 'qcom-drivers-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  MAINTAINERS: Update email for Qualcomm SoC maintainer
  drivers: soc: qcom: rpmh-rsc: Correct check for slot number
  soc: qcom: cmd-db: Fix an error code in cmd_db_dev_probe()
  soc: qcom: qmi: Change txn wait to non-interruptible
  soc: qcom: rmtfs: Add support for mmap functionality

Signed-off-by: Olof Johansson <olof@lixom.net>

4 files changed, 26 insertions, 8 deletions

diff --git a/drivers/soc/qcom/cmd-db.c b/drivers/soc/qcom/cmd-db.c
index c701b3b010f1..f6c3d17b05c7 100644
--- a/drivers/soc/qcom/cmd-db.c
+++ b/drivers/soc/qcom/cmd-db.c
@@ -248,8 +248,8 @@ static int cmd_db_dev_probe(struct platform_device *pdev)
 	}
 
 	cmd_db_header = memremap(rmem->base, rmem->size, MEMREMAP_WB);
-	if (IS_ERR_OR_NULL(cmd_db_header)) {
-		ret = PTR_ERR(cmd_db_header);
+	if (!cmd_db_header) {
+		ret = -ENOMEM;
 		cmd_db_header = NULL;
 		return ret;
 	}
diff --git a/drivers/soc/qcom/qmi_interface.c b/drivers/soc/qcom/qmi_interface.c
index c239a28e503f..f9e309f0acd3 100644
--- a/drivers/soc/qcom/qmi_interface.c
+++ b/drivers/soc/qcom/qmi_interface.c
@@ -345,8 +345,7 @@ int qmi_txn_wait(struct qmi_txn *txn, unsigned long timeout)
 	struct qmi_handle *qmi = txn->qmi;
 	int ret;
 
-	ret = wait_for_completion_interruptible_timeout(&txn->completion,
-							timeout);
+	ret = wait_for_completion_timeout(&txn->completion, timeout);
 
 	mutex_lock(&qmi->txn_lock);
 	mutex_lock(&txn->lock);
@@ -354,9 +353,7 @@ int qmi_txn_wait(struct qmi_txn *txn, unsigned long timeout)
 	mutex_unlock(&txn->lock);
 	mutex_unlock(&qmi->txn_lock);
 
-	if (ret < 0)
-		return ret;
-	else if (ret == 0)
+	if (ret == 0)
 		return -ETIMEDOUT;
 	else
 		return txn->result;
diff --git a/drivers/soc/qcom/rmtfs_mem.c b/drivers/soc/qcom/rmtfs_mem.c
index 7200d762a951..6f5e8be9689c 100644
--- a/drivers/soc/qcom/rmtfs_mem.c
+++ b/drivers/soc/qcom/rmtfs_mem.c
@@ -137,6 +137,26 @@ static struct class rmtfs_class = {
 	.name           = "rmtfs",
 };
 
+static int qcom_rmtfs_mem_mmap(struct file *filep, struct vm_area_struct *vma)
+{
+	struct qcom_rmtfs_mem *rmtfs_mem = filep->private_data;
+
+	if (vma->vm_end - vma->vm_start > rmtfs_mem->size) {
+		dev_dbg(&rmtfs_mem->dev,
+			"vm_end[%lu] - vm_start[%lu] [%lu] > mem->size[%pa]\n",
+			vma->vm_end, vma->vm_start,
+			(vma->vm_end - vma->vm_start), &rmtfs_mem->size);
+		return -EINVAL;
+	}
+
+	vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+	return remap_pfn_range(vma,
+			       vma->vm_start,
+			       rmtfs_mem->addr >> PAGE_SHIFT,
+			       vma->vm_end - vma->vm_start,
+			       vma->vm_page_prot);
+}
+
 static const struct file_operations qcom_rmtfs_mem_fops = {
 	.owner = THIS_MODULE,
 	.open = qcom_rmtfs_mem_open,
@@ -144,6 +164,7 @@ static const struct file_operations qcom_rmtfs_mem_fops = {
 	.write = qcom_rmtfs_mem_write,
 	.release = qcom_rmtfs_mem_release,
 	.llseek = default_llseek,
+	.mmap = qcom_rmtfs_mem_mmap,
 };
 
 static void qcom_rmtfs_mem_release_device(struct device *dev)
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index 75bd9a83aef0..e278fc11fe5c 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -459,7 +459,7 @@ static int find_slots(struct tcs_group *tcs, const struct tcs_request *msg,
 	do {
 		slot = bitmap_find_next_zero_area(tcs->slots, MAX_TCS_SLOTS,
 						  i, msg->num_cmds, 0);
-		if (slot == tcs->num_tcs * tcs->ncpt)
+		if (slot >= tcs->num_tcs * tcs->ncpt)
 			return -ENOMEM;
 		i += tcs->ncpt;
 	} while (slot + msg->num_cmds - 1 >= i);