From: Radu Bacrau <[email protected]>
Extend Intel Remote System Update (RSU) driver to get SPT
(Sub-Partition Table) addresses. The query SPT address can be used
to determine if the RSU QSPI layout is 32kB or 64kB aligned.
The alignment can be determined by minus the upper with the lower of
the SPT addresses.
This patch depends on patch:
firmware: stratix10-svc: Generic Mailbox Command
Signed-off-by: Radu Bacrau <[email protected]>
Signed-off-by: Kah Jing Lee <[email protected]>
---
drivers/firmware/stratix10-rsu.c | 100 ++++++++++++++++++++++++++++++-
1 file changed, 99 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/stratix10-rsu.c b/drivers/firmware/stratix10-rsu.c
index e51c95f8d445..9f82d5147890 100644
--- a/drivers/firmware/stratix10-rsu.c
+++ b/drivers/firmware/stratix10-rsu.c
@@ -34,6 +34,10 @@
#define INVALID_RETRY_COUNTER 0xFF
#define INVALID_DCMF_VERSION 0xFF
#define INVALID_DCMF_STATUS 0xFFFFFFFF
+#define INVALID_SPT_ADDRESS 0x0
+
+#define RSU_GET_SPT_CMD 0x5A
+#define RSU_GET_SPT_RESP_LEN (4 * sizeof(unsigned int))
typedef void (*rsu_callback)(struct stratix10_svc_client *client,
struct stratix10_svc_cb_data *data);
@@ -59,6 +63,9 @@ typedef void (*rsu_callback)(struct stratix10_svc_client *client,
* @dcmf_status.dcmf3: dcmf3 status
* @retry_counter: the current image's retry counter
* @max_retry: the preset max retry value
+ * @spt0_address: address of spt0
+ * @spt1_address: address of spt1
+ * @get_spt_response_buf: response from sdm for get_spt command
*/
struct stratix10_rsu_priv {
struct stratix10_svc_chan *chan;
@@ -90,6 +97,11 @@ struct stratix10_rsu_priv {
unsigned int retry_counter;
unsigned int max_retry;
+
+ unsigned long spt0_address;
+ unsigned long spt1_address;
+
+ unsigned int *get_spt_response_buf;
};
/**
@@ -259,6 +271,36 @@ static void rsu_dcmf_status_callback(struct stratix10_svc_client *client,
complete(&priv->completion);
}
+static void rsu_get_spt_callback(struct stratix10_svc_client *client,
+ struct stratix10_svc_cb_data *data)
+{
+ struct stratix10_rsu_priv *priv = client->priv;
+ unsigned long *mbox_err = (unsigned long *)data->kaddr1;
+ unsigned long *resp_len = (unsigned long *)data->kaddr2;
+
+ if ((data->status != BIT(SVC_STATUS_OK)) || (*mbox_err) ||
+ (*resp_len != RSU_GET_SPT_RESP_LEN))
+ goto error;
+
+ priv->spt0_address = priv->get_spt_response_buf[0];
+ priv->spt0_address <<= 32;
+ priv->spt0_address |= priv->get_spt_response_buf[1];
+
+ priv->spt1_address = priv->get_spt_response_buf[2];
+ priv->spt1_address <<= 32;
+ priv->spt1_address |= priv->get_spt_response_buf[3];
+
+ goto complete;
+
+error:
+ dev_err(client->dev, "failed to get SPTs\n");
+
+complete:
+ stratix10_svc_free_memory(priv->chan, priv->get_spt_response_buf);
+ priv->get_spt_response_buf = NULL;
+ complete(&priv->completion);
+}
+
/**
* rsu_send_msg() - send a message to Intel service layer
* @priv: pointer to rsu private data
@@ -288,6 +330,14 @@ static int rsu_send_msg(struct stratix10_rsu_priv *priv,
if (arg)
msg.arg[0] = arg;
+ if (command == COMMAND_MBOX_SEND_CMD) {
+ msg.arg[1] = 0;
+ msg.payload = NULL;
+ msg.payload_length = 0;
+ msg.payload_output = priv->get_spt_response_buf;
+ msg.payload_length_output = RSU_GET_SPT_RESP_LEN;
+ }
+
ret = stratix10_svc_send(priv->chan, &msg);
if (ret < 0)
goto status_done;
@@ -572,6 +622,34 @@ static ssize_t notify_store(struct device *dev,
return count;
}
+static ssize_t spt0_address_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
+
+ if (!priv)
+ return -ENODEV;
+
+ if (priv->spt0_address == INVALID_SPT_ADDRESS)
+ return -EIO;
+
+ return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt0_address);
+}
+
+static ssize_t spt1_address_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
+
+ if (!priv)
+ return -ENODEV;
+
+ if (priv->spt1_address == INVALID_SPT_ADDRESS)
+ return -EIO;
+
+ return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt1_address);
+}
+
static DEVICE_ATTR_RO(current_image);
static DEVICE_ATTR_RO(fail_image);
static DEVICE_ATTR_RO(state);
@@ -590,6 +668,8 @@ static DEVICE_ATTR_RO(dcmf2_status);
static DEVICE_ATTR_RO(dcmf3_status);
static DEVICE_ATTR_WO(reboot_image);
static DEVICE_ATTR_WO(notify);
+static DEVICE_ATTR_RO(spt0_address);
+static DEVICE_ATTR_RO(spt1_address);
static struct attribute *rsu_attrs[] = {
&dev_attr_current_image.attr,
@@ -610,6 +690,8 @@ static struct attribute *rsu_attrs[] = {
&dev_attr_dcmf3_status.attr,
&dev_attr_reboot_image.attr,
&dev_attr_notify.attr,
+ &dev_attr_spt0_address.attr,
+ &dev_attr_spt1_address.attr,
NULL
};
@@ -639,11 +721,13 @@ static int stratix10_rsu_probe(struct platform_device *pdev)
priv->dcmf_version.dcmf1 = INVALID_DCMF_VERSION;
priv->dcmf_version.dcmf2 = INVALID_DCMF_VERSION;
priv->dcmf_version.dcmf3 = INVALID_DCMF_VERSION;
- priv->max_retry = INVALID_RETRY_COUNTER;
priv->dcmf_status.dcmf0 = INVALID_DCMF_STATUS;
priv->dcmf_status.dcmf1 = INVALID_DCMF_STATUS;
priv->dcmf_status.dcmf2 = INVALID_DCMF_STATUS;
priv->dcmf_status.dcmf3 = INVALID_DCMF_STATUS;
+ priv->max_retry = INVALID_RETRY_COUNTER;
+ priv->spt0_address = INVALID_SPT_ADDRESS;
+ priv->spt1_address = INVALID_SPT_ADDRESS;
mutex_init(&priv->lock);
priv->chan = stratix10_svc_request_channel_byname(&priv->client,
@@ -693,6 +777,20 @@ static int stratix10_rsu_probe(struct platform_device *pdev)
stratix10_svc_free_channel(priv->chan);
}
+ priv->get_spt_response_buf =
+ stratix10_svc_allocate_memory(priv->chan, RSU_GET_SPT_RESP_LEN);
+
+ if (!priv->get_spt_response_buf) {
+ dev_err(dev, "failed to allocate get spt buffer\n");
+ } else {
+ int ret_val = rsu_send_msg(priv, COMMAND_MBOX_SEND_CMD,
+ RSU_GET_SPT_CMD, rsu_get_spt_callback);
+ if (ret_val) {
+ dev_err(dev, "Error, getting SPT table %i\n", ret_val);
+ stratix10_svc_free_channel(priv->chan);
+ }
+ }
+
return ret;
}
--
2.25.1
On 7/7/23 03:03, [email protected] wrote:
> From: Radu Bacrau <[email protected]>
>
> Extend Intel Remote System Update (RSU) driver to get SPT
> (Sub-Partition Table) addresses. The query SPT address can be used
> to determine if the RSU QSPI layout is 32kB or 64kB aligned.
> The alignment can be determined by minus the upper with the lower of
> the SPT addresses.
>
> This patch depends on patch:
> firmware: stratix10-svc: Generic Mailbox Command
>
> Signed-off-by: Radu Bacrau <[email protected]>
> Signed-off-by: Kah Jing Lee <[email protected]>
> ---
> drivers/firmware/stratix10-rsu.c | 100 ++++++++++++++++++++++++++++++-
> 1 file changed, 99 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/firmware/stratix10-rsu.c b/drivers/firmware/stratix10-rsu.c
> index e51c95f8d445..9f82d5147890 100644
> --- a/drivers/firmware/stratix10-rsu.c
> +++ b/drivers/firmware/stratix10-rsu.c
> @@ -34,6 +34,10 @@
> #define INVALID_RETRY_COUNTER 0xFF
> #define INVALID_DCMF_VERSION 0xFF
> #define INVALID_DCMF_STATUS 0xFFFFFFFF
> +#define INVALID_SPT_ADDRESS 0x0
> +
> +#define RSU_GET_SPT_CMD 0x5A
> +#define RSU_GET_SPT_RESP_LEN (4 * sizeof(unsigned int))
>
> typedef void (*rsu_callback)(struct stratix10_svc_client *client,
> struct stratix10_svc_cb_data *data);
> @@ -59,6 +63,9 @@ typedef void (*rsu_callback)(struct stratix10_svc_client *client,
> * @dcmf_status.dcmf3: dcmf3 status
> * @retry_counter: the current image's retry counter
> * @max_retry: the preset max retry value
> + * @spt0_address: address of spt0
> + * @spt1_address: address of spt1
> + * @get_spt_response_buf: response from sdm for get_spt command
> */
> struct stratix10_rsu_priv {
> struct stratix10_svc_chan *chan;
> @@ -90,6 +97,11 @@ struct stratix10_rsu_priv {
>
> unsigned int retry_counter;
> unsigned int max_retry;
> +
> + unsigned long spt0_address;
> + unsigned long spt1_address;
> +
> + unsigned int *get_spt_response_buf;
> };
>
> /**
> @@ -259,6 +271,36 @@ static void rsu_dcmf_status_callback(struct stratix10_svc_client *client,
> complete(&priv->completion);
> }
>
> +static void rsu_get_spt_callback(struct stratix10_svc_client *client,
> + struct stratix10_svc_cb_data *data)
> +{
> + struct stratix10_rsu_priv *priv = client->priv;
> + unsigned long *mbox_err = (unsigned long *)data->kaddr1;
> + unsigned long *resp_len = (unsigned long *)data->kaddr2;
> +
> + if ((data->status != BIT(SVC_STATUS_OK)) || (*mbox_err) ||
> + (*resp_len != RSU_GET_SPT_RESP_LEN))
> + goto error;
> +
> + priv->spt0_address = priv->get_spt_response_buf[0];
> + priv->spt0_address <<= 32;
> + priv->spt0_address |= priv->get_spt_response_buf[1];
> +
> + priv->spt1_address = priv->get_spt_response_buf[2];
> + priv->spt1_address <<= 32;
> + priv->spt1_address |= priv->get_spt_response_buf[3];
> +
> + goto complete;
> +
> +error:
> + dev_err(client->dev, "failed to get SPTs\n");
> +
> +complete:
> + stratix10_svc_free_memory(priv->chan, priv->get_spt_response_buf);
> + priv->get_spt_response_buf = NULL;
> + complete(&priv->completion);
> +}
> +
> /**
> * rsu_send_msg() - send a message to Intel service layer
> * @priv: pointer to rsu private data
> @@ -288,6 +330,14 @@ static int rsu_send_msg(struct stratix10_rsu_priv *priv,
> if (arg)
> msg.arg[0] = arg;
>
> + if (command == COMMAND_MBOX_SEND_CMD) {
> + msg.arg[1] = 0;
> + msg.payload = NULL;
> + msg.payload_length = 0;
> + msg.payload_output = priv->get_spt_response_buf;
> + msg.payload_length_output = RSU_GET_SPT_RESP_LEN;
> + }
> +
> ret = stratix10_svc_send(priv->chan, &msg);
> if (ret < 0)
> goto status_done;
> @@ -572,6 +622,34 @@ static ssize_t notify_store(struct device *dev,
> return count;
> }
>
> +static ssize_t spt0_address_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
> +
> + if (!priv)
> + return -ENODEV;
> +
> + if (priv->spt0_address == INVALID_SPT_ADDRESS)
> + return -EIO;
> +
> + return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt0_address);
> +}
> +
> +static ssize_t spt1_address_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
> +
> + if (!priv)
> + return -ENODEV;
> +
> + if (priv->spt1_address == INVALID_SPT_ADDRESS)
> + return -EIO;
> +
> + return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt1_address);
> +}
> +
> static DEVICE_ATTR_RO(current_image);
> static DEVICE_ATTR_RO(fail_image);
> static DEVICE_ATTR_RO(state);
> @@ -590,6 +668,8 @@ static DEVICE_ATTR_RO(dcmf2_status);
> static DEVICE_ATTR_RO(dcmf3_status);
> static DEVICE_ATTR_WO(reboot_image);
> static DEVICE_ATTR_WO(notify);
> +static DEVICE_ATTR_RO(spt0_address);
> +static DEVICE_ATTR_RO(spt1_address);
>
> static struct attribute *rsu_attrs[] = {
> &dev_attr_current_image.attr,
> @@ -610,6 +690,8 @@ static struct attribute *rsu_attrs[] = {
> &dev_attr_dcmf3_status.attr,
> &dev_attr_reboot_image.attr,
> &dev_attr_notify.attr,
> + &dev_attr_spt0_address.attr,
> + &dev_attr_spt1_address.attr,
> NULL
> };
>
> @@ -639,11 +721,13 @@ static int stratix10_rsu_probe(struct platform_device *pdev)
> priv->dcmf_version.dcmf1 = INVALID_DCMF_VERSION;
> priv->dcmf_version.dcmf2 = INVALID_DCMF_VERSION;
> priv->dcmf_version.dcmf3 = INVALID_DCMF_VERSION;
> - priv->max_retry = INVALID_RETRY_COUNTER;
> priv->dcmf_status.dcmf0 = INVALID_DCMF_STATUS;
> priv->dcmf_status.dcmf1 = INVALID_DCMF_STATUS;
> priv->dcmf_status.dcmf2 = INVALID_DCMF_STATUS;
> priv->dcmf_status.dcmf3 = INVALID_DCMF_STATUS;
> + priv->max_retry = INVALID_RETRY_COUNTER;
> + priv->spt0_address = INVALID_SPT_ADDRESS;
> + priv->spt1_address = INVALID_SPT_ADDRESS;
>
> mutex_init(&priv->lock);
> priv->chan = stratix10_svc_request_channel_byname(&priv->client,
> @@ -693,6 +777,20 @@ static int stratix10_rsu_probe(struct platform_device *pdev)
> stratix10_svc_free_channel(priv->chan);
> }
>
> + priv->get_spt_response_buf =
> + stratix10_svc_allocate_memory(priv->chan, RSU_GET_SPT_RESP_LEN);
> +
> + if (!priv->get_spt_response_buf) {
This is wrong, stratix10_svc_allocate_memory does not return NULL, it
returns an ERR_PTR()
> + dev_err(dev, "failed to allocate get spt buffer\n");
> + } else {
> + int ret_val = rsu_send_msg(priv, COMMAND_MBOX_SEND_CMD,
> + RSU_GET_SPT_CMD, rsu_get_spt_callback);
Reuse the already defined ret;
> + if (ret_val) {
> + dev_err(dev, "Error, getting SPT table %i\n", ret_val);
> + stratix10_svc_free_channel(priv->chan);
> + }
> + }
> +
> return ret;
> }
>
> > This patch depends on patch:
> > firmware: stratix10-svc: Generic Mailbox Command
> >
> > Signed-off-by: Radu Bacrau <[email protected]>
> > Signed-off-by: Kah Jing Lee <[email protected]>
> > ---
> > drivers/firmware/stratix10-rsu.c | 100
> ++++++++++++++++++++++++++++++-
> > 1 file changed, 99 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/firmware/stratix10-rsu.c
> > b/drivers/firmware/stratix10-rsu.c
> > index e51c95f8d445..9f82d5147890 100644
> > --- a/drivers/firmware/stratix10-rsu.c
> > +++ b/drivers/firmware/stratix10-rsu.c
> > @@ -34,6 +34,10 @@
> > #define INVALID_RETRY_COUNTER 0xFF
> > #define INVALID_DCMF_VERSION 0xFF
> > #define INVALID_DCMF_STATUS 0xFFFFFFFF
> > +#define INVALID_SPT_ADDRESS 0x0
> > +
> > +#define RSU_GET_SPT_CMD 0x5A
> > +#define RSU_GET_SPT_RESP_LEN (4 * sizeof(unsigned int))
> >
> > typedef void (*rsu_callback)(struct stratix10_svc_client *client,
> > struct stratix10_svc_cb_data *data); @@ -59,6
> +63,9 @@
> > typedef void (*rsu_callback)(struct stratix10_svc_client *client,
> > * @dcmf_status.dcmf3: dcmf3 status
> > * @retry_counter: the current image's retry counter
> > * @max_retry: the preset max retry value
> > + * @spt0_address: address of spt0
> > + * @spt1_address: address of spt1
> > + * @get_spt_response_buf: response from sdm for get_spt command
> > */
> > struct stratix10_rsu_priv {
> > struct stratix10_svc_chan *chan;
> > @@ -90,6 +97,11 @@ struct stratix10_rsu_priv {
> >
> > unsigned int retry_counter;
> > unsigned int max_retry;
> > +
> > + unsigned long spt0_address;
> > + unsigned long spt1_address;
> > +
> > + unsigned int *get_spt_response_buf;
> > };
> >
> > /**
> > @@ -259,6 +271,36 @@ static void rsu_dcmf_status_callback(struct
> stratix10_svc_client *client,
> > complete(&priv->completion);
> > }
> >
> > +static void rsu_get_spt_callback(struct stratix10_svc_client *client,
> > + struct stratix10_svc_cb_data *data) {
> > + struct stratix10_rsu_priv *priv = client->priv;
> > + unsigned long *mbox_err = (unsigned long *)data->kaddr1;
> > + unsigned long *resp_len = (unsigned long *)data->kaddr2;
> > +
> > + if ((data->status != BIT(SVC_STATUS_OK)) || (*mbox_err) ||
> > + (*resp_len != RSU_GET_SPT_RESP_LEN))
> > + goto error;
> > +
> > + priv->spt0_address = priv->get_spt_response_buf[0];
> > + priv->spt0_address <<= 32;
> > + priv->spt0_address |= priv->get_spt_response_buf[1];
> > +
> > + priv->spt1_address = priv->get_spt_response_buf[2];
> > + priv->spt1_address <<= 32;
> > + priv->spt1_address |= priv->get_spt_response_buf[3];
> > +
> > + goto complete;
> > +
> > +error:
> > + dev_err(client->dev, "failed to get SPTs\n");
> > +
> > +complete:
> > + stratix10_svc_free_memory(priv->chan, priv-
> >get_spt_response_buf);
> > + priv->get_spt_response_buf = NULL;
> > + complete(&priv->completion);
> > +}
> > +
> > /**
> > * rsu_send_msg() - send a message to Intel service layer
> > * @priv: pointer to rsu private data @@ -288,6 +330,14 @@ static
> > int rsu_send_msg(struct stratix10_rsu_priv *priv,
> > if (arg)
> > msg.arg[0] = arg;
> >
> > + if (command == COMMAND_MBOX_SEND_CMD) {
> > + msg.arg[1] = 0;
> > + msg.payload = NULL;
> > + msg.payload_length = 0;
> > + msg.payload_output = priv->get_spt_response_buf;
> > + msg.payload_length_output = RSU_GET_SPT_RESP_LEN;
> > + }
> > +
> > ret = stratix10_svc_send(priv->chan, &msg);
> > if (ret < 0)
> > goto status_done;
> > @@ -572,6 +622,34 @@ static ssize_t notify_store(struct device *dev,
> > return count;
> > }
> >
> > +static ssize_t spt0_address_show(struct device *dev,
> > + struct device_attribute *attr, char *buf) {
> > + struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
> > +
> > + if (!priv)
> > + return -ENODEV;
> > +
> > + if (priv->spt0_address == INVALID_SPT_ADDRESS)
> > + return -EIO;
> > +
> > + return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt0_address); }
> > +
> > +static ssize_t spt1_address_show(struct device *dev,
> > + struct device_attribute *attr, char *buf) {
> > + struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
> > +
> > + if (!priv)
> > + return -ENODEV;
> > +
> > + if (priv->spt1_address == INVALID_SPT_ADDRESS)
> > + return -EIO;
> > +
> > + return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt1_address); }
> > +
> > static DEVICE_ATTR_RO(current_image);
> > static DEVICE_ATTR_RO(fail_image);
> > static DEVICE_ATTR_RO(state);
> > @@ -590,6 +668,8 @@ static DEVICE_ATTR_RO(dcmf2_status);
> > static DEVICE_ATTR_RO(dcmf3_status);
> > static DEVICE_ATTR_WO(reboot_image);
> > static DEVICE_ATTR_WO(notify);
> > +static DEVICE_ATTR_RO(spt0_address);
> > +static DEVICE_ATTR_RO(spt1_address);
> >
> > static struct attribute *rsu_attrs[] = {
> > &dev_attr_current_image.attr,
> > @@ -610,6 +690,8 @@ static struct attribute *rsu_attrs[] = {
> > &dev_attr_dcmf3_status.attr,
> > &dev_attr_reboot_image.attr,
> > &dev_attr_notify.attr,
> > + &dev_attr_spt0_address.attr,
> > + &dev_attr_spt1_address.attr,
> > NULL
> > };
> >
> > @@ -639,11 +721,13 @@ static int stratix10_rsu_probe(struct
> platform_device *pdev)
> > priv->dcmf_version.dcmf1 = INVALID_DCMF_VERSION;
> > priv->dcmf_version.dcmf2 = INVALID_DCMF_VERSION;
> > priv->dcmf_version.dcmf3 = INVALID_DCMF_VERSION;
> > - priv->max_retry = INVALID_RETRY_COUNTER;
> > priv->dcmf_status.dcmf0 = INVALID_DCMF_STATUS;
> > priv->dcmf_status.dcmf1 = INVALID_DCMF_STATUS;
> > priv->dcmf_status.dcmf2 = INVALID_DCMF_STATUS;
> > priv->dcmf_status.dcmf3 = INVALID_DCMF_STATUS;
> > + priv->max_retry = INVALID_RETRY_COUNTER;
> > + priv->spt0_address = INVALID_SPT_ADDRESS;
> > + priv->spt1_address = INVALID_SPT_ADDRESS;
> >
> > mutex_init(&priv->lock);
> > priv->chan = stratix10_svc_request_channel_byname(&priv->client,
> > @@ -693,6 +777,20 @@ static int stratix10_rsu_probe(struct
> platform_device *pdev)
> > stratix10_svc_free_channel(priv->chan);
> > }
> >
> > + priv->get_spt_response_buf =
> > + stratix10_svc_allocate_memory(priv->chan,
> RSU_GET_SPT_RESP_LEN);
> > +
> > + if (!priv->get_spt_response_buf) {
>
> This is wrong, stratix10_svc_allocate_memory does not return NULL, it
> returns an ERR_PTR()
>
> > + dev_err(dev, "failed to allocate get spt buffer\n");
> > + } else {
> > + int ret_val = rsu_send_msg(priv,
> COMMAND_MBOX_SEND_CMD,
> > + RSU_GET_SPT_CMD, rsu_get_spt_callback);
>
> Reuse the already defined ret;
Updated in v2, to use ret
>
> > + if (ret_val) {
> > + dev_err(dev, "Error, getting SPT table %i\n", ret_val);
> > + stratix10_svc_free_channel(priv->chan);
> > + }
> > + }
> > +
> > return ret;
> > }
> >