6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@xxxxxxx>
commit e34f1717ef0632fcec5cb827e5e0e9f223d70c9b upstream.
The read will never succeed if NVM wasn't initialized due to an unknown
format.
Add a new callback for visibility to only show when supported.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: aef9c693e7e5 ("thunderbolt: Move vendor specific NVM handling into nvm.c")
Reported-by: Richard Hughes <hughsient@xxxxxxxxx>
Closes: https://github.com/fwupd/fwupd/issues/8200
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thunderbolt/retimer.c | 19 +++++++++++++++----
1 file changed, 15 insertions(+), 4 deletions(-)
--- a/drivers/thunderbolt/retimer.c
+++ b/drivers/thunderbolt/retimer.c
@@ -103,6 +103,7 @@ static int tb_retimer_nvm_add(struct tb_
err_nvm:
dev_dbg(&rt->dev, "NVM upgrade disabled\n");
+ rt->no_nvm_upgrade = true;
if (!IS_ERR(nvm))
tb_nvm_free(nvm);
@@ -182,8 +183,6 @@ static ssize_t nvm_authenticate_show(str
if (!rt->nvm)
ret = -EAGAIN;
- else if (rt->no_nvm_upgrade)
- ret = -EOPNOTSUPP;
else
ret = sysfs_emit(buf, "%#x\n", rt->auth_status);
@@ -323,8 +322,6 @@ static ssize_t nvm_version_show(struct d
if (!rt->nvm)
ret = -EAGAIN;
- else if (rt->no_nvm_upgrade)
- ret = -EOPNOTSUPP;
else
ret = sysfs_emit(buf, "%x.%x\n", rt->nvm->major, rt->nvm->minor);
@@ -342,6 +339,19 @@ static ssize_t vendor_show(struct device
}
static DEVICE_ATTR_RO(vendor);
+static umode_t retimer_is_visible(struct kobject *kobj, struct attribute *attr,
+ int n)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct tb_retimer *rt = tb_to_retimer(dev);
+
+ if (attr == &dev_attr_nvm_authenticate.attr ||
+ attr == &dev_attr_nvm_version.attr)
+ return rt->no_nvm_upgrade ? 0 : attr->mode;
+
+ return attr->mode;
+}
+
static struct attribute *retimer_attrs[] = {
&dev_attr_device.attr,
&dev_attr_nvm_authenticate.attr,
@@ -351,6 +361,7 @@ static struct attribute *retimer_attrs[]
};
static const struct attribute_group retimer_group = {
+ .is_visible = retimer_is_visible,
.attrs = retimer_attrs,
};
