WIP: update tizen_qemu_defconfig

[platform/kernel/linux-starfive.git] / fs / libfs.c

diff --git a/fs/libfs.c b/fs/libfs.c
index 682d563..aada4e7 100644 (file)
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -995,8 +995,8 @@ out:
 EXPORT_SYMBOL_GPL(simple_attr_read);
 
 /* interpret the buffer as a number to call the set function with */
-ssize_t simple_attr_write(struct file *file, const char __user *buf,
-                         size_t len, loff_t *ppos)
+static ssize_t simple_attr_write_xsigned(struct file *file, const char __user *buf,
+                         size_t len, loff_t *ppos, bool is_signed)
 {
        struct simple_attr *attr;
        unsigned long long val;
@@ -1017,7 +1017,10 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
                goto out;
 
        attr->set_buf[size] = '\0';
-       ret = kstrtoull(attr->set_buf, 0, &val);
+       if (is_signed)
+               ret = kstrtoll(attr->set_buf, 0, &val);
+       else
+               ret = kstrtoull(attr->set_buf, 0, &val);
        if (ret)
                goto out;
        ret = attr->set(attr->data, val);
@@ -1027,8 +1030,21 @@ out:
        mutex_unlock(&attr->mutex);
        return ret;
 }
+
+ssize_t simple_attr_write(struct file *file, const char __user *buf,
+                         size_t len, loff_t *ppos)
+{
+       return simple_attr_write_xsigned(file, buf, len, ppos, false);
+}
 EXPORT_SYMBOL_GPL(simple_attr_write);
 
+ssize_t simple_attr_write_signed(struct file *file, const char __user *buf,
+                         size_t len, loff_t *ppos)
+{
+       return simple_attr_write_xsigned(file, buf, len, ppos, true);
+}
+EXPORT_SYMBOL_GPL(simple_attr_write_signed);
+
 /**
  * generic_fh_to_dentry - generic helper for the fh_to_dentry export operation
  * @sb:                filesystem to do the file handle conversion on