powerpc/powernv: Use ssize_t for sysparam return values

The OPAL calls are returning int64_t values, which the sysparam code
stores in an int, and the sysfs callback returns ssize_t. Make code a
easier to read by consistently using ssize_t.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c
index a51ea189aec3f3342c39959db2241ceb51d37f20..0675e1a90b40bc821f8b5dea94336d7de29b6d65 100644 (file)
--- a/arch/powerpc/platforms/powernv/opal-sysparam.c
+++ b/arch/powerpc/platforms/powernv/opal-sysparam.c
@@ -39,10 +39,11 @@ struct param_attr {
        struct kobj_attribute kobj_attr;
 };
 
-static int opal_get_sys_param(u32 param_id, u32 length, void *buffer)
+static ssize_t opal_get_sys_param(u32 param_id, u32 length, void *buffer)
 {
        struct opal_msg msg;
-       int ret, token;
+       ssize_t ret;
+       int token;
 
        token = opal_async_get_token_interruptible();
        if (token < 0) {
@@ -59,7 +60,7 @@ static int opal_get_sys_param(u32 param_id, u32 length, void *buffer)
 
        ret = opal_async_wait_response(token, &msg);
        if (ret) {
-               pr_err("%s: Failed to wait for the async response, %d\n",
+               pr_err("%s: Failed to wait for the async response, %zd\n",
                                __func__, ret);
                goto out_token;
        }
@@ -111,7 +112,7 @@ static ssize_t sys_param_show(struct kobject *kobj,
 {
        struct param_attr *attr = container_of(kobj_attr, struct param_attr,
                        kobj_attr);
-       int ret;
+       ssize_t ret;
 
        mutex_lock(&opal_sysparam_mutex);
        ret = opal_get_sys_param(attr->param_id, attr->param_size,
@@ -132,7 +133,7 @@ static ssize_t sys_param_store(struct kobject *kobj,
 {
        struct param_attr *attr = container_of(kobj_attr, struct param_attr,
                        kobj_attr);
-       int ret;
+       ssize_t ret;
 
        mutex_lock(&opal_sysparam_mutex);
        memcpy(param_data_buf, buf, count);