[PATCH v1 14/17] thunderbolt: switch: Change nvmem reg_read/write return type

[Joy Chakraborty <joychakr@xxxxxxxxxx>]

Change nvmem read/write function definition return type to ssize_t.

Signed-off-by: Joy Chakraborty <joychakr@xxxxxxxxxx>
---
 drivers/thunderbolt/switch.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 326433df5880..35424a65cd3a 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -301,7 +301,7 @@ int tb_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
 	return dma_port_flash_read(sw->dma_port, address, buf, size);
 }
 
-static int nvm_read(void *priv, unsigned int offset, void *val, size_t bytes)
+static ssize_t nvm_read(void *priv, unsigned int offset, void *val, size_t bytes)
 {
 	struct tb_nvm *nvm = priv;
 	struct tb_switch *sw = tb_to_switch(nvm->dev);
@@ -321,10 +321,10 @@ static int nvm_read(void *priv, unsigned int offset, void *val, size_t bytes)
 	pm_runtime_mark_last_busy(&sw->dev);
 	pm_runtime_put_autosuspend(&sw->dev);
 
-	return ret;
+	return ret < 0 ? ret : bytes;
 }
 
-static int nvm_write(void *priv, unsigned int offset, void *val, size_t bytes)
+static ssize_t nvm_write(void *priv, unsigned int offset, void *val, size_t bytes)
 {
 	struct tb_nvm *nvm = priv;
 	struct tb_switch *sw = tb_to_switch(nvm->dev);
@@ -342,7 +342,7 @@ static int nvm_write(void *priv, unsigned int offset, void *val, size_t bytes)
 	ret = tb_nvm_write_buf(nvm, offset, val, bytes);
 	mutex_unlock(&sw->tb->lock);
 
-	return ret;
+	return ret < 0 ? ret : bytes;
 }
 
 static int tb_switch_nvm_add(struct tb_switch *sw)
-- 
2.45.1.467.gbab1589fc0-goog