Use the correct types and sizes.

Signed-off-by: Grigori Goronzy <g...@chown.ath.cx>
---
 drivers/usb/serial/ch341.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 25c5d8d..6781911 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -116,7 +116,7 @@ static int ch341_control_out(struct usb_device *dev, u8 
request,
 
 static int ch341_control_in(struct usb_device *dev,
                            u8 request, u16 value, u16 index,
-                           char *buf, unsigned bufsize)
+                           unsigned char *buf, unsigned bufsize)
 {
        int r;
 
@@ -169,9 +169,9 @@ static int ch341_set_handshake(struct usb_device *dev, u8 
control)
 
 static int ch341_get_status(struct usb_device *dev, struct ch341_private *priv)
 {
-       char *buffer;
+       unsigned char *buffer;
        int r;
-       const unsigned size = 8;
+       const unsigned size = 2;
        unsigned long flags;
 
        buffer = kmalloc(size, GFP_KERNEL);
@@ -199,9 +199,9 @@ out:        kfree(buffer);
 
 static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
 {
-       char *buffer;
+       unsigned char *buffer;
        int r;
-       const unsigned size = 8;
+       const unsigned size = 2;
 
        buffer = kmalloc(size, GFP_KERNEL);
        if (!buffer)
-- 
1.9.1

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