vfio-mdev/samples: Use u8 instead of char for handle functions

[sfrench/cifs-2.6.git] / samples / vfio-mdev / mtty.c

diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c
index 7abb79d8313d94c5bd214485ed7f2a6b8b555ce1..f6732aa16bb1fbbfe30199def3c35d16b807fec8 100644 (file)
--- a/samples/vfio-mdev/mtty.c
+++ b/samples/vfio-mdev/mtty.c
@@ -171,7 +171,7 @@ static struct mdev_state *find_mdev_state_by_uuid(uuid_le uuid)
        return NULL;
 }
 
-void dump_buffer(char *buf, uint32_t count)
+void dump_buffer(u8 *buf, uint32_t count)
 {
 #if defined(DEBUG)
        int i;
@@ -250,7 +250,7 @@ static void mtty_create_config_space(struct mdev_state *mdev_state)
 }
 
 static void handle_pci_cfg_write(struct mdev_state *mdev_state, u16 offset,
-                                char *buf, u32 count)
+                                u8 *buf, u32 count)
 {
        u32 cfg_addr, bar_mask, bar_index = 0;
 
@@ -304,7 +304,7 @@ static void handle_pci_cfg_write(struct mdev_state *mdev_state, u16 offset,
 }
 
 static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
-                               u16 offset, char *buf, u32 count)
+                               u16 offset, u8 *buf, u32 count)
 {
        u8 data = *buf;
 
@@ -475,7 +475,7 @@ static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
 }
 
 static void handle_bar_read(unsigned int index, struct mdev_state *mdev_state,
-                           u16 offset, char *buf, u32 count)
+                           u16 offset, u8 *buf, u32 count)
 {
        /* Handle read requests by guest */
        switch (offset) {
@@ -650,7 +650,7 @@ static void mdev_read_base(struct mdev_state *mdev_state)
        }
 }
 
-static ssize_t mdev_access(struct mdev_device *mdev, char *buf, size_t count,
+static ssize_t mdev_access(struct mdev_device *mdev, u8 *buf, size_t count,
                           loff_t pos, bool is_write)
 {
        struct mdev_state *mdev_state;
@@ -698,7 +698,7 @@ static ssize_t mdev_access(struct mdev_device *mdev, char *buf, size_t count,
 #if defined(DEBUG_REGS)
                        pr_info("%s: BAR%d  WR @0x%llx %s val:0x%02x dlab:%d\n",
                                __func__, index, offset, wr_reg[offset],
-                               (u8)*buf, mdev_state->s[index].dlab);
+                               *buf, mdev_state->s[index].dlab);
 #endif
                        handle_bar_write(index, mdev_state, offset, buf, count);
                } else {
@@ -708,7 +708,7 @@ static ssize_t mdev_access(struct mdev_device *mdev, char *buf, size_t count,
 #if defined(DEBUG_REGS)
                        pr_info("%s: BAR%d  RD @0x%llx %s val:0x%02x dlab:%d\n",
                                __func__, index, offset, rd_reg[offset],
-                               (u8)*buf, mdev_state->s[index].dlab);
+                               *buf, mdev_state->s[index].dlab);
 #endif
                }
                break;
@@ -827,7 +827,7 @@ ssize_t mtty_read(struct mdev_device *mdev, char __user *buf, size_t count,
                if (count >= 4 && !(*ppos % 4)) {
                        u32 val;
 
-                       ret =  mdev_access(mdev, (char *)&val, sizeof(val),
+                       ret =  mdev_access(mdev, (u8 *)&val, sizeof(val),
                                           *ppos, false);
                        if (ret <= 0)
                                goto read_err;
@@ -839,7 +839,7 @@ ssize_t mtty_read(struct mdev_device *mdev, char __user *buf, size_t count,
                } else if (count >= 2 && !(*ppos % 2)) {
                        u16 val;
 
-                       ret = mdev_access(mdev, (char *)&val, sizeof(val),
+                       ret = mdev_access(mdev, (u8 *)&val, sizeof(val),
                                          *ppos, false);
                        if (ret <= 0)
                                goto read_err;
@@ -851,7 +851,7 @@ ssize_t mtty_read(struct mdev_device *mdev, char __user *buf, size_t count,
                } else {
                        u8 val;
 
-                       ret = mdev_access(mdev, (char *)&val, sizeof(val),
+                       ret = mdev_access(mdev, (u8 *)&val, sizeof(val),
                                          *ppos, false);
                        if (ret <= 0)
                                goto read_err;
@@ -889,7 +889,7 @@ ssize_t mtty_write(struct mdev_device *mdev, const char __user *buf,
                        if (copy_from_user(&val, buf, sizeof(val)))
                                goto write_err;
 
-                       ret = mdev_access(mdev, (char *)&val, sizeof(val),
+                       ret = mdev_access(mdev, (u8 *)&val, sizeof(val),
                                          *ppos, true);
                        if (ret <= 0)
                                goto write_err;
@@ -901,7 +901,7 @@ ssize_t mtty_write(struct mdev_device *mdev, const char __user *buf,
                        if (copy_from_user(&val, buf, sizeof(val)))
                                goto write_err;
 
-                       ret = mdev_access(mdev, (char *)&val, sizeof(val),
+                       ret = mdev_access(mdev, (u8 *)&val, sizeof(val),
                                          *ppos, true);
                        if (ret <= 0)
                                goto write_err;
@@ -913,7 +913,7 @@ ssize_t mtty_write(struct mdev_device *mdev, const char __user *buf,
                        if (copy_from_user(&val, buf, sizeof(val)))
                                goto write_err;
 
-                       ret = mdev_access(mdev, (char *)&val, sizeof(val),
+                       ret = mdev_access(mdev, (u8 *)&val, sizeof(val),
                                          *ppos, true);
                        if (ret <= 0)
                                goto write_err;