i2c: cpm: make use of the new infrastructure for quirks

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 9 insertions, 11 deletions

diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 2d466538b2e2..714bdc837769 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -308,22 +308,12 @@ static int cpm_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
         struct i2c_reg __iomem *i2c_reg = cpm->i2c_reg;
         struct i2c_ram __iomem *i2c_ram = cpm->i2c_ram;
         struct i2c_msg *pmsg;
-        int ret, i;
+        int ret;
         int tptr;
         int rptr;
         cbd_t __iomem *tbdf;
         cbd_t __iomem *rbdf;
 
-        if (num > CPM_MAXBD)
-                return -EINVAL;
-
-        /* Check if we have any oversized READ requests */
-        for (i = 0; i < num; i++) {
-                pmsg = &msgs[i];
-                if (pmsg->len >= CPM_MAX_READ)
-                        return -EINVAL;
-        }
-
         /* Reset to use first buffer */
         out_be16(&i2c_ram->rbptr, in_be16(&i2c_ram->rbase));
         out_be16(&i2c_ram->tbptr, in_be16(&i2c_ram->tbase));
@@ -424,10 +414,18 @@ static const struct i2c_algorithm cpm_i2c_algo = {
         .functionality = cpm_i2c_func,
 };
 
+/* CPM_MAX_READ is also limiting writes according to the code! */
+static struct i2c_adapter_quirks cpm_i2c_quirks = {
+        .max_num_msgs = CPM_MAXBD,
+        .max_read_len = CPM_MAX_READ,
+        .max_write_len = CPM_MAX_READ,
+};
+
 static const struct i2c_adapter cpm_ops = {
         .owner          = THIS_MODULE,
         .name           = "i2c-cpm",
         .algo           = &cpm_i2c_algo,
+        .quirks         = &cpm_i2c_quirks,
 };
 
 static int cpm_i2c_setup(struct cpm_i2c *cpm)