fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / char / pcmcia / cm4040_cs.c

diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index 55cf4be..3a6d05b 100644 (file)
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -273,6 +273,7 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
        DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
 
        min_bytes_to_read = min(count, bytes_to_read + 5);
+       min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE);
 
        DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
 
@@ -340,7 +341,7 @@ static ssize_t cm4040_write(struct file *filp, const char __user *buf,
                return 0;
        }
 
-       if (count < 5) {
+       if ((count < 5) || (count > READ_WRITE_BUFFER_SIZE)) {
                DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
                return -EIO;
        }
@@ -523,29 +524,11 @@ static int reader_config(struct pcmcia_device *link, int devno)
        int fail_fn, fail_rc;
        int rc;
 
-       tuple.DesiredTuple = CISTPL_CONFIG;
        tuple.Attributes = 0;
        tuple.TupleData = buf;
        tuple.TupleDataMax = sizeof(buf);
        tuple.TupleOffset = 0;
 
-       if ((fail_rc = pcmcia_get_first_tuple(link, &tuple)) != CS_SUCCESS) {
-               fail_fn = GetFirstTuple;
-               goto cs_failed;
-       }
-       if ((fail_rc = pcmcia_get_tuple_data(link, &tuple)) != CS_SUCCESS) {
-               fail_fn = GetTupleData;
-               goto cs_failed;
-       }
-       if ((fail_rc = pcmcia_parse_tuple(link, &tuple, &parse))
-                                                       != CS_SUCCESS) {
-               fail_fn = ParseTuple;
-               goto cs_failed;
-       }
-
-       link->conf.ConfigBase = parse.config.base;
-       link->conf.Present = parse.config.rmask[0];
-
        link->io.BasePort2 = 0;
        link->io.NumPorts2 = 0;
        link->io.Attributes2 = 0;
@@ -609,8 +592,6 @@ static int reader_config(struct pcmcia_device *link, int devno)
 
        return 0;
 
-cs_failed:
-       cs_error(link, fail_fn, fail_rc);
 cs_release:
        reader_release(link);
        return -ENODEV;
@@ -721,14 +702,14 @@ static int __init cm4040_init(void)
 
        printk(KERN_INFO "%s\n", version);
        cmx_class = class_create(THIS_MODULE, "cardman_4040");
-       if (!cmx_class)
-               return -1;
+       if (IS_ERR(cmx_class))
+               return PTR_ERR(cmx_class);
 
        major = register_chrdev(0, DEVICE_NAME, &reader_fops);
        if (major < 0) {
                printk(KERN_WARNING MODULE_NAME
                        ": could not get major number\n");
-               return -1;
+               return major;
        }
 
        rc = pcmcia_register_driver(&reader_driver);