[ALSA] Fix compile warning in timer.c

[safe/jmp/linux-2.6] / drivers / char / hvc_vio.c

diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
index 430a2c2..9add81c 100644 (file)
--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c
@@ -31,20 +31,53 @@
 
 #include <linux/types.h>
 #include <linux/init.h>
+
 #include <asm/hvconsole.h>
 #include <asm/vio.h>
 #include <asm/prom.h>
 
+#include "hvc_console.h"
+
 char hvc_driver_name[] = "hvc_console";
 
 static struct vio_device_id hvc_driver_table[] __devinitdata = {
        {"serial", "hvterm1"},
-       { NULL, }
+       { "", "" }
 };
 MODULE_DEVICE_TABLE(vio, hvc_driver_table);
 
+static int filtered_get_chars(uint32_t vtermno, char *buf, int count)
+{
+       unsigned long got;
+       int i;
+
+       /*
+        * Vio firmware will read up to SIZE_VIO_GET_CHARS at its own discretion
+        * so we play safe and avoid the situation where got > count which could
+        * overload the flip buffer.
+        */
+       if (count < SIZE_VIO_GET_CHARS)
+               return -EAGAIN;
+
+       got = hvc_get_chars(vtermno, buf, count);
+
+       /*
+        * Work around a HV bug where it gives us a null
+        * after every \r.  -- paulus
+        */
+       for (i = 1; i < got; ++i) {
+               if (buf[i] == 0 && buf[i-1] == '\r') {
+                       --got;
+                       if (i < got)
+                               memmove(&buf[i], &buf[i+1],
+                                       got - i);
+               }
+       }
+       return got;
+}
+
 static struct hv_ops hvc_get_put_ops = {
-       .get_chars = hvc_get_chars,
+       .get_chars = filtered_get_chars,
        .put_chars = hvc_put_chars,
 };
 
@@ -73,11 +106,11 @@ static int __devexit hvc_vio_remove(struct vio_dev *vdev)
 }
 
 static struct vio_driver hvc_vio_driver = {
-       .name           = hvc_driver_name,
        .id_table       = hvc_driver_table,
        .probe          = hvc_vio_probe,
        .remove         = hvc_vio_remove,
        .driver         = {
+               .name   = hvc_driver_name,
                .owner  = THIS_MODULE,
        }
 };