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firewire: core: small clarifications in core-cdev 

Make a note on the seemingly unused linux/sched.h.
Rename an irritatingly named variable.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2010-07-29 09:31:56 +02:00
parent 69e61d0c07
commit ae2a976614
1 changed files with 6 additions and 6 deletions
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12
drivers/firewire/core-cdev.c
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@ -34,7 +34,7 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/sched.h> /* required for linux/wait.h */
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/time.h>
@ -993,7 +993,7 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
struct fw_cdev_queue_iso *a = &arg->queue_iso;
struct fw_cdev_iso_packet __user *p, *end, *next;
struct fw_iso_context *ctx = client->iso_context;
unsigned long payload, buffer_end, header_length;
unsigned long payload, buffer_end, transmit_header_bytes;
u32 control;
int count;
struct {
@ -1042,7 +1042,7 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
if (u.packet.header_length % 4 != 0)
return -EINVAL;
header_length = u.packet.header_length;
transmit_header_bytes = u.packet.header_length;
} else {
/*
* We require that header_length is a multiple of
@ -1051,15 +1051,15 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
if (u.packet.header_length == 0 ||
u.packet.header_length % ctx->header_size != 0)
return -EINVAL;
header_length = 0;
transmit_header_bytes = 0;
}
next = (struct fw_cdev_iso_packet __user *)
&p->header[header_length / 4];
&p->header[transmit_header_bytes / 4];
if (next > end)
return -EINVAL;
if (__copy_from_user
(u.packet.header, p->header, header_length))
(u.packet.header, p->header, transmit_header_bytes))
return -EFAULT;
if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT &&
u.packet.header_length + u.packet.payload_length > 0)