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staging: usbip: replaced pointer arithmetic, and strongly type function return. 

Replaced pointer arithmetic by using array indexing, and changed
function return type for usbip_alloc_iso_desc_pdu from 'void*' to
'struct usbip_iso_packet_descriptor'.

Signed-off-by: Bart Westgeest <bart@elbrys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bart Westgeest 2012-10-10 13:34:25 -04:00 committed by Greg Kroah-Hartman
parent a297ad936e
commit 36ac9b055f
4 changed files with 15 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/usbip/stub_tx.c
View File

@ -166,7 +166,7 @@ static int stub_send_ret_submit(struct stub_device *sdev)
int ret;
struct urb *urb = priv->urb;
struct usbip_header pdu_header;
void *iso_buffer = NULL;
struct usbip_iso_packet_descriptor *iso_buffer = NULL;
struct kvec *iov = NULL;
int iovnum = 0;

23
drivers/staging/usbip/usbip_common.c
View File

@ -639,28 +639,26 @@ static void usbip_pack_iso(struct usbip_iso_packet_descriptor *iso,
}
/* must free buffer */
void *usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen)
struct usbip_iso_packet_descriptor*
usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen)
{
void *buff;
struct usbip_iso_packet_descriptor *iso;
int np = urb->number_of_packets;
ssize_t size = np * sizeof(*iso);
int i;
buff = kzalloc(size, GFP_KERNEL);
if (!buff)
iso = kzalloc(size, GFP_KERNEL);
if (!iso)
return NULL;
for (i = 0; i < np; i++) {
iso = buff + (i * sizeof(*iso));
usbip_pack_iso(iso, &urb->iso_frame_desc[i], 1);
usbip_iso_packet_correct_endian(iso, 1);
usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 1);
usbip_iso_packet_correct_endian(&iso[i], 1);
}
*bufflen = size;
return buff;
return iso;
}
EXPORT_SYMBOL_GPL(usbip_alloc_iso_desc_pdu);
@ -703,11 +701,10 @@ int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
return -EPIPE;
}
iso = (struct usbip_iso_packet_descriptor *) buff;
for (i = 0; i < np; i++) {
iso = buff + (i * sizeof(*iso));
usbip_iso_packet_correct_endian(iso, 0);
usbip_pack_iso(iso, &urb->iso_frame_desc[i], 0);
usbip_iso_packet_correct_endian(&iso[i], 0);
usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 0);
total_length += urb->iso_frame_desc[i].actual_length;
}

4
drivers/staging/usbip/usbip_common.h
View File

@ -320,7 +320,9 @@ void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,
int pack);
void usbip_header_correct_endian(struct usbip_header *pdu, int send);
void *usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen);
struct usbip_iso_packet_descriptor*
usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen);
/* some members of urb must be substituted before. */
int usbip_recv_iso(struct usbip_device *ud, struct urb *urb);
void usbip_pad_iso(struct usbip_device *ud, struct urb *urb);

2
drivers/staging/usbip/vhci_tx.c
View File

@ -76,7 +76,7 @@ static int vhci_send_cmd_submit(struct vhci_device *vdev)
int ret;
struct urb *urb = priv->urb;
struct usbip_header pdu_header;
void *iso_buffer = NULL;
struct usbip_iso_packet_descriptor *iso_buffer = NULL;
txsize = 0;
memset(&pdu_header, 0, sizeof(pdu_header));