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mISDN: endian annotations for struct zt 

Found two possible bugs where the z1 value was used directly without
byteswapping.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Harvey Harrison 2008-09-22 19:16:20 -07:00 committed by David S. Miller
parent 4d5392cc4d
commit f11d32dfaa
2 changed files with 6 additions and 7 deletions
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4
drivers/isdn/hardware/mISDN/hfc_pci.h
View File

@ -183,8 +183,8 @@
#define D_FREG_MASK 0xF
struct zt {
unsigned short z1; /* Z1 pointer 16 Bit */
unsigned short z2; /* Z2 pointer 16 Bit */
__le16 z1; /* Z1 pointer 16 Bit */
__le16 z2; /* Z2 pointer 16 Bit */
};
struct dfifo {

9
drivers/isdn/hardware/mISDN/hfcpci.c
View File

@ -366,8 +366,7 @@ static void hfcpci_clear_fifo_tx(struct hfc_pci *hc, int fifo)
bzt->f2 = MAX_B_FRAMES;
bzt->f1 = bzt->f2; /* init F pointers to remain constant */
bzt->za[MAX_B_FRAMES].z1 = cpu_to_le16(B_FIFO_SIZE + B_SUB_VAL - 1);
bzt->za[MAX_B_FRAMES].z2 = cpu_to_le16(
le16_to_cpu(bzt->za[MAX_B_FRAMES].z1 - 1));
bzt->za[MAX_B_FRAMES].z2 = cpu_to_le16(B_FIFO_SIZE + B_SUB_VAL - 2);
if (fifo_state)
hc->hw.fifo_en |= fifo_state;
Write_hfc(hc, HFCPCI_FIFO_EN, hc->hw.fifo_en);
@ -482,7 +481,7 @@ receive_dmsg(struct hfc_pci *hc)
df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) |
(MAX_D_FRAMES + 1); /* next buffer */
df->za[df->f2 & D_FREG_MASK].z2 =
cpu_to_le16((zp->z2 + rcnt) & (D_FIFO_SIZE - 1));
cpu_to_le16((le16_to_cpu(zp->z2) + rcnt) & (D_FIFO_SIZE - 1));
} else {
dch->rx_skb = mI_alloc_skb(rcnt - 3, GFP_ATOMIC);
if (!dch->rx_skb) {
@ -526,7 +525,7 @@ receive_dmsg(struct hfc_pci *hc)
int
hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *bz, u_char *bdata)
{
unsigned short *z1r, *z2r;
__le16 *z1r, *z2r;
int new_z2, fcnt, maxlen;
u_char *ptr, *ptr1;
@ -724,7 +723,7 @@ hfcpci_fill_fifo(struct bchannel *bch)
struct bzfifo *bz;
u_char *bdata;
u_char new_f1, *src, *dst;
unsigned short *z1t, *z2t;
__le16 *z1t, *z2t;
if ((bch->debug & DEBUG_HW_BCHANNEL) && !(bch->debug & DEBUG_HW_BFIFO))
printk(KERN_DEBUG "%s\n", __func__);