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USB: Fix complaints about strict aliasing in OHCI-HCD

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Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
This commit is contained in:
Marek Vasut 2011-10-07 02:00:13 +02:00 committed by Remy Bohmer
parent 5a1219efe9
commit 5f6aa03fda
1 changed files with 43 additions and 32 deletions
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75
drivers/usb/host/ohci-hcd.c
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@ -1262,12 +1262,19 @@ static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
int len = 0;
int stat = 0;
__u32 datab[4];
__u8 *data_buf = (__u8 *)datab;
union {
void *ptr;
__u8 *u8;
__u16 *u16;
__u32 *u32;
} databuf;
__u16 bmRType_bReq;
__u16 wValue;
__u16 wIndex;
__u16 wLength;
databuf.u32 = (__u32 *)datab;
#ifdef DEBUG
pkt_print(NULL, dev, pipe, buffer, transfer_len,
cmd, "SUB(rh)", usb_pipein(pipe));
@ -1297,20 +1304,20 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
*/
case RH_GET_STATUS:
*(__u16 *) data_buf = cpu_to_le16(1);
databuf.u16[0] = cpu_to_le16(1);
OK(2);
case RH_GET_STATUS | RH_INTERFACE:
*(__u16 *) data_buf = cpu_to_le16(0);
databuf.u16[0] = cpu_to_le16(0);
OK(2);
case RH_GET_STATUS | RH_ENDPOINT:
*(__u16 *) data_buf = cpu_to_le16(0);
databuf.u16[0] = cpu_to_le16(0);
OK(2);
case RH_GET_STATUS | RH_CLASS:
*(__u32 *) data_buf = cpu_to_le32(
databuf.u32[0] = cpu_to_le32(
RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
OK(4);
case RH_GET_STATUS | RH_OTHER | RH_CLASS:
*(__u32 *) data_buf = cpu_to_le32(RD_RH_PORTSTAT);
databuf.u32[0] = cpu_to_le32(RD_RH_PORTSTAT);
OK(4);
case RH_CLEAR_FEATURE | RH_ENDPOINT:
@ -1374,14 +1381,14 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
min_t(unsigned int,
sizeof(root_hub_dev_des),
wLength));
data_buf = root_hub_dev_des; OK(len);
databuf.ptr = root_hub_dev_des; OK(len);
case (0x02): /* configuration descriptor */
len = min_t(unsigned int,
leni,
min_t(unsigned int,
sizeof(root_hub_config_des),
wLength));
data_buf = root_hub_config_des; OK(len);
databuf.ptr = root_hub_config_des; OK(len);
case (0x03): /* string descriptors */
if (wValue == 0x0300) {
len = min_t(unsigned int,
@ -1389,7 +1396,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
min_t(unsigned int,
sizeof(root_hub_str_index0),
wLength));
data_buf = root_hub_str_index0;
databuf.ptr = root_hub_str_index0;
OK(len);
}
if (wValue == 0x0301) {
@ -1398,7 +1405,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
min_t(unsigned int,
sizeof(root_hub_str_index1),
wLength));
data_buf = root_hub_str_index1;
databuf.ptr = root_hub_str_index1;
OK(len);
}
default:
@ -1410,41 +1417,45 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
{
__u32 temp = roothub_a(&gohci);
data_buf [0] = 9; /* min length; */
data_buf [1] = 0x29;
data_buf [2] = temp & RH_A_NDP;
databuf.u8[0] = 9; /* min length; */
databuf.u8[1] = 0x29;
databuf.u8[2] = temp & RH_A_NDP;
#ifdef CONFIG_AT91C_PQFP_UHPBUG
data_buf [2] = (data_buf [2] == 2) ? 1:0;
databuf.u8[2] = (databuf.u8[2] == 2) ? 1 : 0;
#endif
data_buf [3] = 0;
databuf.u8[3] = 0;
if (temp & RH_A_PSM) /* per-port power switching? */
data_buf [3] |= 0x1;
databuf.u8[3] |= 0x1;
if (temp & RH_A_NOCP) /* no overcurrent reporting? */
data_buf [3] |= 0x10;
databuf.u8[3] |= 0x10;
else if (temp & RH_A_OCPM)/* per-port overcurrent reporting? */
data_buf [3] |= 0x8;
databuf.u8[3] |= 0x8;
/* corresponds to data_buf[4-7] */
datab [1] = 0;
data_buf [5] = (temp & RH_A_POTPGT) >> 24;
/* corresponds to databuf.u8[4-7] */
databuf.u8[1] = 0;
databuf.u8[5] = (temp & RH_A_POTPGT) >> 24;
temp = roothub_b(&gohci);
data_buf [7] = temp & RH_B_DR;
if (data_buf [2] < 7) {
data_buf [8] = 0xff;
databuf.u8[7] = temp & RH_B_DR;
if (databuf.u8[2] < 7) {
databuf.u8[8] = 0xff;
} else {
data_buf [0] += 2;
data_buf [8] = (temp & RH_B_DR) >> 8;
data_buf [10] = data_buf [9] = 0xff;
databuf.u8[0] += 2;
databuf.u8[8] = (temp & RH_B_DR) >> 8;
databuf.u8[10] = databuf.u8[9] = 0xff;
}
len = min_t(unsigned int, leni,
min_t(unsigned int, data_buf [0], wLength));
min_t(unsigned int, databuf.u8[0], wLength));
OK(len);
}
case RH_GET_CONFIGURATION: *(__u8 *) data_buf = 0x01; OK(1);
case RH_GET_CONFIGURATION:
databuf.u8[0] = 0x01;
OK(1);
case RH_SET_CONFIGURATION: WR_RH_STAT(0x10000); OK(0);
case RH_SET_CONFIGURATION:
WR_RH_STAT(0x10000);
OK(0);
default:
dbg("unsupported root hub command");
@ -1458,8 +1469,8 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
#endif
len = min_t(int, len, leni);
if (data != data_buf)
memcpy(data, data_buf, len);
if (data != databuf.ptr)
memcpy(data, databuf.ptr, len);
dev->act_len = len;
dev->status = stat;