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usb: musb: constify a bit

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These ep and root hub structures need not be writable.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2010-10-20 07:15:35 -04:00 committed by Remy Bohmer
parent 8b675fe18e
commit 0228348e9c
3 changed files with 21 additions and 19 deletions
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2
drivers/usb/musb/musb_core.c
View file

@ -76,7 +76,7 @@ void musb_start(void)
* epinfo - Pointer to EP configuration table
* cnt - Number of entries in the EP conf table.
*/
void musb_configure_ep(struct musb_epinfo *epinfo, u8 cnt)
void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt)
{
u16 csr;
u16 fifoaddr = 64; /* First 64 bytes of FIFO reserved for EP0 */

2
drivers/usb/musb/musb_core.h
View file

@ -357,7 +357,7 @@ extern struct musb_regs *musbr;
/* exported functions */
extern void musb_start(void);
extern void musb_configure_ep(struct musb_epinfo *epinfo, u8 cnt);
extern void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt);
extern void write_fifo(u8 ep, u32 length, void *fifo_data);
extern void read_fifo(u8 ep, u32 length, void *fifo_data);

36
drivers/usb/musb/musb_hcd.c
View file

@ -29,7 +29,7 @@
#define USB_MSC_BBB_GET_MAX_LUN 0xFE
/* Endpoint configuration information */
static struct musb_epinfo epinfo[3] = {
static const struct musb_epinfo epinfo[3] = {
{MUSB_BULK_EP, 1, 512}, /* EP1 - Bluk Out - 512 Bytes */
{MUSB_BULK_EP, 0, 512}, /* EP1 - Bluk In - 512 Bytes */
{MUSB_INTR_EP, 0, 64} /* EP2 - Interrupt IN - 64 Bytes */
@ -41,7 +41,7 @@ static int rh_devnum;
static u32 port_status;
/* Device descriptor */
static u8 root_hub_dev_des[] = {
static const u8 root_hub_dev_des[] = {
0x12, /* __u8 bLength; */
0x01, /* __u8 bDescriptorType; Device */
0x00, /* __u16 bcdUSB; v1.1 */
@ -63,7 +63,7 @@ static u8 root_hub_dev_des[] = {
};
/* Configuration descriptor */
static u8 root_hub_config_des[] = {
static const u8 root_hub_config_des[] = {
0x09, /* __u8 bLength; */
0x02, /* __u8 bDescriptorType; Configuration */
0x19, /* __u16 wTotalLength; */
@ -96,14 +96,14 @@ static u8 root_hub_config_des[] = {
0xff /* __u8 ep_bInterval; 255 ms */
};
static unsigned char root_hub_str_index0[] = {
static const unsigned char root_hub_str_index0[] = {
0x04, /* __u8 bLength; */
0x03, /* __u8 bDescriptorType; String-descriptor */
0x09, /* __u8 lang ID */
0x04, /* __u8 lang ID */
};
static unsigned char root_hub_str_index1[] = {
static const unsigned char root_hub_str_index1[] = {
0x1c, /* __u8 bLength; */
0x03, /* __u8 bDescriptorType; String-descriptor */
'M', /* __u8 Unicode */
@ -557,7 +557,7 @@ static int musb_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
int len = 0;
int stat = 0;
u32 datab[4];
u8 *data_buf = (u8 *) datab;
const u8 *data_buf = (u8 *) datab;
u16 bmRType_bReq;
u16 wValue;
u16 wIndex;
@ -778,25 +778,27 @@ static int musb_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
break;
case RH_GET_DESCRIPTOR | RH_CLASS:
case RH_GET_DESCRIPTOR | RH_CLASS: {
u8 *_data_buf = (u8 *) datab;
debug("RH_GET_DESCRIPTOR | RH_CLASS\n");
data_buf[0] = 0x09; /* min length; */
data_buf[1] = 0x29;
data_buf[2] = 0x1; /* 1 port */
data_buf[3] = 0x01; /* per-port power switching */
data_buf[3] |= 0x10; /* no overcurrent reporting */
_data_buf[0] = 0x09; /* min length; */
_data_buf[1] = 0x29;
_data_buf[2] = 0x1; /* 1 port */
_data_buf[3] = 0x01; /* per-port power switching */
_data_buf[3] |= 0x10; /* no overcurrent reporting */
/* Corresponds to data_buf[4-7] */
data_buf[4] = 0;
data_buf[5] = 5;
data_buf[6] = 0;
data_buf[7] = 0x02;
data_buf[8] = 0xff;
_data_buf[4] = 0;
_data_buf[5] = 5;
_data_buf[6] = 0;
_data_buf[7] = 0x02;
_data_buf[8] = 0xff;
len = min_t(unsigned int, leni,
min_t(unsigned int, data_buf[0], wLength));
break;
}
case RH_GET_CONFIGURATION:
debug("RH_GET_CONFIGURATION\n");