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path: root/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
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Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-i2c-core.c')
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-i2c-core.c34
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c b/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
index c8d0bdee3ff..7fca4798227 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
@@ -37,6 +37,10 @@ static unsigned int i2c_scan = 0;
module_param(i2c_scan, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
+static unsigned int pvr2_i2c_client_describe(struct pvr2_i2c_client *cp,
+ unsigned int detail,
+ char *buf,unsigned int maxlen);
+
static int pvr2_i2c_write(struct pvr2_hdw *hdw, /* Context */
u8 i2c_addr, /* I2C address we're talking to */
u8 *data, /* Data to write */
@@ -165,12 +169,12 @@ static int pvr2_i2c_read(struct pvr2_hdw *hdw, /* Context */
/* This is the common low level entry point for doing I2C operations to the
hardware. */
-int pvr2_i2c_basic_op(struct pvr2_hdw *hdw,
- u8 i2c_addr,
- u8 *wdata,
- u16 wlen,
- u8 *rdata,
- u16 rlen)
+static int pvr2_i2c_basic_op(struct pvr2_hdw *hdw,
+ u8 i2c_addr,
+ u8 *wdata,
+ u16 wlen,
+ u8 *rdata,
+ u16 rlen)
{
if (!rdata) rlen = 0;
if (!wdata) wlen = 0;
@@ -267,7 +271,7 @@ static int i2c_hack_cx25840(struct pvr2_hdw *hdw,
"WARNING: Disabling further access to the device"
" to prevent other foul-ups.");
// This blocks all further communication with the part.
- hdw->i2c_func[0x44] = 0;
+ hdw->i2c_func[0x44] = NULL;
pvr2_hdw_render_useless(hdw);
goto fail;
}
@@ -294,7 +298,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
int num)
{
int ret = -ENOTSUPP;
- pvr2_i2c_func funcp = 0;
+ pvr2_i2c_func funcp = NULL;
struct pvr2_hdw *hdw = (struct pvr2_hdw *)(i2c_adap->algo_data);
if (!num) {
@@ -319,7 +323,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
u16 tcnt,bcnt,offs;
if (!msgs[0].len) {
/* Length == 0 read. This is a probe. */
- if (funcp(hdw,msgs[0].addr,0,0,0,0)) {
+ if (funcp(hdw,msgs[0].addr,NULL,0,NULL,0)) {
ret = -EIO;
goto done;
}
@@ -336,7 +340,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
if (bcnt > sizeof(hdw->cmd_buffer)-1) {
bcnt = sizeof(hdw->cmd_buffer)-1;
}
- if (funcp(hdw,msgs[0].addr,0,0,
+ if (funcp(hdw,msgs[0].addr,NULL,0,
msgs[0].buf+offs,bcnt)) {
ret = -EIO;
goto done;
@@ -350,7 +354,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
/* Simple write */
ret = 1;
if (funcp(hdw,msgs[0].addr,
- msgs[0].buf,msgs[0].len,0,0)) {
+ msgs[0].buf,msgs[0].len,NULL,0)) {
ret = -EIO;
}
goto done;
@@ -705,9 +709,9 @@ int pvr2_i2c_core_check_stale(struct pvr2_hdw *hdw)
return (hdw->i2c_pend_types & PVR2_I2C_PEND_ALL) != 0;
}
-unsigned int pvr2_i2c_client_describe(struct pvr2_i2c_client *cp,
- unsigned int detail,
- char *buf,unsigned int maxlen)
+static unsigned int pvr2_i2c_client_describe(struct pvr2_i2c_client *cp,
+ unsigned int detail,
+ char *buf,unsigned int maxlen)
{
unsigned int ccnt,bcnt;
int spcfl = 0;
@@ -871,7 +875,7 @@ static void do_i2c_scan(struct pvr2_hdw *hdw)
msg[0].addr = 0;
msg[0].flags = I2C_M_RD;
msg[0].len = 0;
- msg[0].buf = 0;
+ msg[0].buf = NULL;
printk("%s: i2c scan beginning\n",hdw->name);
for (i = 0; i < 128; i++) {
msg[0].addr = i;