Re: [PATCH] i2c.h: Fix another gcc 4.0 compile failure
From: Corey Minyard
Date: Thu Feb 24 2005 - 10:16:29 EST
Greg, Mickey,
Since I already some of this patch done in the stuff I was working on, I
finished it out. Here's a patch that cleans up all of them and a few
other small things I found.
-Corey
Greg KH wrote:
On Sun, Feb 20, 2005 at 07:40:24AM -0800, Mickey Stein wrote:
Greg KH wrote:
On Sat, Feb 19, 2005 at 08:58:48AM -0800, Mickey Stein wrote:
From: Mickey Stein
Versions: linux-2.6.11-rc4-bk7, gcc4 (GCC) 4.0.0 20050217 (latest fc
rawhide from 19Feb DL)
gcc4 cvs seems to dislike "include/linux/i2c.h file":
Error msg: include/linux/i2c.h:{55,194} error: array type has
incomplete element type
A. Daplas has recently done a workaround for this on another header
file. A thread discussing this
can be found by following the link below:
http://gcc.gnu.org/ml/gcc/2005-02/msg00053.html
The patch changes the array declaration from "struct x y[]" format to
"struct x *y".
I realize its only a workaround, but the gcc guys seem to be aware of
this.
** Note: I'm a noob at this, so feel free to make chopped liver out of
this if its incorrect.
patch below is also attached since I'm not sure formatting survives
the cut&paste.
The patch looks sane, but before I apply it, care to also fix up all of
the function pointers that are affected by this patch? Also the
i2c_transfer() function itself should be changed (not just the header
file.)
thanks,
greg k-h
Greg,
I took a look for other references similar to those in my first take at
this and found a couple more files.
Attached is another patch that hopefully addresses the all the similar
cases. I tried it on today's (-bk8) kernel,
with all i2c switches enabled.
What about the i2c drivers that implement the master_xfer function? You
will now have a bunch of compiler warnings if you build them with this
patch, right?
thanks,
greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Clean up some general I2C things. Convert all the msg[] in functions
to *msg, fix some grammar, put () around all the #defines that
are compound to avoid nasty side-effects, and convert some
initializations to C99 versions to make them more change-resistant.
Signed-off-by: Corey Minyard <minyard@xxxxxxx>
Index: linux-2.6.11-rc4/include/linux/i2c.h
===================================================================
--- linux-2.6.11-rc4.orig/include/linux/i2c.h
+++ linux-2.6.11-rc4/include/linux/i2c.h
@@ -55,7 +55,7 @@
/* Transfer num messages.
*/
-extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],int num);
+extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msg, int num);
/*
* Some adapter types (i.e. PCF 8584 based ones) may support slave behaviuor.
@@ -190,11 +190,11 @@
char name[32]; /* textual description */
unsigned int id;
- /* If an adapter algorithm can't to I2C-level access, set master_xfer
+ /* If an adapter algorithm can't do I2C-level access, set master_xfer
to NULL. If an adapter algorithm can do SMBus access, set
smbus_xfer. If set to NULL, the SMBus protocol is simulated
using common I2C messages */
- int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg msgs[],
+ int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs,
int num);
int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write,
@@ -423,22 +423,22 @@
#define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC 0x40000000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_BYTE I2C_FUNC_SMBUS_READ_BYTE | \
- I2C_FUNC_SMBUS_WRITE_BYTE
-#define I2C_FUNC_SMBUS_BYTE_DATA I2C_FUNC_SMBUS_READ_BYTE_DATA | \
- I2C_FUNC_SMBUS_WRITE_BYTE_DATA
-#define I2C_FUNC_SMBUS_WORD_DATA I2C_FUNC_SMBUS_READ_WORD_DATA | \
- I2C_FUNC_SMBUS_WRITE_WORD_DATA
-#define I2C_FUNC_SMBUS_BLOCK_DATA I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
-#define I2C_FUNC_SMBUS_I2C_BLOCK I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
- I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
-#define I2C_FUNC_SMBUS_I2C_BLOCK_2 I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
- I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2
-#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC
-#define I2C_FUNC_SMBUS_WORD_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \
- I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC
+#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
+ I2C_FUNC_SMBUS_WRITE_BYTE)
+#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
+ I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
+#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
+ I2C_FUNC_SMBUS_WRITE_WORD_DATA)
+#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
+#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
+ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
+#define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
+ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
+#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC (I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC)
+#define I2C_FUNC_SMBUS_WORD_DATA_PEC (I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \
+ I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC)
#define I2C_FUNC_SMBUS_READ_BYTE_PEC I2C_FUNC_SMBUS_READ_BYTE_DATA
#define I2C_FUNC_SMBUS_WRITE_BYTE_PEC I2C_FUNC_SMBUS_WRITE_BYTE_DATA
@@ -447,14 +447,14 @@
#define I2C_FUNC_SMBUS_BYTE_PEC I2C_FUNC_SMBUS_BYTE_DATA
#define I2C_FUNC_SMBUS_BYTE_DATA_PEC I2C_FUNC_SMBUS_WORD_DATA
-#define I2C_FUNC_SMBUS_EMUL I2C_FUNC_SMBUS_QUICK | \
- I2C_FUNC_SMBUS_BYTE | \
- I2C_FUNC_SMBUS_BYTE_DATA | \
- I2C_FUNC_SMBUS_WORD_DATA | \
- I2C_FUNC_SMBUS_PROC_CALL | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
- I2C_FUNC_SMBUS_I2C_BLOCK
+#define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
+ I2C_FUNC_SMBUS_BYTE | \
+ I2C_FUNC_SMBUS_BYTE_DATA | \
+ I2C_FUNC_SMBUS_WORD_DATA | \
+ I2C_FUNC_SMBUS_PROC_CALL | \
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
+ I2C_FUNC_SMBUS_I2C_BLOCK)
/*
* Data for SMBus Messages
Index: linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-bit.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/algos/i2c-algo-bit.c
+++ linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-bit.c
@@ -466,7 +466,7 @@
}
static int bit_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg msgs[], int num)
+ struct i2c_msg *msgs, int num)
{
struct i2c_msg *pmsg;
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
Index: linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-pcf.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/algos/i2c-algo-pcf.c
+++ linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-pcf.c
@@ -332,7 +332,7 @@
}
static int pcf_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg msgs[],
+ struct i2c_msg *msgs,
int num)
{
struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;
Index: linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-pca.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/algos/i2c-algo-pca.c
+++ linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-pca.c
@@ -178,7 +178,7 @@
}
static int pca_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg msgs[],
+ struct i2c_msg *msgs,
int num)
{
struct i2c_algo_pca_data *adap = i2c_adap->algo_data;
Index: linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-ite.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/algos/i2c-algo-ite.c
+++ linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-ite.c
@@ -600,7 +600,7 @@
* verify that the bus is not busy or in some unknown state.
*/
static int iic_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg msgs[],
+ struct i2c_msg *msgs,
int num)
{
struct i2c_algo_iic_data *adap = i2c_adap->algo_data;
@@ -713,14 +713,11 @@
/* -----exported algorithm data: ------------------------------------- */
static struct i2c_algorithm iic_algo = {
- "ITE IIC algorithm",
- I2C_ALGO_IIC,
- iic_xfer, /* master_xfer */
- NULL, /* smbus_xfer */
- NULL, /* slave_xmit */
- NULL, /* slave_recv */
- algo_control, /* ioctl */
- iic_func, /* functionality */
+ .name = "ITE IIC algorithm",
+ .id = I2C_ALGO_IIC,
+ .master_xfer = iic_xfer,
+ .ioctl = algo_control,
+ .functionality = iic_func,
};
Index: linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-sgi.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/algos/i2c-algo-sgi.c
+++ linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-sgi.c
@@ -131,7 +131,7 @@
return 0;
}
-static int sgi_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[],
+static int sgi_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
int num)
{
struct i2c_algo_sgi_data *adap = i2c_adap->algo_data;
Index: linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-sibyte.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/algos/i2c-algo-sibyte.c
+++ linux-2.6.11-rc4/drivers/i2c/algos/i2c-algo-sibyte.c
@@ -136,14 +136,11 @@
/* -----exported algorithm data: ------------------------------------- */
static struct i2c_algorithm i2c_sibyte_algo = {
- "SiByte algorithm",
- I2C_ALGO_SIBYTE,
- NULL, /* master_xfer */
- smbus_xfer, /* smbus_xfer */
- NULL, /* slave_xmit */
- NULL, /* slave_recv */
- algo_control, /* ioctl */
- bit_func, /* functionality */
+ .name = "SiByte algorithm",
+ .id = I2C_ALGO_SIBYTE,
+ .smbus_xfer = smbus_xfer,
+ .ioctl = algo_control,
+ .functionality = bit_func,
};
/*
Index: linux-2.6.11-rc4/drivers/i2c/busses/i2c-mpc.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/busses/i2c-mpc.c
+++ linux-2.6.11-rc4/drivers/i2c/busses/i2c-mpc.c
@@ -233,7 +233,7 @@
return length;
}
-static int mpc_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
+static int mpc_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
{
struct i2c_msg *pmsg;
int i;
Index: linux-2.6.11-rc4/drivers/i2c/busses/i2c-s3c2410.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/busses/i2c-s3c2410.c
+++ linux-2.6.11-rc4/drivers/i2c/busses/i2c-s3c2410.c
@@ -534,7 +534,7 @@
*/
static int s3c24xx_i2c_xfer(struct i2c_adapter *adap,
- struct i2c_msg msgs[], int num)
+ struct i2c_msg *msgs, int num)
{
struct s3c24xx_i2c *i2c = (struct s3c24xx_i2c *)adap->algo_data;
int retry;
Index: linux-2.6.11-rc4/drivers/i2c/busses/i2c-au1550.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/busses/i2c-au1550.c
+++ linux-2.6.11-rc4/drivers/i2c/busses/i2c-au1550.c
@@ -253,7 +253,7 @@
}
static int
-au1550_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
+au1550_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
{
struct i2c_au1550_data *adap = i2c_adap->algo_data;
struct i2c_msg *p;
Index: linux-2.6.11-rc4/drivers/i2c/busses/i2c-iop3xx.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/busses/i2c-iop3xx.c
+++ linux-2.6.11-rc4/drivers/i2c/busses/i2c-iop3xx.c
@@ -361,7 +361,7 @@
* master_xfer() - main read/write entry
*/
static int
-iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[],
+iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
int num)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
Index: linux-2.6.11-rc4/drivers/i2c/busses/i2c-keywest.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/busses/i2c-keywest.c
+++ linux-2.6.11-rc4/drivers/i2c/busses/i2c-keywest.c
@@ -399,7 +399,7 @@
*/
static int
keywest_xfer( struct i2c_adapter *adap,
- struct i2c_msg msgs[],
+ struct i2c_msg *msgs,
int num)
{
struct keywest_chan* chan = i2c_get_adapdata(adap);
Index: linux-2.6.11-rc4/drivers/i2c/busses/i2c-ibm_iic.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/busses/i2c-ibm_iic.c
+++ linux-2.6.11-rc4/drivers/i2c/busses/i2c-ibm_iic.c
@@ -549,7 +549,7 @@
* Generic master transfer entrypoint.
* Returns the number of processed messages or error (<0)
*/
-static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
+static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
{
struct ibm_iic_private* dev = (struct ibm_iic_private*)(i2c_get_adapdata(adap));
volatile struct iic_regs __iomem *iic = dev->vaddr;
Index: linux-2.6.11-rc4/drivers/i2c/i2c-core.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/i2c/i2c-core.c
+++ linux-2.6.11-rc4/drivers/i2c/i2c-core.c
@@ -583,7 +583,7 @@
* ----------------------------------------------------
*/
-int i2c_transfer(struct i2c_adapter * adap, struct i2c_msg msgs[],int num)
+int i2c_transfer(struct i2c_adapter * adap, struct i2c_msg *msgs,int num)
{
int ret;
Index: linux-2.6.11-rc4/drivers/media/video/bttv-i2c.c
===================================================================
--- linux-2.6.11-rc4.orig/drivers/media/video/bttv-i2c.c
+++ linux-2.6.11-rc4/drivers/media/video/bttv-i2c.c
@@ -245,7 +245,7 @@
return retval;
}
-static int bttv_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
+static int bttv_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
{
struct bttv *btv = i2c_get_adapdata(i2c_adap);
int retval = 0;