[Xenomai] rt_imx_uart compilation

[Xenomai] rt_imx_uart compilation

[Jean-Baptiste Tredez]

Hello,

I tried to compile linux kernel 3.18.12 with xenomai 2.6.4 and rtserial 
enabled on arm imx6. The compilation failed with :
   CC [M]  drivers/xenomai/serial/rt_imx_uart.o
drivers/xenomai/serial/rt_imx_uart.c:39:27: fatal error: 
mach/hardware.h: No such file or directory
  #include <mach/hardware.h>
                            ^

I can see in the file :
#include <mach/hardware.h>
#include <mach/imx-uart.h>

The requested file seem to be in arch/arm/mach-imx/hardware.h and 
imx-uart.h in arch/arm/include/debug/imx-uart.h so i tried to correct 
the path with :
#include <../mach-imx/hardware.h>
#include <debug/imx-uart.h>

The compilation failed with :

   CC [M]  drivers/xenomai/serial/rt_imx_uart.o
drivers/xenomai/serial/rt_imx_uart.c: In function 'rt_imx_uart_probe':
drivers/xenomai/serial/rt_imx_uart.c:1465:21: error: dereferencing 
pointer to incomplete type
   if (pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
                      ^
drivers/xenomai/serial/rt_imx_uart.c:1465:31: error: 
'IMXUART_HAVE_RTSCTS' undeclared (first use in this function)
   if (pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
                                ^
drivers/xenomai/serial/rt_imx_uart.c:1465:31: note: each undeclared 
identifier is reported only once for each function it appears in
drivers/xenomai/serial/rt_imx_uart.c:1467:21: error: dereferencing 
pointer to incomplete type
   if (pdata && (pdata->flags & IMXUART_USE_DCEDTE))
                      ^
drivers/xenomai/serial/rt_imx_uart.c:1467:31: error: 
'IMXUART_USE_DCEDTE' undeclared (first use in this function)
   if (pdata && (pdata->flags & IMXUART_USE_DCEDTE))
                                ^
drivers/xenomai/serial/rt_imx_uart.c:1469:20: error: dereferencing 
pointer to incomplete type
   if (pdata && pdata->init) {
                     ^
drivers/xenomai/serial/rt_imx_uart.c:1470:14: error: dereferencing 
pointer to incomplete type
    err = pdata->init(pdev);
               ^
drivers/xenomai/serial/rt_imx_uart.c:1489:20: error: dereferencing 
pointer to incomplete type
   if (pdata && pdata->exit)
                     ^
drivers/xenomai/serial/rt_imx_uart.c:1490:8: error: dereferencing 
pointer to incomplete type
    pdata->exit(pdev);
         ^
drivers/xenomai/serial/rt_imx_uart.c: In function 'rt_imx_uart_remove':
drivers/xenomai/serial/rt_imx_uart.c:1520:20: error: dereferencing 
pointer to incomplete type
   if (pdata && pdata->exit)
                     ^
drivers/xenomai/serial/rt_imx_uart.c:1521:8: error: dereferencing 
pointer to incomplete type
    pdata->exit(pdev);
         ^

Do you have an idea ?


Jean-Baptiste Trédez

Re: [Xenomai] rt_imx_uart compilation

[Gilles Chanteperdrix]

On Mon, Jan 25, 2016 at 05:44:48PM +0100, Jean-Baptiste Tredez wrote:
> Hello,
> 
> I tried to compile linux kernel 3.18.12 with xenomai 2.6.4 and rtserial 
> enabled on arm imx6. The compilation failed with :
>    CC [M]  drivers/xenomai/serial/rt_imx_uart.o
> drivers/xenomai/serial/rt_imx_uart.c:39:27: fatal error: 
> mach/hardware.h: No such file or directory
>(...)
> Do you have an idea ?

First Xenomai 2.6.4 can not be used with Linux 3.18, you need
Xenomai 2.6 git tree for Linux 3.18. But it is very possible that
rt_imx_uart.c is broken. The fix is to have a look at the
corresponding mainline driver, and adapt it to RTDM.

Regards.

-- 
					    Gilles.
https://click-hack.org