Hello Drasko,
The end goal it's to have a safe state of the used JTAG adapter at the
end of the executable file.
With this patch => Fix: Correctly exit function: ft2232_init when an
error occurred
I wish correct the status at the end of ft2232_init function when an
error occured.
At this moment, in function: ft2232_init the JTAG handle is acquire
with the funtion: ft2232_init_ftd2xx or ft2232_init_libftdi and 131072
bytes are allocate for the variable: ft2232_buffer.
But when an error occured, the JTAG handle isn't free and all allocate
bytes aren't free.
To correct this on the layer ft2232, it's better to clarify the
function: ft2232_init.
And for the end goal, I follow that as speack Laurent:
Open
Init
Deinit
Close
Open it's to acquire the JTAG handle.
Init it's to set all parameters and the pinning of the JTAG adapter.
Deinit it's to be on a safe state with the JTAG adapter.
Close it's to free the JTAG handle.
With this first patch, I have only divided functions and add the part
to close handle and free the bytes of the variable: ft2232_buffer when
an error occured.
So I have take the first part of the function: ft2232_init_ftd2xx and
put to the function: ft2232_open_ftd2xx (from line: 2118 to line: 2230)
And I have remove the unnecessary variables.
The second part of the function: ft2232_init_ftd2xx stay on this
function (from line: 2231 to line: 2278)
I have add the necessary variables.
It's the same work with the function: ft2232_init_libftdi.
So I have take the first part of the function: ft2232_init_libftdi and
put to the function: ft2232_open_libftdi (from line: 2296 to line: 2332)
And I have remove the unnecessary variables.
The second part of the function: ft2232_init_libftdi stay on this
function (from line: 2333 to line: 2366)
I have add the necessary variables.
To not make a lot of change on the function: ft2232_init, I have only
divide the function on two parts and add the part to close handle and
free the bytes of the variable: ft2232_buffer when an error occured.
So the first part of the function: ft2232_init stay on this function
(from line: 2421 to line: 2466)
I have remove the unnecessary variables.
I have change the functions: ft2232_init_ftd2xx and ft2232_init_libftdi
by the functions: ft2232_open_ftd2xx and ft2232_open_libftdi (because
it's the first part of the functions: ft2232_init_ftd2xx and
ft2232_init_libftdi)
I have take the second part of the function: ft2232_init and put to the
function: ft2232_init_sub (from line: 2467 to line: 2508)
I have add the necessary variables.
I have add the call of functions: ft2232_init_ftd2xx and
ft2232_init_libftdi (because it's the second part of these functions)
And to identify the case of an error occured before the JTAG handle be
acquire, I have add:
if (retval != ERROR_OK)
return retval;
(Because if an error occured during the acquire of the JTAG handle, I
think that the JTAG handle stay free.)
To correctly free the JTAG handle and free the bytes of the variable:
ft2232_buffer when an error occured. I have add:
retval = ft2232_init_sub();
if (retval != ERROR_OK)
{
#if BUILD_FT2232_FTD2XX == 1
FT_Close(ftdih);
#elif BUILD_FT2232_LIBFTDI == 1
ftdi_usb_close(&ftdic);
ftdi_deinit(&ftdic);
#endif
if(ft2232_buffer)
free(ft2232_buffer);
ft2232_buffer = NULL;
return retval;
}
(That is the content of the function: ft2232_quit (from line: 3231 to
line: 3242))
The little modification of the free for the variable: ft2232_buffer,
it's to only free the memory when is necessary (and possible).
--
Regards,
Sébastien Farquet
http://www.amontec.com/
Amontec JTAGkey-2 : High speed USB JTAG interface
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