> Please include all the debugging information you can here
check_mbim_available function was modified like this:
check_mbim_available (void)
{
int kver_fd = -1;
ssize_t read_count;
char kversion[100];
char *cdc_mbim_module_path;
struct stat buf;
kver_fd = open(OSRELEASE_FILE, O_RDONLY);
if (kver_fd > -1) {
read_count = read(kver_fd, &kversion, 100);
if (read_count > 0) {
asprintf(&cdc_mbim_module_path, "%s/%s/%s",
MODULES_PATH,
kversion,
CDC_MBIM_DRIVER_PATH);
+ modeswitch_log("\n -> Let's check cdc_mbim_module_path : %s\n",
cdc_mbim_module_path);
if (!stat(cdc_mbim_module_path, &buf))
goto success;
if (!stat(CDC_MBIM_SYS_PATH, &buf))
goto success;
}
}
free(cdc_mbim_module_path);
return 0;
success:
free(cdc_mbim_module_path);
return 1;
}
In result log which was on expired pastebin it was visible that patch
that was printed after "Let's check cdc_mbim_module_path" message
include line break. It was right after kernel version, that filled by
#define OSRELEASE_FILE "/proc/sys/kernel/osrelease"
Example:
~$ cat /proc/sys/kernel/osrelease
4.19.0-041900-generic
~$ cat /proc/sys/kernel/osrelease | hexdump
0000000 2e34 3931 302e 302d 3134 3039 2d30 6567
0000010 656e 6972 0a63
0000016
Problem is that string in /proc/sys/kernel/osrelease include line break
symbol, and nothing in dispatcher-c-rewrite.patch drop this new line
symbol, so when check_mbim_available trying to check if cdc_mbim kernel
module is present, it looking for "4.19.0-041900-generic\n" (\n is not
visible but it's part of the string) instead of "4.19.0-041900-generic"
folder.
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https://bugs.launchpad.net/bugs/1800794
Title:
usb-modeswitch can't apply Configuration=0 to Snapdragon X12 LTE
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