Hello,
> I am trying to write to mydriver but get a 'Bad file number' error.
>
> int fd = open("/dev/mydriver",O_RDWR);
>
> this opens successfully as fd is not -1.
>
> ssize_t bytesToWrite = strlen(buf);
>
> value is: bytesToWrite 28
>
> ssize_t bytesWritten = write(fd,buf,bytesToWrite);
>
> value is: bytesWritten -1
>
> __android_log_print(ANDROID_LOG_INFO,__FILE__,"ANIL
> strerror(errno) %s", strerror(errno));
>
> value is: strerror(errno) Bad file number
Please use strace and let us know the full trace of system calls.
Also, if possible
could you paste the 'write' function of your driver?
thanks,
Daniel.
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