ioctl timeouts

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Hi all,

I am using ioctl() to send a vendor unique command to a disk drive via the libata driver stack.  The command is a security erase command and it takes several minutes for the command to complete.  During this time, my driver is timing out.

Now, I don't really have a problem with the driver timing out.   What I'm wondering is whether there's a way to make the ioctl() timeout faster so that my program can continue execution.  I see that in the sg_io_hdr_t struct passed to ioctl() there is a timeout value specified in ms.  I've entered values between 5 and 500 but it is taking 90-100 seconds for the command to return and for my program to continue.

Does anyone have a suggestion on how to make this ioctl() timeout faster and return to executing my program?

Thanks!
-Russell Sloan

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