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SubjectRe: [PATCH v5 2/2] efi: a misc char interface for user to update efi firmware
On Wed, 02 Sep, at 06:31:36AM, Kweh Hock Leong wrote:
>
> I have done an experiment on that by using the misc char device file note.
> I included the flush() callback function to the fops. In flush(), I put a printk()
> and return -EINVAL. When I perform "cat XXX > /dev/XXX" on Intel Quark
> Galileo platform, I found that the flush() is not just being called at file
> close, it will also being called before the file write. And the error return, that I
> forced in the flush(), does not show up at shell terminal. This is the reason that
> I did not follow James recommendation and figure out to do it at write().

OK, that's interesting. Which cat tool is included with the Quark BSP?

--
Matt Fleming, Intel Open Source Technology Center


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