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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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