alloc/free quesion in ixp4xx driver
spam_from_linux_mtd at chezphil.org
Thu May 17 11:51:39 EDT 2007
Dear MTD experts,
I have been looking at the MTD ixp4xx driver
(drivers/mtd/maps/ixp4xx.c), mainly as an example of something that
uses the ixp4xx expansion bus, and I have a couple of questions. I
apologise for being a "newbie" on this subject, I have not written a
lot of kernel code.
- In ixp4xx_flash_probe(), a struct ixp4xx_flash_info in kalloc()ed.
Where is it freed?
- In ixp4xx_flash_remove() you have:
In other places where release_resource() is called I do not see a
call to kfree(). Is this right?
Most likely, this is all OK and I need to learn more about how these
functions should be used. But my thought on seeing this was that the
kfree() should have been freeing info, not info->res.
I am also uncertain about release_resource() vs. release_mem_region().
Are they interchangeable?
I have been looking at 2.6.21, but a quick check at
suggests that it is the same in your tree (if I have understood gitweb properly).
P.S. I'm subscribed to the digest, so if you Cc: me in your reply I'll
see it sooner.
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