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List: linux-kernel
Subject: rmmod while module is in use
From: Davide Rossetti <davide.rossetti () roma1 ! infn ! it>
Date: 2005-02-17 12:47:39
Message-ID: 4214926B.3030707 () roma1 ! infn ! it
[Download RAW message or body]
maybe RTFM...
a module:
- char device driver for..
- a PCI device
any clue as to how to protect from module unloading while there is still
some process opening it??? have I to sleep in the remove_one() pci
driver function till last process closes its file descriptor???
static void __devexit apedev_remove_one(struct pci_dev *pdev)
{
ApeDev* apedev = pci_get_drvdata(pdev);
if(test_bit(APEDEV_FLAG_OPEN, &apedev->flags)) {
PERROR("still open flag on!!! (flags=0x%08x)\n", apedev->flags);
// sleep here till it gets closed...
}
...
}
static struct pci_driver apedev_driver = {
.name = DEVNAME,
.id_table = apedev_pci_tbl,
.probe = apedev_init_one,
.remove = __devexit_p(apedev_remove_one),
};
-
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