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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-05-26 21:54:27 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-05-26 21:54:27 -0400 |
| commit | aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d (patch) | |
| tree | 3e343cd5493d442d1a26dc7a421422d84698831e /drivers/scsi/sata_vsc.c | |
| parent | bef9c558841604116704e10b3d9ff3dbf4939423 (diff) | |
| download | kernel_samsung_smdk4412-aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d.zip kernel_samsung_smdk4412-aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d.tar.gz kernel_samsung_smdk4412-aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d.tar.bz2 | |
libata: Fix use-after-iounmap
Jens Axboe pointed out that the iounmap() call in libata was occurring
too early, and some drivers (ahci, probably others) were using ioremap'd
memory after it had been unmapped.
The patch should address that problem by way of improving the libata
driver API:
* move ->host_stop() call after all ->port_stop() calls have occurred.
* create default helper function ata_host_stop(), and move iounmap()
call there.
* add ->host_stop_prewalk() hook, use it in sata_qstor.c (hi Mark).
sata_qstor appears to require the host-stop-before-port-stop ordering
that existed prior to applying the attached patch.
Diffstat (limited to 'drivers/scsi/sata_vsc.c')
| -rw-r--r-- | drivers/scsi/sata_vsc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c index 2c28f0a..f67c343 100644 --- a/drivers/scsi/sata_vsc.c +++ b/drivers/scsi/sata_vsc.c @@ -230,6 +230,7 @@ static struct ata_port_operations vsc_sata_ops = { .scr_write = vsc_sata_scr_write, .port_start = ata_port_start, .port_stop = ata_port_stop, + .host_stop = ata_host_stop, }; static void __devinit vsc_sata_setup_port(struct ata_ioports *port, unsigned long base) |