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| author |   Loren M. Lang <lorenl@alzatex.com> | 2006-02-03 03:04:59 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-03 08:32:12 -0800 |
| commit | 9ea244b4b545ecb323d042a0df5c080edefcd1fc (patch) | |
| tree | 65e219ea529ac8089fa5415d8b350cf0fd3c62e5 /drivers/ide | |
| parent | [PATCH] ide: set latency when resetting it821x out of firmware mode (diff) | |
| download | linux-dev-9ea244b4b545ecb323d042a0df5c080edefcd1fc.tar.xz linux-dev-9ea244b4b545ecb323d042a0df5c080edefcd1fc.zip | |
[PATCH] RocketPoint 1520 [hpt366] fails clock stabilization
I just purchased a HighPoint Rocket 1520 SATA controller. There seems to
be no libata driver (yet), but there is an ide driver, hpt366. When the
driver gets loaded, it causes a kernel NULL pointer dereference in
pci_bus_clock_list. It seems to be because the driver is waiting for clock
stabilization in init_hpt37x() which never comes. The driver just
continues on with the pci drvdata set to NULL, instead of a valid clock
entry. The following patch prevents the NULL dereference from happening,
but instead exit with an error.
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/pci/hpt366.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c index 7b589d948bf9..940bdd4c5784 100644 --- a/drivers/ide/pci/hpt366.c +++ b/drivers/ide/pci/hpt366.c @@ -1288,6 +1288,10 @@ static void __devinit hpt37x_clocking(ide_hwif_t *hwif) goto init_hpt37X_done; } } + if (!pci_get_drvdata(dev)) { + printk("No Clock Stabilization!!!\n"); + return; + } pll_recal: if (adjust & 1) pll -= (adjust >> 1); |