Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 04/13] ide: fix race in device_create | Date | Tue, 20 May 2008 15:34:51 -0700 |
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There is a race from when a device is created with device_create() and then the drvdata is set with a call to dev_set_drvdata() in which a sysfs file could be open, yet the drvdata will be NULL, causing all sorts of bad things to happen.
This patch fixes the problem by using the new function, device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/ide/ide-probe.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 34b0d4f..655ec7e 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -648,13 +648,12 @@ static int ide_register_port(ide_hwif_t *hwif) get_device(&hwif->gendev); - hwif->portdev = device_create(ide_port_class, &hwif->gendev, - MKDEV(0, 0), hwif->name); + hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev, + MKDEV(0, 0), hwif, hwif->name); if (IS_ERR(hwif->portdev)) { ret = PTR_ERR(hwif->portdev); device_unregister(&hwif->gendev); } - dev_set_drvdata(hwif->portdev, hwif); out: return ret; } -- 1.5.5.1
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