From 1aa56cca5bfa396c791e93b38e4776ef39b590a7 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Feb 2007 22:33:21 +0900 Subject: [PATCH] libata: clear drvdata in ata_host_release(), take#2 Clearing drvdata in ->remove_one causes NULL pointer deference. Clear drvdata only in ata_host_release() after all resources are freed. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 3 ++- drivers/ata/pata_cs5520.c | 1 - drivers/ata/pata_isapnp.c | 1 - drivers/ata/pata_platform.c | 1 - 4 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index c8d44a7c40..17ad152714 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5680,6 +5680,8 @@ static void ata_host_release(struct device *gendev, void *res) if (host->ops->host_stop) host->ops->host_stop(host); + + dev_set_drvdata(gendev, NULL); } /** @@ -5902,7 +5904,6 @@ int ata_device_add(const struct ata_probe_ent *ent) err_out: devres_release_group(dev, ata_device_add); - dev_set_drvdata(dev, NULL); VPRINTK("EXIT, returning %d\n", rc); return 0; } diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c index c1334c6c41..8ff2d58c59 100644 --- a/drivers/ata/pata_cs5520.c +++ b/drivers/ata/pata_cs5520.c @@ -306,7 +306,6 @@ static void __devexit cs5520_remove_one(struct pci_dev *pdev) struct ata_host *host = dev_get_drvdata(dev); ata_host_detach(host); - dev_set_drvdata(dev, NULL); } /** diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c index d5f2e85e28..1a61cc8917 100644 --- a/drivers/ata/pata_isapnp.c +++ b/drivers/ata/pata_isapnp.c @@ -128,7 +128,6 @@ static void isapnp_remove_one(struct pnp_dev *idev) struct ata_host *host = dev_get_drvdata(dev); ata_host_detach(host); - dev_set_drvdata(dev, NULL); } static struct pnp_device_id isapnp_devices[] = { diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c index 02ea95fcba..4b82a5435a 100644 --- a/drivers/ata/pata_platform.c +++ b/drivers/ata/pata_platform.c @@ -228,7 +228,6 @@ static int __devexit pata_platform_remove(struct platform_device *pdev) struct ata_host *host = dev_get_drvdata(dev); ata_host_detach(host); - dev_set_drvdata(dev, NULL); return 0; } -- 2.39.5