From: Tejun Heo Date: Sat, 17 Feb 2007 17:24:37 +0000 (+0900) Subject: libata: fix probe_ent alloc/free bugs X-Git-Tag: v2.6.21-rc2~25^2~41 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=4d05447ec702364b8a2aebb4d625b16479268575;p=linux-2.6-omap-h63xx.git libata: fix probe_ent alloc/free bugs ata_probe_ent_alloc() had a temporary hack such that devm_kzalloc() was used for allocation if devres had been previously initialized on the device; otherwise, plain kzalloc() was used. This was to make the code useable from both the old and devres-aware libata drivers during transition. This hack made ata_sas_port_alloc() unable to determine how the probe_ent is allocated, causing double free in some cases. Remove the now-unneeded hack and make ata_sas_port_alloc() use devm_kfree(). Signed-off-by: Tejun Heo Cc: James Bottomley Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 407e7e15c25..794f327e398 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5948,11 +5948,7 @@ ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port) { struct ata_probe_ent *probe_ent; - /* XXX - the following if can go away once all LLDs are managed */ - if (!list_empty(&dev->devres_head)) - probe_ent = devm_kzalloc(dev, sizeof(*probe_ent), GFP_KERNEL); - else - probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL); + probe_ent = devm_kzalloc(dev, sizeof(*probe_ent), GFP_KERNEL); if (!probe_ent) { printk(KERN_ERR DRV_NAME "(%s): out of memory\n", kobject_name(&(dev->kobj))); diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index d1bf1ca4f71..7bb782b5ce0 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3235,7 +3235,7 @@ struct ata_port *ata_sas_port_alloc(struct ata_host *host, ata_port_init(ap, host, ent, 0); ap->lock = shost->host_lock; - kfree(ent); + devm_kfree(host->dev, ent); return ap; } EXPORT_SYMBOL_GPL(ata_sas_port_alloc);