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authorCatalin Marinas <catalin.marinas@arm.com>2013-05-15 16:49:35 +0000
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-05-15 21:42:24 +0200
commit7a26b53070f0099dfcfc9d499458de861c5c4859 (patch)
tree89bd2af1edb86fb2ad99662460ec42f98cbaa26f /drivers/acpi
parent0ab5bb64937d76c660c29813d8de0f4b47bf7550 (diff)
downloadvexpress-lsk-7a26b53070f0099dfcfc9d499458de861c5c4859.tar.gz
ACPI / scan: Fix memory leak on acpi_scan_init_hotplug() error path
Following commit 6b772e8f9 (ACPI: Update PNPID match handling for notify), the acpi_scan_init_hotplug() calls acpi_set_pnp_ids() which allocates acpi_hardware_id and copies a few strings (kstrdup). If the devices does not have hardware_id set, the function exits without freeing the previously allocated ids (and kmemleak complains). This patch calls simply changes 'return' on error to a 'goto out' which calls acpi_free_pnp_ids(). Reported-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Toshi Kani <toshi.kani@hp.com> Tested-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/scan.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index fe158fd4f1d..c1bc608339a 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1785,7 +1785,7 @@ static void acpi_scan_init_hotplug(acpi_handle handle, int type)
acpi_set_pnp_ids(handle, &pnp, type);
if (!pnp.type.hardware_id)
- return;
+ goto out;
/*
* This relies on the fact that acpi_install_notify_handler() will not
@@ -1800,6 +1800,7 @@ static void acpi_scan_init_hotplug(acpi_handle handle, int type)
}
}
+out:
acpi_free_pnp_ids(&pnp);
}