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authorAlexey Starikovskiy <astarikovskiy@suse.de>2007-08-31 09:05:26 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-08-30 22:20:13 -0700
commit2d8348b429b4ae5cc47449c787881221fe43af4b (patch)
tree3d3fd11a86f03d7d0655e5c1906198d274c8ba97 /drivers/acpi
parente70da5634835ecd8abb68d14cfc27384d01dd201 (diff)
ACPI: EC: Check if boot_ec was really found in DSDT
acpi_get_devices() returns success if it did not find any device. We have to check for this case. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Daniel Ritz <daniel.ritz-ml@swissonline.ch> Tested-by: Luca <kronos.it@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/ec.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 43749c86861f..3f7935ab0cf5 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -886,7 +886,8 @@ int __init acpi_ec_ecdt_probe(void)
printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
boot_ec, NULL);
- if (ACPI_FAILURE(status))
+ /* Check that acpi_get_devices actually find something */
+ if (ACPI_FAILURE(status) || !boot_ec->handle)
goto error;
}