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ACPI: dock: fix oops when _DCK evaluation fails 

Data returned by acpi_get_name in acpi_buffer is not acpi_object and
therefore should not be cast to it, otherwise we'll get an nice oops
trying to print error message.

Also print name of the ACPI object corresponding to the docking station
and elevate severity of the message printed when _DCK fails to KERN_ERR.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Dmitry Torokhov 2007-07-18 01:10:24 -04:00 committed by Len Brown
parent 3f8698d4d3
commit 9254bc845d
1 changed files with 4 additions and 4 deletions
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8
drivers/acpi/dock.c
View File

@ -396,12 +396,11 @@ static void handle_dock(struct dock_station *ds, int dock)
union acpi_object arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_get_name(ds->handle, ACPI_FULL_PATHNAME, &name_buffer);
obj = name_buffer.pointer;
printk(KERN_INFO PREFIX "%s\n", dock ? "docking" : "undocking");
printk(KERN_INFO PREFIX "%s - %s\n",
(char *)name_buffer.pointer, dock ? "docking" : "undocking");
/* _DCK method has one argument */
arg_list.count = 1;
@ -410,7 +409,8 @@ static void handle_dock(struct dock_station *ds, int dock)
arg.integer.value = dock;
status = acpi_evaluate_object(ds->handle, "_DCK", &arg_list, &buffer);
if (ACPI_FAILURE(status))
pr_debug("%s: failed to execute _DCK\n", obj->string.pointer);
printk(KERN_ERR PREFIX "%s - failed to execute _DCK\n",
(char *)name_buffer.pointer);
kfree(buffer.pointer);
kfree(name_buffer.pointer);
}