[PATCH 4.4 12/72] ACPI, PCI, irq: remove redundant check for null string pointer

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

commit 45288978859119c019eff93f0cb838a0de100bcc upstream.

source is decleared as a 4 byte char array in struct acpi_pci_routing_table
so !prt->source is a redundant null string pointer check. Detected with
smatch:

drivers/acpi/pci_irq.c:134 do_prt_fixups() warn: this array is probably
  non-NULL. 'prt->source'

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Cc: Nathan Chancellor <natechancellor@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/acpi/pci_irq.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -131,9 +131,6 @@ static void do_prt_fixups(struct acpi_pr
 		quirk = &prt_quirks[i];
 
 		/* All current quirks involve link devices, not GSIs */
-		if (!prt->source)
-			continue;
-
 		if (dmi_check_system(quirk->system) &&
 		    entry->id.segment == quirk->segment &&
 		    entry->id.bus == quirk->bus &&