tty: serial: jsm: constify pci_device_id.
authorArvind Yadav <arvind.yadav.cs@gmail.com>
Sun, 23 Jul 2017 10:01:08 +0000 (15:31 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 30 Jul 2017 14:35:28 +0000 (07:35 -0700)
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
   2442    1088       8    3538     dd2 tty/serial/jsm/jsm_driver.o

File size After adding 'const':
   text    data     bss     dec     hex filename
   3082     448       8    3538     dd2 tty/serial/jsm/jsm_driver.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/jsm/jsm_driver.c

index a119f11..102d499 100644 (file)
@@ -304,7 +304,7 @@ static void jsm_remove_one(struct pci_dev *pdev)
        kfree(brd);
 }
 
-static struct pci_device_id jsm_pci_tbl[] = {
+static const struct pci_device_id jsm_pci_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
        { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
        { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },