usb: mtu3: constify struct debugfs_reg32

Commit Message

Rikard Falkeborn May 8, 2020, 9:44 p.m. UTC

mtu3_prb_regs is never changed and can therefore be made const.

This allows the compiler to put it in the text section instead of the
data section.

Before:
   text    data     bss     dec     hex filename
  19966    7120       0   27086    69ce drivers/usb/mtu3/mtu3_debugfs.o

After:
   text    data     bss     dec     hex filename
  20142    6992       0   27134    69fe drivers/usb/mtu3/mtu3_debugfs.o

Signed-off-by: Rikard Falkeborn <[e-mail]>
---
 drivers/usb/mtu3/mtu3_debugfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/usb/mtu3/mtu3_debugfs.c b/drivers/usb/mtu3/mtu3_debugfs.c
index c96e5dab0a48..fdeade6254ae 100644
--- a/drivers/usb/mtu3/mtu3_debugfs.c
+++ b/drivers/usb/mtu3/mtu3_debugfs.c
@@ -276,7 +276,7 @@  static const struct file_operations mtu3_ep_fops = {
 	.release = single_release,
 };
 
-static struct debugfs_reg32 mtu3_prb_regs[] = {
+static const struct debugfs_reg32 mtu3_prb_regs[] = {
 	dump_prb_reg("enable", U3D_SSUSB_PRB_CTRL0),
 	dump_prb_reg("byte-sell", U3D_SSUSB_PRB_CTRL1),
 	dump_prb_reg("byte-selh", U3D_SSUSB_PRB_CTRL2),
@@ -349,7 +349,7 @@  static const struct file_operations mtu3_probe_fops = {
 static void mtu3_debugfs_create_prb_files(struct mtu3 *mtu)
 {
 	struct ssusb_mtk *ssusb = mtu->ssusb;
-	struct debugfs_reg32 *regs;
+	const struct debugfs_reg32 *regs;
 	struct dentry *dir_prb;
 	int i;