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xen/usb: Constify struct hc_driver

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'struct hc_driver' is not modified in this driver.

Constifying this structure moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  52065	  23176	    256	  75497	  126e9	drivers/usb/host/xen-hcd.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  52897	  22344	    256	  75497	  126e9	drivers/usb/host/xen-hcd.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/63241c9e857646d895ce615b998d41ee4829f9e3.1761475831.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christophe JAILLET 2025-10-26 11:51:04 +01:00 committed by Greg Kroah-Hartman
parent b9d87b41f9
commit abf640a243
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/host/xen-hcd.c
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@ -1388,7 +1388,7 @@ static int xenhcd_get_frame(struct usb_hcd *hcd)
return 0;
}
static struct hc_driver xenhcd_usb20_hc_driver = {
static const struct hc_driver xenhcd_usb20_hc_driver = {
.description = "xen-hcd",
.product_desc = "Xen USB2.0 Virtual Host Controller",
.hcd_priv_size = sizeof(struct xenhcd_info),
@ -1413,7 +1413,7 @@ static struct hc_driver xenhcd_usb20_hc_driver = {
#endif
};
static struct hc_driver xenhcd_usb11_hc_driver = {
static const struct hc_driver xenhcd_usb11_hc_driver = {
.description = "xen-hcd",
.product_desc = "Xen USB1.1 Virtual Host Controller",
.hcd_priv_size = sizeof(struct xenhcd_info),