From 10892847de816edf4f8f2151174dc557c4a3f63f Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 17 Feb 2020 16:59:54 -0800 Subject: usb-storage: Use const to reduce object data size Make structs const to reduce data size ~20KB. Change function arguments and prototypes as necessary to compile. $ size (x86-64 defconfig pre) text data bss dec hex filename 12281 10948 480 23709 5c9d ./drivers/usb/storage/usb.o 111 10528 8 10647 2997 ./drivers/usb/storage/usual-tables.o $ size (x86-64 defconfig post) text data bss dec hex filename 22809 420 480 23709 5c9d drivers/usb/storage/usb.o 10551 0 0 10551 2937 drivers/usb/storage/usual-tables.o Signed-off-by: Joe Perches Acked-by: Alan Stern Link: https://lore.kernel.org/r/cf13bd2d790ae3afbf5da55ea7bed12e00c5119d.camel@perches.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/usb.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/usb/storage/usb.h') diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h index 85052cd66839..5850d624cac7 100644 --- a/drivers/usb/storage/usb.h +++ b/drivers/usb/storage/usb.h @@ -93,7 +93,8 @@ struct us_data { struct mutex dev_mutex; /* protect pusb_dev */ struct usb_device *pusb_dev; /* this usb_device */ struct usb_interface *pusb_intf; /* this interface */ - struct us_unusual_dev *unusual_dev; /* device-filter entry */ + const struct us_unusual_dev *unusual_dev; + /* device-filter entry */ unsigned long fflags; /* fixed flags from filter */ unsigned long dflags; /* dynamic atomic bitflags */ unsigned int send_bulk_pipe; /* cached pipe values */ @@ -185,7 +186,7 @@ extern int usb_stor_post_reset(struct usb_interface *iface); extern int usb_stor_probe1(struct us_data **pus, struct usb_interface *intf, const struct usb_device_id *id, - struct us_unusual_dev *unusual_dev, + const struct us_unusual_dev *unusual_dev, struct scsi_host_template *sht); extern int usb_stor_probe2(struct us_data *us); extern void usb_stor_disconnect(struct usb_interface *intf); -- cgit v1.2.3