usb: storage: sddr09: Use const for constant arrays

The nand_flash_ids, inquiry_response, and mode_page_01 arrays are only
read, not modified.

Declaring data as const makes it easier to see what's going on, and can
prevent unintended writes through placement in a read-only section.

Signed-off-by: Jonathan Neuschäfer <[email protected]>
Reviewed-by: Alan Stern <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: neuschaefer

drivers/usb/storage/sddr09.c

@@ -144,7 +144,7 @@ static inline char *nand_flash_manufacturer(int manuf_id) {
  * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda.
  */
 
-static struct nand_flash_dev nand_flash_ids[] = {
+static const struct nand_flash_dev nand_flash_ids[] = {
 	/* NAND flash */
 	{ 0x6e, 20, 8, 4, 8, 2},	/* 1 MB */
 	{ 0xe8, 20, 8, 4, 8, 2},	/* 1 MB */
@@ -169,7 +169,7 @@ static struct nand_flash_dev nand_flash_ids[] = {
 	{ 0,}
 };
 
-static struct nand_flash_dev *
+static const struct nand_flash_dev *
 nand_find_id(unsigned char id) {
 	int i;
 
@@ -1133,9 +1133,9 @@ sddr09_reset(struct us_data *us) {
 }
 #endif
 
-static struct nand_flash_dev *
+static const struct nand_flash_dev *
 sddr09_get_cardinfo(struct us_data *us, unsigned char flags) {
-	struct nand_flash_dev *cardinfo;
+	const struct nand_flash_dev *cardinfo;
 	unsigned char deviceID[4];
 	char blurbtxt[256];
 	int result;
@@ -1545,12 +1545,12 @@ static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us)
 
 	struct sddr09_card_info *info;
 
-	static unsigned char inquiry_response[8] = {
+	static const unsigned char inquiry_response[8] = {
 		0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
 	};
 
 	/* note: no block descriptor support */
-	static unsigned char mode_page_01[19] = {
+	static const unsigned char mode_page_01[19] = {
 		0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00,
 		0x01, 0x0A,
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
@@ -1584,7 +1584,7 @@ static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us)
 	}
 
 	if (srb->cmnd[0] == READ_CAPACITY) {
-		struct nand_flash_dev *cardinfo;
+		const struct nand_flash_dev *cardinfo;
 
 		sddr09_get_wp(us, info);	/* read WP bit */