staging: fbtft: fixed format-string errors.

Added __printf attribute to declaration of fbtft_dbg_hex and fixed
mismatches between format-specifiers and arguments in several function
calls.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fb_agm1264k-fl.c

@@ -406,7 +406,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 static int write(struct fbtft_par *par, void *buf, size_t len)
 {
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	gpiod_set_value(par->RW, 0); /* set write mode */
 

drivers/staging/fbtft/fb_ra8875.c

@@ -24,7 +24,7 @@ static int write_spi(struct fbtft_par *par, void *buf, size_t len)
 	struct spi_message m;
 
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	if (!par->spi) {
 		dev_err(par->info->device,

drivers/staging/fbtft/fbtft-io.c

@@ -14,7 +14,7 @@ int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len)
 	struct spi_message m;
 
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	if (!par->spi) {
 		dev_err(par->info->device,
@@ -47,7 +47,7 @@ int fbtft_write_spi_emulate_9(struct fbtft_par *par, void *buf, size_t len)
 	u64 val, dc, tmp;
 
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	if (!par->extra) {
 		dev_err(par->info->device, "%s: error: par->extra is NULL\n",
@@ -109,7 +109,7 @@ int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len)
 		txbuf[0] = par->startbyte | 0x3;
 		t.tx_buf = txbuf;
 		fbtft_par_dbg_hex(DEBUG_READ, par, par->info->device, u8,
-				  txbuf, len, "%s(len=%d) txbuf => ",
+				  txbuf, len, "%s(len=%zu) txbuf => ",
 				  __func__, len);
 	}
 
@@ -117,7 +117,7 @@ int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len)
 	spi_message_add_tail(&t, &m);
 	ret = spi_sync(par->spi, &m);
 	fbtft_par_dbg_hex(DEBUG_READ, par, par->info->device, u8, buf, len,
-			  "%s(len=%d) buf <= ", __func__, len);
+			  "%s(len=%zu) buf <= ", __func__, len);
 
 	return ret;
 }
@@ -136,7 +136,7 @@ int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
 #endif
 
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	while (len--) {
 		data = *(u8 *)buf;
@@ -186,7 +186,7 @@ int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
 #endif
 
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	while (len) {
 		data = *(u16 *)buf;

drivers/staging/fbtft/fbtft.h

@@ -238,6 +238,7 @@ struct fbtft_par {
 
 /* fbtft-core.c */
 int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc);
+__printf(5, 6)
 void fbtft_dbg_hex(const struct device *dev, int groupsize,
 		   void *buf, size_t len, const char *fmt, ...);
 struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,

drivers/staging/fbtft/fbtft_device.c

@@ -965,7 +965,7 @@ static int write_gpio16_wr_slow(struct fbtft_par *par, void *buf, size_t len)
 #endif
 
 	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
-			  "%s(len=%d): ", __func__, len);
+			  "%s(len=%zu): ", __func__, len);
 
 	while (len) {
 		data = *(u16 *)buf;