staging: wilc1000: wilc_spi_write_read: pass struct wilc

This patch adds new function parameter struct wilc and use it instead of
global variable wilc_dev, and pass wilc to the function as well.
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/linux_wlan_spi.c

@@ -154,9 +154,9 @@ int wilc_spi_read(struct wilc *wilc, u8 *rb, u32 rlen)
 	return ret;
 }
 
-int wilc_spi_write_read(u8 *wb, u8 *rb, u32 rlen)
+int wilc_spi_write_read(struct wilc *wilc, u8 *wb, u8 *rb, u32 rlen)
 {
-	struct spi_device *spi = to_spi_device(wilc_dev->dev);
+	struct spi_device *spi = to_spi_device(wilc->dev);
 	int ret;
 
 	if (rlen > 0) {

drivers/staging/wilc1000/linux_wlan_spi.h

@@ -7,5 +7,5 @@
 int wilc_spi_init(void);
 int wilc_spi_write(struct wilc *wilc, u8 *b, u32 len);
 int wilc_spi_read(struct wilc *wilc, u8 *rb, u32 rlen);
-int wilc_spi_write_read(u8 *wb, u8 *rb, u32 rlen);
+int wilc_spi_write_read(struct wilc *wilc, u8 *wb, u8 *rb, u32 rlen);
 #endif

drivers/staging/wilc1000/wilc_spi.c

@@ -250,7 +250,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz,
 	}
 	rix = len;
 
-	if (!wilc_spi_write_read(wb, rb, len2)) {
+	if (!wilc_spi_write_read(wilc, wb, rb, len2)) {
 		PRINT_ER("[wilc spi]: Failed cmd write, bus error...\n");
 		result = N_FAIL;
 		return result;