Staging: et131x: Another typedef solely used to write 0 to a register

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/et131x/et1310_address_map.h

@@ -803,21 +803,11 @@ typedef union _TXMAC_ERR_INT_t {
 /*
  * structure for error interrupt reg in txmac address map
  * located at address 0x3020
+ *
+ * 31-2: unused
+ * 1: bp_req
+ * 0: bp_xonxoff
  */
-typedef union _TXMAC_CP_CTRL_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:30;		/* bits 2-31 */
-		u32 bp_req:1;		/* bit 1 */
-		u32 bp_xonxoff:1;	/* bit 0 */
-#else
-		u32 bp_xonxoff:1;	/* bit 0 */
-		u32 bp_req:1;		/* bit 1 */
-		u32 unused:30;		/* bits 2-31 */
-#endif
-	} bits;
-} TXMAC_BP_CTRL_t, *PTXMAC_BP_CTRL_t;
 
 /*
  * Tx MAC Module of JAGCore Address Mapping
@@ -831,7 +821,7 @@ typedef struct _TXMAC_t {		/* Location: */
 	u32 tx_test;			/*  0x3014 */
 	TXMAC_ERR_t err;		/*  0x3018 */
 	TXMAC_ERR_INT_t err_int;	/*  0x301C */
-	TXMAC_BP_CTRL_t bp_ctrl;	/*  0x3020 */
+	u32 bp_ctrl;			/*  0x3020 */
 } TXMAC_t, *PTXMAC_t;
 
 /* END OF TXMAC REGISTER ADDRESS MAP */

drivers/staging/et131x/et131x_isr.c

@@ -287,17 +287,12 @@ void et131x_isr_handler(struct work_struct *work)
 				u32 pm_csr;
 
 				/* Tell the device to send a pause packet via
-				 * the back pressure register
+				 * the back pressure register (bp req  and
+				 * bp xon/xoff)
 				 */
 				pm_csr = readl(&iomem->global.pm_csr);
-				if ((pm_csr & ET_PM_PHY_SW_COMA) == 0) {
-					TXMAC_BP_CTRL_t bp_ctrl = { 0 };
-
-					bp_ctrl.bits.bp_req = 1;
-					bp_ctrl.bits.bp_xonxoff = 1;
-					writel(bp_ctrl.value,
-					       &iomem->txmac.bp_ctrl.value);
-				}
+				if ((pm_csr & ET_PM_PHY_SW_COMA) == 0)
+					writel(3, &iomem->txmac.bp_ctrl);
 			}
 		}