[TG3]: Eliminate the TG3_FLAG_5701_REG_WRITE_BUG flag.

This patch removes the use of the TG3_FLAG_5701_REG_WRITE_BUG flag.
It's logic is only used to set a function pointer and thus the
logic can be collapsed and the flag removed.

[ Comment tidy by Christoph Hellwig. -DaveM ]

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>

2 files changed, 12 insertions, 13 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index ff157b704864..4154e1285d5a 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10673,17 +10673,6 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
         if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5700_BX)
                 tp->tg3_flags |= TG3_FLAG_TXD_MBOX_HWBUG;
 
-        /* Back to back register writes can cause problems on this chip,
-         * the workaround is to read back all reg writes except those to
-         * mailbox regs.  See tg3_write_indirect_reg32().
-         *
-         * PCI Express 5750_A0 rev chips need this workaround too.
-         */
-        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 ||
-            ((tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) &&
-             tp->pci_chip_rev_id == CHIPREV_ID_5750_A0))
-                tp->tg3_flags |= TG3_FLAG_5701_REG_WRITE_BUG;
-
         if ((pci_state_reg & PCISTATE_BUS_SPEED_HIGH) != 0)
                 tp->tg3_flags |= TG3_FLAG_PCI_HIGH_SPEED;
         if ((pci_state_reg & PCISTATE_BUS_32BIT) != 0)
@@ -10707,8 +10696,19 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
         /* Various workaround register access methods */
         if (tp->tg3_flags & TG3_FLAG_PCIX_TARGET_HWBUG)
                 tp->write32 = tg3_write_indirect_reg32;
-        else if (tp->tg3_flags & TG3_FLAG_5701_REG_WRITE_BUG)
+        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 ||
+                 ((tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) &&
+                  tp->pci_chip_rev_id == CHIPREV_ID_5750_A0)) {
+                /*
+                 * Back to back register writes can cause problems on these
+                 * chips, the workaround is to read back all reg writes
+                 * except those to mailbox regs.
+                 *
+                 * See tg3_write_indirect_reg32().
+                 */
                 tp->write32 = tg3_write_flush_reg32;
+        }
+
 
         if ((tp->tg3_flags & TG3_FLAG_TXD_MBOX_HWBUG) ||
             (tp->tg3_flags & TG3_FLAG_MBOX_WRITE_REORDER)) {
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index dd04a46c6f14..c52acb0a602b 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2199,7 +2199,6 @@ struct tg3 {
 #define TG3_FLAG_USE_LINKCHG_REG        0x00000008
 #define TG3_FLAG_USE_MI_INTERRUPT       0x00000010
 #define TG3_FLAG_ENABLE_ASF             0x00000020
-#define TG3_FLAG_5701_REG_WRITE_BUG     0x00000040
 #define TG3_FLAG_POLL_SERDES            0x00000080
 #define TG3_FLAG_MBOX_WRITE_REORDER     0x00000100
 #define TG3_FLAG_PCIX_TARGET_HWBUG      0x00000200