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bnx2x: prevent race between undi_unload and load flows 

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Kravkov 2011-08-09 03:09:52 +00:00 committed by David S. Miller
parent cdb9d6ae8d
commit 2031bd3a8a
1 changed files with 8 additions and 0 deletions
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8
drivers/net/bnx2x/bnx2x_main.c
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@ -5798,6 +5798,12 @@ static int bnx2x_init_hw_common(struct bnx2x *bp)
DP(BNX2X_MSG_MCP, "starting common init func %d\n", BP_ABS_FUNC(bp));
/*
* take the UNDI lock to protect undi_unload flow from accessing
* registers while we're resetting the chip
*/
bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
bnx2x_reset_common(bp);
REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, 0xffffffff);
@ -5808,6 +5814,8 @@ static int bnx2x_init_hw_common(struct bnx2x *bp)
}
REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_SET, val);
bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
bnx2x_init_block(bp, BLOCK_MISC, PHASE_COMMON);
if (!CHIP_IS_E1x(bp)) {