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Date: Tue, 9 Aug 2011 16:09:52 +0300 From: "Dmitry Kravkov" <dmitry@...adcom.com> To: davem@...emloft.net, netdev@...r.kernel.org cc: "Vladislav Zolotarov" <vladz@...adcom.com>, "Eilon Greenstein" <eilong@...adcom.com> Subject: [PATCH net 3/5] bnx2x: prevent race between undi_unload and load flows Signed-off-by: Dmitry Kravkov <dmitry@...adcom.com> Signed-off-by: Eilon Greenstein <eilong@...adcom.com> --- drivers/net/bnx2x/bnx2x_main.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c index 1507091..1f5467f 100644 --- a/drivers/net/bnx2x/bnx2x_main.c +++ b/drivers/net/bnx2x/bnx2x_main.c @@ -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)) { -- 1.7.2.2 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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