From b4661739c67acd15a02f8e112f8cc52d24b609ed Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Wed, 14 Jan 2009 06:43:56 +0000 Subject: [PATCH] bnx2x: Potential race after iSCSI boot The lock was release too soon. Make sure the HW is marked as locked until the boot driver was unloaded from FW perspective Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/bnx2x_main.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index 9110675..70fc610 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -6874,10 +6874,6 @@ static void __devinit bnx2x_undi_unload(struct bnx2x *bp) */ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_UNDI); val = REG_RD(bp, DORQ_REG_NORM_CID_OFST); - if (val == 0x7) - REG_WR(bp, DORQ_REG_NORM_CID_OFST, 0); - bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI); - if (val == 0x7) { u32 reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS; /* save our func */ @@ -6885,6 +6881,9 @@ static void __devinit bnx2x_undi_unload(struct bnx2x *bp) u32 swap_en; u32 swap_val; + /* clear the UNDI indication */ + REG_WR(bp, DORQ_REG_NORM_CID_OFST, 0); + BNX2X_DEV_INFO("UNDI is active! reset device\n"); /* try unload UNDI on port 0 */ @@ -6910,6 +6909,9 @@ static void __devinit bnx2x_undi_unload(struct bnx2x *bp) bnx2x_fw_command(bp, reset_code); } + /* now it's safe to release the lock */ + bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI); + REG_WR(bp, (BP_PORT(bp) ? HC_REG_CONFIG_1 : HC_REG_CONFIG_0), 0x1000); @@ -6954,7 +6956,9 @@ static void __devinit bnx2x_undi_unload(struct bnx2x *bp) bp->fw_seq = (SHMEM_RD(bp, func_mb[bp->func].drv_mb_header) & DRV_MSG_SEQ_NUMBER_MASK); - } + + } else + bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI); } } -- 2.7.4