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bnxt_en: Wait longer for the firmware message response to complete. 

The code waits up to 20 usec for the firmware response to complete
once we've seen the valid response header in the buffer.  It turns
out that in some scenarios, this wait time is not long enough.
Extend it to 150 usec and use usleep_range() instead of udelay().

Fixes: 9751e8e714 ("bnxt_en: reduce timeout on initial HWRM calls")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2019-02-20 19:07:32 -05:00 committed by David S. Miller
parent 67681d02aa
commit 0000b81a06
2 changed files with 2 additions and 2 deletions
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2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -3926,7 +3926,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
dma_rmb();
if (*valid)
break;
udelay(1);
usleep_range(1, 5);
}
if (j >= HWRM_VALID_BIT_DELAY_USEC) {

2
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -582,7 +582,7 @@ struct nqe_cn {
(HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT + \
((n) - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT))
#define HWRM_VALID_BIT_DELAY_USEC 20
#define HWRM_VALID_BIT_DELAY_USEC 150
#define BNXT_HWRM_CHNL_CHIMP 0
#define BNXT_HWRM_CHNL_KONG 1