The driver may sleep in interrupt handling, and the function call path is:
qed_int_sp_dpc (tasklet_init indicates it handles interrupt)
qed_int_attentions
qed_mcp_handle_events
qed_mcp_handle_link_change
qed_link_update
qed_fill_link
qed_mcp_get_media_type
qed_ptt_acquire
usleep_range --> may sleep
To fix it, the "usleep_range" is replaced with "udelay".
Signed-off-by: Jia-Ju Bai <[email protected]>
---
drivers/net/ethernet/qlogic/qed/qed_hw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.c
b/drivers/net/ethernet/qlogic/qed/qed_hw.c
index a05feb3..3250cc4 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_hw.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_hw.c
@@ -131,7 +131,7 @@ struct qed_ptt *qed_ptt_acquire(struct qed_hwfn *p_hwfn)
}
spin_unlock_bh(&p_hwfn->p_ptt_pool->lock);
- usleep_range(1000, 2000);
+ udelay(1500);
}
DP_NOTICE(p_hwfn, "PTT acquire timeout - failed to allocate PTT\n");
--
1.7.9.5
