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[Qemu-block] [PATCH 3/3] ahci: don't schedule unnecessary BH
From: |
John Snow |
Subject: |
[Qemu-block] [PATCH 3/3] ahci: don't schedule unnecessary BH |
Date: |
Wed, 30 May 2018 20:43:23 -0400 |
The comment gives us a hint. *Maybe* we still have something to
process. Well, why not check?
Signed-off-by: John Snow <address@hidden>
---
hw/ide/ahci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index a9558e45e7..380366b038 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -1427,8 +1427,7 @@ static void ahci_cmd_done(IDEDMA *dma)
/* update d2h status */
ahci_write_fis_d2h(ad);
- if (!ad->check_bh) {
- /* maybe we still have something to process, check later */
+ if (ad->port_regs.cmd_issue && !ad->check_bh) {
ad->check_bh = qemu_bh_new(ahci_check_cmd_bh, ad);
qemu_bh_schedule(ad->check_bh);
}
--
2.14.3