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[PULL,8/9] ide: clear interrupt on command write

Message ID 20201001174649.1911016-9-jsnow@redhat.com
State New
Headers show
Series [PULL,1/9] MAINTAINERS: Update my git address | expand

Commit Message

John Snow Oct. 1, 2020, 5:46 p.m. UTC 
Not known to fix any bug, but I couldn't help but notice that ATA
specifies that writing to this register should clear an interrupt.

ATA7: Section 5.3.3 (Command register - Effect)
ATA6: Section 7.4.4 (Command register - Effect)
ATA5: Section 7.4.4 (Command register - Effect)
ATA4: Section 7.4.4 (Command register - Effect)
ATA3: Section 5.2.2 (Command register)

Other editions: try searching for the phrase "Writing this register".

Signed-off-by: John Snow <jsnow@redhat.com>
---
 hw/ide/core.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/hw/ide/core.c b/hw/ide/core.c
index 8a55352e4b2..0d745d63a18 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1312,6 +1312,7 @@  void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
     default:
     case ATA_IOPORT_WR_COMMAND:
         ide_clear_hob(bus);
+        qemu_irq_lower(bus->irq);
         ide_exec_cmd(bus, val);
         break;
     }