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[Qemu-block] [PATCH 1/5] ide: Prohibit RESET on IDE drives
From: |
John Snow |
Subject: |
[Qemu-block] [PATCH 1/5] ide: Prohibit RESET on IDE drives |
Date: |
Mon, 18 Jan 2016 23:51:53 -0500 |
This command is meant for ATAPI devices only, prohibit acknowledging it with
a command aborted response when an IDE device is busy.
Signed-off-by: John Snow <address@hidden>
---
hw/ide/core.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/hw/ide/core.c b/hw/ide/core.c
index da3baab..ba33064 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1876,9 +1876,12 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
return;
}
- /* Only DEVICE RESET is allowed while BSY or/and DRQ are set */
- if ((s->status & (BUSY_STAT|DRQ_STAT)) && val != WIN_DEVICE_RESET)
- return;
+ /* Only RESET is allowed to an ATAPI device while BSY and/or DRQ are set.
*/
+ if (s->status & (BUSY_STAT|DRQ_STAT)) {
+ if (!(val == WIN_DEVICE_RESET) && (s->drive_kind == IDE_CD)) {
+ return;
+ }
+ }
if (!ide_cmd_permitted(s, val)) {
ide_abort_command(s);
--
2.4.3