ide: Prohibit RESET on IDE drives
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 <jsnow@redhat.com> Reported-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1453225191-11871-2-git-send-email-jsnow@redhat.com
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@ -1877,9 +1877,13 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
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return;
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}
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/* Only DEVICE RESET is allowed while BSY or/and DRQ are set */
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if ((s->status & (BUSY_STAT|DRQ_STAT)) && val != WIN_DEVICE_RESET)
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return;
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/* Only RESET is allowed while BSY and/or DRQ are set,
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* and only to ATAPI devices. */
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if (s->status & (BUSY_STAT|DRQ_STAT)) {
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if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
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return;
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}
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}
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if (!ide_cmd_permitted(s, val)) {
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ide_abort_command(s);
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