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scsi_cd: reset io_scheduler and dma_resource on uninit.

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it seems possible that a file descriptor is still opened after the device
is uninited. at least handle properly the situation.
help with #15089

Change-Id: I76fb41a8439ab7350ce4d781511aceb6496847c3
Reviewed-on: https://review.haiku-os.org/c/1486
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
This commit is contained in:
Jérôme Duval 2019-05-27 15:50:56 +02:00 committed by waddlesplash
parent ff4af513e1
commit 061236d419
1 changed files with 8 additions and 0 deletions
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8
src/add-ons/kernel/drivers/disk/scsi/scsi_cd/scsi_cd.cpp
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@ -709,6 +709,8 @@ cd_uninit_device(void* _cookie)
delete info->io_scheduler;
delete info->dma_resource;
info->io_scheduler = NULL;
info->dma_resource = NULL;
}
@ -772,6 +774,9 @@ cd_read(void* cookie, off_t pos, void* buffer, size_t* _length)
if (status != B_OK)
return status;
if (handle->info->io_scheduler == NULL)
return B_DEV_NO_MEDIA;
status = handle->info->io_scheduler->ScheduleRequest(&request);
if (status != B_OK)
return status;
@ -800,6 +805,9 @@ cd_write(void* cookie, off_t pos, const void* buffer, size_t* _length)
if (status != B_OK)
return status;
if (handle->info->io_scheduler == NULL)
return B_DEV_NO_MEDIA;
status = handle->info->io_scheduler->ScheduleRequest(&request);
if (status != B_OK)
return status;