Stefan Haberland 08bccd7212 s390/dasd: fix hanging IO request during DASD driver unbind ... commit 66f669a272898feb1c69b770e1504aa2ec7723d1 upstream. Prevent that an IO request is build during device shutdown initiated by a driver unbind. This request will never be able to be processed or canceled and will hang forever. This will lead also to a hanging unbind. Fix by checking not only if the device is in READY state but also check that there is no device offline initiated before building a new IO request. Fixes: e443343e50 ("s390/dasd: blk-mq conversion") Cc: <stable@vger.kernel.org> # v4.14+ Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Tested-by: Bjoern Walk <bwalk@linux.ibm.com> Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-17 17:06:28 +01:00
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dasd_3990_erp.c
dasd_alias.c
dasd_devmap.c
dasd_diag.c
dasd_diag.h
dasd_eckd.c
dasd_eckd.h
dasd_eer.c
dasd_erp.c
dasd_fba.c
dasd_fba.h
dasd_genhd.c
dasd_int.h
dasd_ioctl.c
dasd_proc.c
dasd.c
dcssblk.c
Kconfig
Makefile
scm_blk.c
scm_blk.h
scm_drv.c
xpram.c