This patch handles blk_register_region() return value. Earlier blk_register_region() function doesn't handle error cases, now it is added, so the callers of this function should also handle it. Verfied on X86 based ubuntu machine. This patch depends on [PATCH 1/8] block/genhd.c: Add error handling Signed-off-by: Vishnu Pratap Singh <vishnu.ps@xxxxxxxxxxx> --- drivers/block/floppy.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 331363e..50802a6 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -4219,8 +4219,10 @@ static int __init do_floppy_init(void) if (err) goto out_unreg_blkdev; - blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE, + err = blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE, floppy_find, NULL, NULL); + if (err) + goto out_unreg_region; for (i = 0; i < 256; i++) if (ITYPE(i)) @@ -4250,7 +4252,7 @@ static int __init do_floppy_init(void) if (fdc_state[0].address == -1) { cancel_delayed_work(&fd_timeout); err = -ENODEV; - goto out_unreg_region; + goto out_fdc_err; } #if N_FDC > 1 fdc_state[1].address = FDC2; @@ -4261,7 +4263,7 @@ static int __init do_floppy_init(void) if (err) { cancel_delayed_work(&fd_timeout); err = -EBUSY; - goto out_unreg_region; + goto out_fdc_err; } /* initialise drive state */ @@ -4357,8 +4359,9 @@ out_remove_drives: out_release_dma: if (atomic_read(&usage_count)) floppy_release_irq_and_dma(); -out_unreg_region: +out_fdc_err: blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256); +out_unreg_region: platform_driver_unregister(&floppy_driver); out_unreg_blkdev: unregister_blkdev(FLOPPY_MAJOR, "fd"); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html