lpfc: problems with -Werror

[Fengguang Wu <fengguang.wu@xxxxxxxxx>]

Hi Alex,

In commit d438bd3aef ("Add -Werror compilation flag") you added this:

+ccflags-y += -Werror

Now I run into a number of gcc errors when running randconfig tests.
They smell like false warnings. I don't quite understand why you made
that "-Werror" conditional and only fail on CONFIG_SCSI_LPFC=y.  But
if you prefer to keep that -Werror, I'll send a (perhaps silly) patch
to quiet these error messages.

drivers/scsi/lpfc/lpfc_sli.c:3654:3: error: 'resp_data' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:3637:2: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
arch/x86/include/asm/io.h:63:1: error: 'hc_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:3510:18: error: 'status' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:4068:17: error: 'status' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:3777:23: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:3742:9: error: 'status' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:6694:21: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:6693:18: error: 'word0' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:9718:12: error: 'creg_val' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:9872:2: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:10235:14: error: 'control' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:10176:9: error: 'hc_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:10152:12: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:10447:9: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_sli.c:10551:8: error: 'hc_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_els.c:95:2: error: 'ha_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_els.c:4731:11: error: 'cmd' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_els.c:4731:11: error: 'length' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_init.c:522:9: error: 'status' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_attr.c:1491:12: error: 'creg_val' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_bsg.c:358:12: error: 'creg_val' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_bsg.c:615:12: error: 'creg_val' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/lpfc/lpfc_bsg.c:1385:12: error: 'creg_val' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Thanks,
Fengguang
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