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scsi: megaraid_sas: Convert union megasas_sgl to flex-arrays

In the ongoing effort to replace all fake flexible arrays with true
flexible arrays, replace the sge32, sge64, and sge_skinny members of union
megasas_sgl with true flexible arrays. No binary differences are seen after
this change; sizes were already being manually calculated using the member
struct sizes directly.

Cc: Kashyap Desai <kashyap.desai@broadcom.com>
Cc: Sumit Saxena <sumit.saxena@broadcom.com>
Cc: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: megaraidlinux.pdl@broadcom.com
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230511220957.never.919-kees@kernel.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

authored by

Kees Cook and committed by
Martin K. Petersen aa673800 7e79881d

+3 -5
+3 -5
drivers/scsi/megaraid/megaraid_sas.h
··· 1722 1722 } __packed; 1723 1723 1724 1724 union megasas_sgl { 1725 - 1726 - struct megasas_sge32 sge32[1]; 1727 - struct megasas_sge64 sge64[1]; 1728 - struct megasas_sge_skinny sge_skinny[1]; 1729 - 1725 + DECLARE_FLEX_ARRAY(struct megasas_sge32, sge32); 1726 + DECLARE_FLEX_ARRAY(struct megasas_sge64, sge64); 1727 + DECLARE_FLEX_ARRAY(struct megasas_sge_skinny, sge_skinny); 1730 1728 } __attribute__ ((packed)); 1731 1729 1732 1730 struct megasas_header {